./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/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_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/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_902945d9-bbb6-403c-82bf-909e1ee0bf7d/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 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 18:07:10,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:07:10,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:07:10,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:07:10,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:07:10,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:07:10,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:07:10,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:07:10,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:07:10,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:07:10,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:07:10,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:07:10,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:07:10,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:07:10,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:07:10,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:07:10,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:07:10,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:07:10,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:07:10,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:07:10,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:07:10,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:07:10,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:07:10,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:07:10,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:07:10,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:07:10,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:07:10,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:07:10,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:07:10,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:07:10,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:07:10,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:07:10,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:07:10,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:07:10,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:07:10,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:07:10,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:07:10,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:07:10,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:07:10,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:07:10,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:07:10,328 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:07:10,346 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:07:10,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:07:10,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:07:10,347 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:07:10,347 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:07:10,348 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:07:10,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:07:10,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:07:10,348 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:07:10,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:07:10,349 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:07:10,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:07:10,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:07:10,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:07:10,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:07:10,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:07:10,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:07:10,350 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:07:10,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:07:10,350 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:07:10,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:07:10,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:07:10,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:07:10,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:07:10,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:07:10,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:07:10,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:07:10,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:07:10,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:07:10,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:07:10,352 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:07:10,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:07:10,352 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:07:10,352 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:07:10,352 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:07:10,352 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_902945d9-bbb6-403c-82bf-909e1ee0bf7d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 [2022-12-13 18:07:10,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:07:10,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:07:10,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:07:10,570 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:07:10,570 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:07:10,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/triangular-longer-1.i [2022-12-13 18:07:13,234 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:07:13,421 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:07:13,421 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/sv-benchmarks/c/pthread/triangular-longer-1.i [2022-12-13 18:07:13,431 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/data/f9548df64/f7028079105342ff8cf2ad937be7cb57/FLAGe07bd0789 [2022-12-13 18:07:13,444 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/data/f9548df64/f7028079105342ff8cf2ad937be7cb57 [2022-12-13 18:07:13,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:07:13,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:07:13,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:07:13,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:07:13,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:07:13,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:07:13" (1/1) ... [2022-12-13 18:07:13,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d0896e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:13, skipping insertion in model container [2022-12-13 18:07:13,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:07:13" (1/1) ... [2022-12-13 18:07:13,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:07:13,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:07:13,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:07:13,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:07:13,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:07:13,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:07:13,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:07:13,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:07:13,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:07:13,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:07:13,722 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_902945d9-bbb6-403c-82bf-909e1ee0bf7d/sv-benchmarks/c/pthread/triangular-longer-1.i[30961,30974] [2022-12-13 18:07:13,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:07:13,732 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:07:13,753 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:07:13,753 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:07:13,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:07:13,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:07:13,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:07:13,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:07:13,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:07:13,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:07:13,757 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_902945d9-bbb6-403c-82bf-909e1ee0bf7d/sv-benchmarks/c/pthread/triangular-longer-1.i[30961,30974] [2022-12-13 18:07:13,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:07:13,776 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:07:13,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:13 WrapperNode [2022-12-13 18:07:13,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:07:13,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:07:13,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:07:13,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:07:13,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:13" (1/1) ... [2022-12-13 18:07:13,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:13" (1/1) ... [2022-12-13 18:07:13,803 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-12-13 18:07:13,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:07:13,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:07:13,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:07:13,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:07:13,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:13" (1/1) ... [2022-12-13 18:07:13,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:13" (1/1) ... [2022-12-13 18:07:13,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:13" (1/1) ... [2022-12-13 18:07:13,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:13" (1/1) ... [2022-12-13 18:07:13,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:13" (1/1) ... [2022-12-13 18:07:13,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:13" (1/1) ... [2022-12-13 18:07:13,818 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:13" (1/1) ... [2022-12-13 18:07:13,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:13" (1/1) ... [2022-12-13 18:07:13,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:07:13,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:07:13,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:07:13,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:07:13,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:13" (1/1) ... [2022-12-13 18:07:13,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:07:13,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:07:13,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:07:13,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:07:13,872 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 18:07:13,872 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 18:07:13,872 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 18:07:13,872 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 18:07:13,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:07:13,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 18:07:13,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:07:13,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:07:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:07:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:07:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 18:07:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:07:13,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:07:13,874 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 18:07:13,970 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:07:13,972 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:07:14,073 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:07:14,078 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:07:14,078 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 18:07:14,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:07:14 BoogieIcfgContainer [2022-12-13 18:07:14,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:07:14,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:07:14,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:07:14,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:07:14,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:07:13" (1/3) ... [2022-12-13 18:07:14,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c192854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:07:14, skipping insertion in model container [2022-12-13 18:07:14,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:07:13" (2/3) ... [2022-12-13 18:07:14,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c192854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:07:14, skipping insertion in model container [2022-12-13 18:07:14,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:07:14" (3/3) ... [2022-12-13 18:07:14,086 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2022-12-13 18:07:14,092 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:07:14,100 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:07:14,100 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 18:07:14,100 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:07:14,141 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 18:07:14,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 70 transitions, 150 flow [2022-12-13 18:07:14,203 INFO L130 PetriNetUnfolder]: 5/68 cut-off events. [2022-12-13 18:07:14,204 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:07:14,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 68 events. 5/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-12-13 18:07:14,209 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 70 transitions, 150 flow [2022-12-13 18:07:14,213 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 68 transitions, 142 flow [2022-12-13 18:07:14,216 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:07:14,223 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 68 transitions, 142 flow [2022-12-13 18:07:14,225 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 68 transitions, 142 flow [2022-12-13 18:07:14,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 68 transitions, 142 flow [2022-12-13 18:07:14,239 INFO L130 PetriNetUnfolder]: 5/68 cut-off events. [2022-12-13 18:07:14,239 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:07:14,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 68 events. 5/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-12-13 18:07:14,240 INFO L119 LiptonReduction]: Number of co-enabled transitions 1122 [2022-12-13 18:07:15,849 INFO L134 LiptonReduction]: Checked pairs total: 1071 [2022-12-13 18:07:15,849 INFO L136 LiptonReduction]: Total number of compositions: 62 [2022-12-13 18:07:15,861 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:07:15,865 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;@4dbc3d3a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:07:15,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 18:07:15,868 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2022-12-13 18:07:15,868 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:07:15,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:15,869 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 18:07:15,869 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 18:07:15,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:15,872 INFO L85 PathProgramCache]: Analyzing trace with hash -453767177, now seen corresponding path program 1 times [2022-12-13 18:07:15,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:15,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562429537] [2022-12-13 18:07:15,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:15,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:16,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:16,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:16,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562429537] [2022-12-13 18:07:16,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562429537] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:16,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:16,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:07:16,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081883586] [2022-12-13 18:07:16,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:16,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:07:16,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:16,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:07:16,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:07:16,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 132 [2022-12-13 18:07:16,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:16,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 132 [2022-12-13 18:07:16,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:16,252 INFO L130 PetriNetUnfolder]: 94/152 cut-off events. [2022-12-13 18:07:16,252 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 18:07:16,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 381 event pairs, 11 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2022-12-13 18:07:16,255 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2022-12-13 18:07:16,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2022-12-13 18:07:16,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:07:16,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:07:16,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 261 transitions. [2022-12-13 18:07:16,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4943181818181818 [2022-12-13 18:07:16,269 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 261 transitions. [2022-12-13 18:07:16,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 261 transitions. [2022-12-13 18:07:16,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:16,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 261 transitions. [2022-12-13 18:07:16,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,280 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,282 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 4 states and 261 transitions. [2022-12-13 18:07:16,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2022-12-13 18:07:16,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:07:16,285 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2022-12-13 18:07:16,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2022-12-13 18:07:16,289 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2022-12-13 18:07:16,289 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2022-12-13 18:07:16,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:16,290 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:16,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:07:16,290 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 18:07:16,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:16,291 INFO L85 PathProgramCache]: Analyzing trace with hash 2016076337, now seen corresponding path program 1 times [2022-12-13 18:07:16,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:16,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866266496] [2022-12-13 18:07:16,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:16,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:16,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:16,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:16,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866266496] [2022-12-13 18:07:16,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866266496] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:16,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:16,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:07:16,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181640796] [2022-12-13 18:07:16,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:16,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:07:16,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:16,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:07:16,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:07:16,411 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 18:07:16,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:16,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 18:07:16,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:16,483 INFO L130 PetriNetUnfolder]: 126/217 cut-off events. [2022-12-13 18:07:16,483 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-12-13 18:07:16,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 217 events. 126/217 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 660 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 535. Up to 89 conditions per place. [2022-12-13 18:07:16,485 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2022-12-13 18:07:16,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2022-12-13 18:07:16,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:07:16,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:07:16,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 380 transitions. [2022-12-13 18:07:16,487 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2022-12-13 18:07:16,487 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 380 transitions. [2022-12-13 18:07:16,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 380 transitions. [2022-12-13 18:07:16,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:16,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 380 transitions. [2022-12-13 18:07:16,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 132.0) internal successors, (924), 7 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,490 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 132.0) internal successors, (924), 7 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,490 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 380 transitions. [2022-12-13 18:07:16,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2022-12-13 18:07:16,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:07:16,491 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2022-12-13 18:07:16,491 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2022-12-13 18:07:16,492 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2022-12-13 18:07:16,492 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2022-12-13 18:07:16,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:16,492 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:16,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:07:16,492 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 18:07:16,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:16,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2016092147, now seen corresponding path program 2 times [2022-12-13 18:07:16,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:16,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168526656] [2022-12-13 18:07:16,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:16,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:16,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:16,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168526656] [2022-12-13 18:07:16,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168526656] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:16,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:16,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:07:16,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520763733] [2022-12-13 18:07:16,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:16,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:07:16,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:16,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:07:16,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:07:16,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 18:07:16,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:16,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 18:07:16,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:16,668 INFO L130 PetriNetUnfolder]: 114/199 cut-off events. [2022-12-13 18:07:16,668 INFO L131 PetriNetUnfolder]: For 280/280 co-relation queries the response was YES. [2022-12-13 18:07:16,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 199 events. 114/199 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 632 event pairs, 19 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 636. Up to 84 conditions per place. [2022-12-13 18:07:16,671 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 29 selfloop transitions, 9 changer transitions 4/42 dead transitions. [2022-12-13 18:07:16,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 284 flow [2022-12-13 18:07:16,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:07:16,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:07:16,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 318 transitions. [2022-12-13 18:07:16,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2022-12-13 18:07:16,673 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 318 transitions. [2022-12-13 18:07:16,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 318 transitions. [2022-12-13 18:07:16,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:16,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 318 transitions. [2022-12-13 18:07:16,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,677 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,677 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 5 states and 318 transitions. [2022-12-13 18:07:16,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 284 flow [2022-12-13 18:07:16,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 18:07:16,681 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 182 flow [2022-12-13 18:07:16,681 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2022-12-13 18:07:16,682 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 17 predicate places. [2022-12-13 18:07:16,682 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 182 flow [2022-12-13 18:07:16,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,683 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:16,683 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:16,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:07:16,683 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 18:07:16,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:16,684 INFO L85 PathProgramCache]: Analyzing trace with hash -224442932, now seen corresponding path program 1 times [2022-12-13 18:07:16,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:16,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701860423] [2022-12-13 18:07:16,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:16,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:16,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:16,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701860423] [2022-12-13 18:07:16,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701860423] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:16,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:16,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:07:16,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212906015] [2022-12-13 18:07:16,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:16,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:07:16,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:16,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:07:16,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:07:16,806 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 18:07:16,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:16,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 18:07:16,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:16,954 INFO L130 PetriNetUnfolder]: 126/219 cut-off events. [2022-12-13 18:07:16,954 INFO L131 PetriNetUnfolder]: For 533/533 co-relation queries the response was YES. [2022-12-13 18:07:16,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 219 events. 126/219 cut-off events. For 533/533 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 711 event pairs, 19 based on Foata normal form. 4/223 useless extension candidates. Maximal degree in co-relation 772. Up to 86 conditions per place. [2022-12-13 18:07:16,956 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 32 selfloop transitions, 16 changer transitions 11/59 dead transitions. [2022-12-13 18:07:16,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 59 transitions, 425 flow [2022-12-13 18:07:16,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:07:16,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 18:07:16,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 565 transitions. [2022-12-13 18:07:16,959 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47558922558922556 [2022-12-13 18:07:16,959 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 565 transitions. [2022-12-13 18:07:16,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 565 transitions. [2022-12-13 18:07:16,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:16,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 565 transitions. [2022-12-13 18:07:16,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.77777777777778) internal successors, (565), 9 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,964 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,964 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 182 flow. Second operand 9 states and 565 transitions. [2022-12-13 18:07:16,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 59 transitions, 425 flow [2022-12-13 18:07:16,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 59 transitions, 388 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-12-13 18:07:16,968 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 251 flow [2022-12-13 18:07:16,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=251, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2022-12-13 18:07:16,969 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 24 predicate places. [2022-12-13 18:07:16,969 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 251 flow [2022-12-13 18:07:16,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:16,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:16,970 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:16,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:07:16,970 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 18:07:16,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:16,971 INFO L85 PathProgramCache]: Analyzing trace with hash -224372252, now seen corresponding path program 2 times [2022-12-13 18:07:16,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:16,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809630565] [2022-12-13 18:07:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:16,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:17,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:17,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:17,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809630565] [2022-12-13 18:07:17,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809630565] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:17,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:17,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:07:17,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830428384] [2022-12-13 18:07:17,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:17,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:07:17,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:17,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:07:17,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:07:17,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 18:07:17,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:17,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 18:07:17,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:17,181 INFO L130 PetriNetUnfolder]: 162/283 cut-off events. [2022-12-13 18:07:17,181 INFO L131 PetriNetUnfolder]: For 793/793 co-relation queries the response was YES. [2022-12-13 18:07:17,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 283 events. 162/283 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 953 event pairs, 22 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1066. Up to 77 conditions per place. [2022-12-13 18:07:17,183 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 38 selfloop transitions, 20 changer transitions 3/61 dead transitions. [2022-12-13 18:07:17,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 497 flow [2022-12-13 18:07:17,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:07:17,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 18:07:17,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 502 transitions. [2022-12-13 18:07:17,184 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4753787878787879 [2022-12-13 18:07:17,184 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 502 transitions. [2022-12-13 18:07:17,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 502 transitions. [2022-12-13 18:07:17,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:17,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 502 transitions. [2022-12-13 18:07:17,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 62.75) internal successors, (502), 8 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,187 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,187 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 251 flow. Second operand 8 states and 502 transitions. [2022-12-13 18:07:17,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 497 flow [2022-12-13 18:07:17,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 467 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-12-13 18:07:17,190 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 344 flow [2022-12-13 18:07:17,190 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=344, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2022-12-13 18:07:17,191 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 33 predicate places. [2022-12-13 18:07:17,191 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 344 flow [2022-12-13 18:07:17,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,191 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:17,191 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:17,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:07:17,192 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 18:07:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:17,192 INFO L85 PathProgramCache]: Analyzing trace with hash -196650812, now seen corresponding path program 3 times [2022-12-13 18:07:17,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:17,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076947441] [2022-12-13 18:07:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:17,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:17,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:17,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076947441] [2022-12-13 18:07:17,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076947441] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:17,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:17,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:07:17,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000445672] [2022-12-13 18:07:17,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:17,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:07:17,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:17,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:07:17,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:07:17,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 18:07:17,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:17,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 18:07:17,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:17,392 INFO L130 PetriNetUnfolder]: 150/263 cut-off events. [2022-12-13 18:07:17,392 INFO L131 PetriNetUnfolder]: For 1223/1223 co-relation queries the response was YES. [2022-12-13 18:07:17,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 263 events. 150/263 cut-off events. For 1223/1223 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 892 event pairs, 22 based on Foata normal form. 8/271 useless extension candidates. Maximal degree in co-relation 1163. Up to 65 conditions per place. [2022-12-13 18:07:17,395 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 30 selfloop transitions, 20 changer transitions 8/58 dead transitions. [2022-12-13 18:07:17,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 566 flow [2022-12-13 18:07:17,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:07:17,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:07:17,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 439 transitions. [2022-12-13 18:07:17,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4751082251082251 [2022-12-13 18:07:17,396 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 439 transitions. [2022-12-13 18:07:17,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 439 transitions. [2022-12-13 18:07:17,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:17,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 439 transitions. [2022-12-13 18:07:17,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 62.714285714285715) internal successors, (439), 7 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,398 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,398 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 344 flow. Second operand 7 states and 439 transitions. [2022-12-13 18:07:17,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 566 flow [2022-12-13 18:07:17,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 531 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-12-13 18:07:17,402 INFO L231 Difference]: Finished difference. Result has 56 places, 39 transitions, 388 flow [2022-12-13 18:07:17,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=388, PETRI_PLACES=56, PETRI_TRANSITIONS=39} [2022-12-13 18:07:17,403 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 38 predicate places. [2022-12-13 18:07:17,403 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 388 flow [2022-12-13 18:07:17,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:17,403 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:17,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:07:17,403 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 18:07:17,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:17,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1801188768, now seen corresponding path program 4 times [2022-12-13 18:07:17,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:17,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003877651] [2022-12-13 18:07:17,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:17,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:17,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:17,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:17,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003877651] [2022-12-13 18:07:17,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003877651] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:07:17,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194456764] [2022-12-13 18:07:17,479 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 18:07:17,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:17,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:07:17,480 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:07:17,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:07:17,537 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 18:07:17,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:07:17,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 18:07:17,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:07:17,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:17,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:07:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:17,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194456764] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:07:17,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:07:17,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-13 18:07:17,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874117271] [2022-12-13 18:07:17,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:07:17,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 18:07:17,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:17,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 18:07:17,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:07:17,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 18:07:17,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 39 transitions, 388 flow. Second operand has 13 states, 13 states have (on average 58.84615384615385) internal successors, (765), 13 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:17,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 18:07:17,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:17,951 INFO L130 PetriNetUnfolder]: 198/343 cut-off events. [2022-12-13 18:07:17,951 INFO L131 PetriNetUnfolder]: For 2136/2136 co-relation queries the response was YES. [2022-12-13 18:07:17,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 343 events. 198/343 cut-off events. For 2136/2136 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1163 event pairs, 18 based on Foata normal form. 16/359 useless extension candidates. Maximal degree in co-relation 1628. Up to 87 conditions per place. [2022-12-13 18:07:17,953 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 34 selfloop transitions, 35 changer transitions 22/91 dead transitions. [2022-12-13 18:07:17,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 91 transitions, 946 flow [2022-12-13 18:07:17,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:07:17,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 18:07:17,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 872 transitions. [2022-12-13 18:07:17,955 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47186147186147187 [2022-12-13 18:07:17,955 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 872 transitions. [2022-12-13 18:07:17,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 872 transitions. [2022-12-13 18:07:17,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:17,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 872 transitions. [2022-12-13 18:07:17,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 62.285714285714285) internal successors, (872), 14 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 132.0) internal successors, (1980), 15 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,958 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 132.0) internal successors, (1980), 15 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,958 INFO L175 Difference]: Start difference. First operand has 56 places, 39 transitions, 388 flow. Second operand 14 states and 872 transitions. [2022-12-13 18:07:17,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 91 transitions, 946 flow [2022-12-13 18:07:17,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 884 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-12-13 18:07:17,963 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 689 flow [2022-12-13 18:07:17,964 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=689, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2022-12-13 18:07:17,964 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 51 predicate places. [2022-12-13 18:07:17,964 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 689 flow [2022-12-13 18:07:17,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 58.84615384615385) internal successors, (765), 13 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:17,964 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:17,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:07:18,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 18:07:18,165 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 18:07:18,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:18,166 INFO L85 PathProgramCache]: Analyzing trace with hash 15514281, now seen corresponding path program 5 times [2022-12-13 18:07:18,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:18,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976744869] [2022-12-13 18:07:18,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:18,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:18,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:18,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976744869] [2022-12-13 18:07:18,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976744869] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:07:18,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048652260] [2022-12-13 18:07:18,303 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 18:07:18,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:18,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:07:18,304 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:07:18,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:07:18,355 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 18:07:18,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:07:18,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 18:07:18,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:07:18,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:18,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:07:18,523 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:18,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048652260] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:07:18,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:07:18,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-13 18:07:18,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430081826] [2022-12-13 18:07:18,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:07:18,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 18:07:18,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:18,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 18:07:18,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:07:18,561 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 18:07:18,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 689 flow. Second operand has 16 states, 16 states have (on average 58.8125) internal successors, (941), 16 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:18,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:18,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 18:07:18,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:18,814 INFO L130 PetriNetUnfolder]: 254/455 cut-off events. [2022-12-13 18:07:18,814 INFO L131 PetriNetUnfolder]: For 4621/4621 co-relation queries the response was YES. [2022-12-13 18:07:18,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 455 events. 254/455 cut-off events. For 4621/4621 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1599 event pairs, 55 based on Foata normal form. 32/487 useless extension candidates. Maximal degree in co-relation 2400. Up to 249 conditions per place. [2022-12-13 18:07:18,818 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 65 selfloop transitions, 25 changer transitions 27/117 dead transitions. [2022-12-13 18:07:18,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 1455 flow [2022-12-13 18:07:18,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:07:18,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 18:07:18,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 995 transitions. [2022-12-13 18:07:18,820 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47111742424242425 [2022-12-13 18:07:18,820 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 995 transitions. [2022-12-13 18:07:18,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 995 transitions. [2022-12-13 18:07:18,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:18,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 995 transitions. [2022-12-13 18:07:18,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 62.1875) internal successors, (995), 16 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:18,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 132.0) internal successors, (2244), 17 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:18,824 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 132.0) internal successors, (2244), 17 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:18,824 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 689 flow. Second operand 16 states and 995 transitions. [2022-12-13 18:07:18,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 1455 flow [2022-12-13 18:07:18,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 117 transitions, 1094 flow, removed 167 selfloop flow, removed 5 redundant places. [2022-12-13 18:07:18,833 INFO L231 Difference]: Finished difference. Result has 89 places, 69 transitions, 762 flow [2022-12-13 18:07:18,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=762, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2022-12-13 18:07:18,834 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 71 predicate places. [2022-12-13 18:07:18,834 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 762 flow [2022-12-13 18:07:18,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.8125) internal successors, (941), 16 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:18,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:18,835 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:18,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:07:19,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:19,037 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 18:07:19,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:19,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1670825511, now seen corresponding path program 6 times [2022-12-13 18:07:19,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:19,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380396312] [2022-12-13 18:07:19,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:19,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:19,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:19,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380396312] [2022-12-13 18:07:19,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380396312] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:07:19,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077588874] [2022-12-13 18:07:19,261 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 18:07:19,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:19,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:07:19,262 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:07:19,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:07:19,319 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-13 18:07:19,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:07:19,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 18:07:19,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:07:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:19,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:07:19,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:19,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077588874] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:07:19,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:07:19,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-12-13 18:07:19,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937289447] [2022-12-13 18:07:19,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:07:19,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 18:07:19,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:19,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 18:07:19,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:07:19,533 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 18:07:19,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 69 transitions, 762 flow. Second operand has 17 states, 17 states have (on average 58.8235294117647) internal successors, (1000), 17 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:19,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:19,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 18:07:19,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:19,938 INFO L130 PetriNetUnfolder]: 408/747 cut-off events. [2022-12-13 18:07:19,938 INFO L131 PetriNetUnfolder]: For 12673/12673 co-relation queries the response was YES. [2022-12-13 18:07:19,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4031 conditions, 747 events. 408/747 cut-off events. For 12673/12673 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3274 event pairs, 44 based on Foata normal form. 32/779 useless extension candidates. Maximal degree in co-relation 3987. Up to 227 conditions per place. [2022-12-13 18:07:19,941 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 73 selfloop transitions, 71 changer transitions 37/181 dead transitions. [2022-12-13 18:07:19,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 181 transitions, 2078 flow [2022-12-13 18:07:19,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 18:07:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-13 18:07:19,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1368 transitions. [2022-12-13 18:07:19,943 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47107438016528924 [2022-12-13 18:07:19,943 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1368 transitions. [2022-12-13 18:07:19,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1368 transitions. [2022-12-13 18:07:19,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:19,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1368 transitions. [2022-12-13 18:07:19,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 62.18181818181818) internal successors, (1368), 22 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:19,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 132.0) internal successors, (3036), 23 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:19,948 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 132.0) internal successors, (3036), 23 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:19,948 INFO L175 Difference]: Start difference. First operand has 89 places, 69 transitions, 762 flow. Second operand 22 states and 1368 transitions. [2022-12-13 18:07:19,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 181 transitions, 2078 flow [2022-12-13 18:07:19,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 181 transitions, 1986 flow, removed 38 selfloop flow, removed 4 redundant places. [2022-12-13 18:07:19,969 INFO L231 Difference]: Finished difference. Result has 120 places, 107 transitions, 1489 flow [2022-12-13 18:07:19,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1489, PETRI_PLACES=120, PETRI_TRANSITIONS=107} [2022-12-13 18:07:19,969 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 102 predicate places. [2022-12-13 18:07:19,969 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 107 transitions, 1489 flow [2022-12-13 18:07:19,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.8235294117647) internal successors, (1000), 17 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:19,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:19,970 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:19,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:07:20,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:20,171 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 18:07:20,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:20,171 INFO L85 PathProgramCache]: Analyzing trace with hash -2139738839, now seen corresponding path program 7 times [2022-12-13 18:07:20,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:20,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803682445] [2022-12-13 18:07:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:20,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:20,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:20,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:20,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803682445] [2022-12-13 18:07:20,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803682445] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:07:20,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083707199] [2022-12-13 18:07:20,329 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 18:07:20,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:20,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:07:20,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:07:20,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:07:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:20,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 18:07:20,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:07:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:20,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:07:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:20,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083707199] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:07:20,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:07:20,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-12-13 18:07:20,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9956799] [2022-12-13 18:07:20,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:07:20,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 18:07:20,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:20,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 18:07:20,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:07:20,525 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 18:07:20,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 107 transitions, 1489 flow. Second operand has 17 states, 17 states have (on average 58.76470588235294) internal successors, (999), 17 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:20,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:20,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 18:07:20,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:21,048 INFO L130 PetriNetUnfolder]: 572/1027 cut-off events. [2022-12-13 18:07:21,048 INFO L131 PetriNetUnfolder]: For 34576/34576 co-relation queries the response was YES. [2022-12-13 18:07:21,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7290 conditions, 1027 events. 572/1027 cut-off events. For 34576/34576 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4755 event pairs, 20 based on Foata normal form. 32/1059 useless extension candidates. Maximal degree in co-relation 7231. Up to 327 conditions per place. [2022-12-13 18:07:21,054 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 61 selfloop transitions, 127 changer transitions 48/236 dead transitions. [2022-12-13 18:07:21,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 236 transitions, 3637 flow [2022-12-13 18:07:21,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 18:07:21,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-13 18:07:21,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1679 transitions. [2022-12-13 18:07:21,057 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4710998877665544 [2022-12-13 18:07:21,057 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1679 transitions. [2022-12-13 18:07:21,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1679 transitions. [2022-12-13 18:07:21,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:21,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1679 transitions. [2022-12-13 18:07:21,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 62.18518518518518) internal successors, (1679), 27 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:21,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 132.0) internal successors, (3696), 28 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:21,062 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 132.0) internal successors, (3696), 28 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:21,063 INFO L175 Difference]: Start difference. First operand has 120 places, 107 transitions, 1489 flow. Second operand 27 states and 1679 transitions. [2022-12-13 18:07:21,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 236 transitions, 3637 flow [2022-12-13 18:07:21,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 236 transitions, 3313 flow, removed 148 selfloop flow, removed 7 redundant places. [2022-12-13 18:07:21,121 INFO L231 Difference]: Finished difference. Result has 154 places, 149 transitions, 2480 flow [2022-12-13 18:07:21,121 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2480, PETRI_PLACES=154, PETRI_TRANSITIONS=149} [2022-12-13 18:07:21,122 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 136 predicate places. [2022-12-13 18:07:21,122 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 149 transitions, 2480 flow [2022-12-13 18:07:21,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.76470588235294) internal successors, (999), 17 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:21,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:21,122 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:21,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 18:07:21,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 18:07:21,324 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 18:07:21,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:21,325 INFO L85 PathProgramCache]: Analyzing trace with hash -670002905, now seen corresponding path program 8 times [2022-12-13 18:07:21,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:21,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099203651] [2022-12-13 18:07:21,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:21,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:21,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:21,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099203651] [2022-12-13 18:07:21,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099203651] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:07:21,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331305498] [2022-12-13 18:07:21,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:07:21,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:21,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:07:21,538 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:07:21,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:07:21,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:07:21,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:07:21,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 18:07:21,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:07:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:21,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:07:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:21,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331305498] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:07:21,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:07:21,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-12-13 18:07:21,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190928170] [2022-12-13 18:07:21,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:07:21,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 18:07:21,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:21,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 18:07:21,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2022-12-13 18:07:21,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 18:07:21,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 149 transitions, 2480 flow. Second operand has 25 states, 25 states have (on average 58.44) internal successors, (1461), 25 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:21,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:21,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 18:07:21,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:22,801 INFO L130 PetriNetUnfolder]: 804/1427 cut-off events. [2022-12-13 18:07:22,801 INFO L131 PetriNetUnfolder]: For 82195/82195 co-relation queries the response was YES. [2022-12-13 18:07:22,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13179 conditions, 1427 events. 804/1427 cut-off events. For 82195/82195 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6486 event pairs, 18 based on Foata normal form. 40/1467 useless extension candidates. Maximal degree in co-relation 13105. Up to 482 conditions per place. [2022-12-13 18:07:22,810 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 71 selfloop transitions, 184 changer transitions 74/329 dead transitions. [2022-12-13 18:07:22,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 329 transitions, 6809 flow [2022-12-13 18:07:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-13 18:07:22,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-12-13 18:07:22,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2481 transitions. [2022-12-13 18:07:22,813 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46988636363636366 [2022-12-13 18:07:22,813 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2481 transitions. [2022-12-13 18:07:22,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2481 transitions. [2022-12-13 18:07:22,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:22,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2481 transitions. [2022-12-13 18:07:22,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 62.025) internal successors, (2481), 40 states have internal predecessors, (2481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:22,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 132.0) internal successors, (5412), 41 states have internal predecessors, (5412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:22,822 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 132.0) internal successors, (5412), 41 states have internal predecessors, (5412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:22,822 INFO L175 Difference]: Start difference. First operand has 154 places, 149 transitions, 2480 flow. Second operand 40 states and 2481 transitions. [2022-12-13 18:07:22,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 329 transitions, 6809 flow [2022-12-13 18:07:22,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 329 transitions, 5289 flow, removed 737 selfloop flow, removed 10 redundant places. [2022-12-13 18:07:22,929 INFO L231 Difference]: Finished difference. Result has 203 places, 210 transitions, 3700 flow [2022-12-13 18:07:22,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3700, PETRI_PLACES=203, PETRI_TRANSITIONS=210} [2022-12-13 18:07:22,939 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 185 predicate places. [2022-12-13 18:07:22,940 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 210 transitions, 3700 flow [2022-12-13 18:07:22,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 58.44) internal successors, (1461), 25 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:22,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:22,940 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:22,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 18:07:23,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:23,141 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 18:07:23,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:23,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1906299703, now seen corresponding path program 9 times [2022-12-13 18:07:23,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:23,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832828391] [2022-12-13 18:07:23,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:23,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:23,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:23,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832828391] [2022-12-13 18:07:23,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832828391] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:07:23,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673950772] [2022-12-13 18:07:23,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:07:23,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:23,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:07:23,443 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:07:23,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 18:07:23,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-12-13 18:07:23,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:07:23,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 18:07:23,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:07:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:23,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:07:23,857 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:23,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673950772] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:07:23,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:07:23,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 26 [2022-12-13 18:07:23,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159375202] [2022-12-13 18:07:23,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:07:23,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 18:07:23,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:23,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 18:07:23,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2022-12-13 18:07:23,933 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 18:07:23,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 210 transitions, 3700 flow. Second operand has 28 states, 28 states have (on average 58.464285714285715) internal successors, (1637), 28 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:23,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:23,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 18:07:23,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:24,667 INFO L130 PetriNetUnfolder]: 876/1571 cut-off events. [2022-12-13 18:07:24,668 INFO L131 PetriNetUnfolder]: For 110727/110727 co-relation queries the response was YES. [2022-12-13 18:07:24,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15846 conditions, 1571 events. 876/1571 cut-off events. For 110727/110727 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 7247 event pairs, 261 based on Foata normal form. 32/1603 useless extension candidates. Maximal degree in co-relation 15753. Up to 1189 conditions per place. [2022-12-13 18:07:24,681 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 215 selfloop transitions, 47 changer transitions 51/313 dead transitions. [2022-12-13 18:07:24,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 313 transitions, 6700 flow [2022-12-13 18:07:24,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 18:07:24,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-13 18:07:24,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1727 transitions. [2022-12-13 18:07:24,683 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2022-12-13 18:07:24,683 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1727 transitions. [2022-12-13 18:07:24,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1727 transitions. [2022-12-13 18:07:24,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:24,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1727 transitions. [2022-12-13 18:07:24,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 61.67857142857143) internal successors, (1727), 28 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:24,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 132.0) internal successors, (3828), 29 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:24,688 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 132.0) internal successors, (3828), 29 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:24,688 INFO L175 Difference]: Start difference. First operand has 203 places, 210 transitions, 3700 flow. Second operand 28 states and 1727 transitions. [2022-12-13 18:07:24,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 313 transitions, 6700 flow [2022-12-13 18:07:24,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 313 transitions, 5464 flow, removed 590 selfloop flow, removed 8 redundant places. [2022-12-13 18:07:24,911 INFO L231 Difference]: Finished difference. Result has 232 places, 228 transitions, 3617 flow [2022-12-13 18:07:24,912 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2900, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3617, PETRI_PLACES=232, PETRI_TRANSITIONS=228} [2022-12-13 18:07:24,912 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 214 predicate places. [2022-12-13 18:07:24,912 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 228 transitions, 3617 flow [2022-12-13 18:07:24,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 58.464285714285715) internal successors, (1637), 28 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:24,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:24,912 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:24,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 18:07:25,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:25,114 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 18:07:25,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:25,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1204742983, now seen corresponding path program 10 times [2022-12-13 18:07:25,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:25,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771896828] [2022-12-13 18:07:25,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:25,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:25,406 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:25,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:25,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771896828] [2022-12-13 18:07:25,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771896828] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:07:25,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759936698] [2022-12-13 18:07:25,407 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 18:07:25,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:25,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:07:25,408 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:07:25,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 18:07:25,463 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 18:07:25,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:07:25,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 18:07:25,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:07:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:25,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:07:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:25,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759936698] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:07:25,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:07:25,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 28 [2022-12-13 18:07:25,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244465649] [2022-12-13 18:07:25,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:07:25,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-13 18:07:25,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:25,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-13 18:07:25,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2022-12-13 18:07:25,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 18:07:25,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 228 transitions, 3617 flow. Second operand has 30 states, 30 states have (on average 58.46666666666667) internal successors, (1754), 30 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:25,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:25,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 18:07:25,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:26,932 INFO L130 PetriNetUnfolder]: 1108/2035 cut-off events. [2022-12-13 18:07:26,932 INFO L131 PetriNetUnfolder]: For 198628/198628 co-relation queries the response was YES. [2022-12-13 18:07:26,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21056 conditions, 2035 events. 1108/2035 cut-off events. For 198628/198628 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 10174 event pairs, 162 based on Foata normal form. 32/2067 useless extension candidates. Maximal degree in co-relation 20953. Up to 782 conditions per place. [2022-12-13 18:07:26,950 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 176 selfloop transitions, 160 changer transitions 63/399 dead transitions. [2022-12-13 18:07:26,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 399 transitions, 7428 flow [2022-12-13 18:07:26,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 18:07:26,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-13 18:07:26,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2100 transitions. [2022-12-13 18:07:26,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4679144385026738 [2022-12-13 18:07:26,954 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2100 transitions. [2022-12-13 18:07:26,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2100 transitions. [2022-12-13 18:07:26,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:26,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2100 transitions. [2022-12-13 18:07:26,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 61.76470588235294) internal successors, (2100), 34 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:26,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 132.0) internal successors, (4620), 35 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:26,962 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 132.0) internal successors, (4620), 35 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:26,962 INFO L175 Difference]: Start difference. First operand has 232 places, 228 transitions, 3617 flow. Second operand 34 states and 2100 transitions. [2022-12-13 18:07:26,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 399 transitions, 7428 flow [2022-12-13 18:07:27,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 399 transitions, 6941 flow, removed 218 selfloop flow, removed 14 redundant places. [2022-12-13 18:07:27,335 INFO L231 Difference]: Finished difference. Result has 263 places, 285 transitions, 4805 flow [2022-12-13 18:07:27,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=3130, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4805, PETRI_PLACES=263, PETRI_TRANSITIONS=285} [2022-12-13 18:07:27,335 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 245 predicate places. [2022-12-13 18:07:27,335 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 285 transitions, 4805 flow [2022-12-13 18:07:27,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 58.46666666666667) internal successors, (1754), 30 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:27,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:27,336 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:27,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 18:07:27,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 18:07:27,538 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 18:07:27,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:27,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1577135253, now seen corresponding path program 11 times [2022-12-13 18:07:27,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:27,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469167386] [2022-12-13 18:07:27,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:27,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:27,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:27,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469167386] [2022-12-13 18:07:27,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469167386] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:07:27,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894684285] [2022-12-13 18:07:27,792 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 18:07:27,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:27,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:07:27,793 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:07:27,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 18:07:27,857 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-12-13 18:07:27,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:07:27,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 18:07:27,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:07:27,916 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:27,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:07:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:28,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894684285] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:07:28,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:07:28,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 30 [2022-12-13 18:07:28,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265626473] [2022-12-13 18:07:28,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:07:28,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 18:07:28,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:28,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 18:07:28,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=805, Unknown=0, NotChecked=0, Total=992 [2022-12-13 18:07:28,244 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 18:07:28,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 285 transitions, 4805 flow. Second operand has 32 states, 32 states have (on average 58.4375) internal successors, (1870), 32 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:28,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:28,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 18:07:28,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:29,477 INFO L130 PetriNetUnfolder]: 1460/2739 cut-off events. [2022-12-13 18:07:29,478 INFO L131 PetriNetUnfolder]: For 347400/347400 co-relation queries the response was YES. [2022-12-13 18:07:29,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31810 conditions, 2739 events. 1460/2739 cut-off events. For 347400/347400 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 15057 event pairs, 100 based on Foata normal form. 32/2771 useless extension candidates. Maximal degree in co-relation 31694. Up to 1118 conditions per place. [2022-12-13 18:07:29,498 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 130 selfloop transitions, 304 changer transitions 73/507 dead transitions. [2022-12-13 18:07:29,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 507 transitions, 10651 flow [2022-12-13 18:07:29,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-13 18:07:29,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-13 18:07:29,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2409 transitions. [2022-12-13 18:07:29,501 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2022-12-13 18:07:29,501 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2409 transitions. [2022-12-13 18:07:29,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2409 transitions. [2022-12-13 18:07:29,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:29,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2409 transitions. [2022-12-13 18:07:29,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 61.76923076923077) internal successors, (2409), 39 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:29,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 132.0) internal successors, (5280), 40 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:29,507 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 132.0) internal successors, (5280), 40 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:29,507 INFO L175 Difference]: Start difference. First operand has 263 places, 285 transitions, 4805 flow. Second operand 39 states and 2409 transitions. [2022-12-13 18:07:29,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 507 transitions, 10651 flow [2022-12-13 18:07:30,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 507 transitions, 9619 flow, removed 438 selfloop flow, removed 20 redundant places. [2022-12-13 18:07:30,307 INFO L231 Difference]: Finished difference. Result has 295 places, 379 transitions, 7094 flow [2022-12-13 18:07:30,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=4103, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=7094, PETRI_PLACES=295, PETRI_TRANSITIONS=379} [2022-12-13 18:07:30,308 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 277 predicate places. [2022-12-13 18:07:30,308 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 379 transitions, 7094 flow [2022-12-13 18:07:30,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 58.4375) internal successors, (1870), 32 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:30,308 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:30,308 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:30,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 18:07:30,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 18:07:30,510 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 18:07:30,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:30,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1010657953, now seen corresponding path program 12 times [2022-12-13 18:07:30,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:30,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332330319] [2022-12-13 18:07:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:30,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:30,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:30,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332330319] [2022-12-13 18:07:30,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332330319] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:07:30,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019602304] [2022-12-13 18:07:30,751 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 18:07:30,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:30,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:07:30,752 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:07:30,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 18:07:30,815 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-12-13 18:07:30,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:07:30,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 18:07:30,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:07:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:30,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:07:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:31,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019602304] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:07:31,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:07:31,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 33 [2022-12-13 18:07:31,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146316774] [2022-12-13 18:07:31,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:07:31,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-13 18:07:31,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:31,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-13 18:07:31,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1000, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 18:07:31,215 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 18:07:31,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 379 transitions, 7094 flow. Second operand has 35 states, 35 states have (on average 58.42857142857143) internal successors, (2045), 35 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:31,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:31,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 18:07:31,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:32,766 INFO L130 PetriNetUnfolder]: 1832/3423 cut-off events. [2022-12-13 18:07:32,766 INFO L131 PetriNetUnfolder]: For 592477/592477 co-relation queries the response was YES. [2022-12-13 18:07:32,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45036 conditions, 3423 events. 1832/3423 cut-off events. For 592477/592477 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 19822 event pairs, 38 based on Foata normal form. 32/3455 useless extension candidates. Maximal degree in co-relation 44905. Up to 1430 conditions per place. [2022-12-13 18:07:32,794 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 106 selfloop transitions, 428 changer transitions 83/617 dead transitions. [2022-12-13 18:07:32,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 617 transitions, 14133 flow [2022-12-13 18:07:32,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-13 18:07:32,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-13 18:07:32,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2782 transitions. [2022-12-13 18:07:32,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46835016835016835 [2022-12-13 18:07:32,797 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2782 transitions. [2022-12-13 18:07:32,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2782 transitions. [2022-12-13 18:07:32,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:32,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2782 transitions. [2022-12-13 18:07:32,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 61.82222222222222) internal successors, (2782), 45 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:32,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 132.0) internal successors, (6072), 46 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:32,803 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 132.0) internal successors, (6072), 46 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:32,803 INFO L175 Difference]: Start difference. First operand has 295 places, 379 transitions, 7094 flow. Second operand 45 states and 2782 transitions. [2022-12-13 18:07:32,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 617 transitions, 14133 flow [2022-12-13 18:07:34,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 617 transitions, 12092 flow, removed 945 selfloop flow, removed 17 redundant places. [2022-12-13 18:07:34,107 INFO L231 Difference]: Finished difference. Result has 337 places, 475 transitions, 9022 flow [2022-12-13 18:07:34,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=5901, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=9022, PETRI_PLACES=337, PETRI_TRANSITIONS=475} [2022-12-13 18:07:34,108 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 319 predicate places. [2022-12-13 18:07:34,108 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 475 transitions, 9022 flow [2022-12-13 18:07:34,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 58.42857142857143) internal successors, (2045), 35 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:34,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:34,108 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:34,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 18:07:34,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 18:07:34,309 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 18:07:34,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:34,310 INFO L85 PathProgramCache]: Analyzing trace with hash 856890951, now seen corresponding path program 13 times [2022-12-13 18:07:34,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:34,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916519054] [2022-12-13 18:07:34,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:34,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:34,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:34,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916519054] [2022-12-13 18:07:34,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916519054] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:07:34,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601198302] [2022-12-13 18:07:34,527 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 18:07:34,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:34,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:07:34,528 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:07:34,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 18:07:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:34,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 18:07:34,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:07:34,638 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:34,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:07:34,793 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:34,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601198302] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:07:34,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:07:34,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 27 [2022-12-13 18:07:34,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213942966] [2022-12-13 18:07:34,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:07:34,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 18:07:34,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:34,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 18:07:34,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2022-12-13 18:07:34,833 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 18:07:34,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 475 transitions, 9022 flow. Second operand has 29 states, 29 states have (on average 58.48275862068966) internal successors, (1696), 29 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:34,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:34,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 18:07:34,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:36,505 INFO L130 PetriNetUnfolder]: 2012/3727 cut-off events. [2022-12-13 18:07:36,505 INFO L131 PetriNetUnfolder]: For 693158/693158 co-relation queries the response was YES. [2022-12-13 18:07:36,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51316 conditions, 3727 events. 2012/3727 cut-off events. For 693158/693158 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21724 event pairs, 16 based on Foata normal form. 32/3759 useless extension candidates. Maximal degree in co-relation 51170. Up to 1542 conditions per place. [2022-12-13 18:07:36,540 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 103 selfloop transitions, 487 changer transitions 91/681 dead transitions. [2022-12-13 18:07:36,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 681 transitions, 16437 flow [2022-12-13 18:07:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-13 18:07:36,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-12-13 18:07:36,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 3217 transitions. [2022-12-13 18:07:36,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46867715617715616 [2022-12-13 18:07:36,543 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 3217 transitions. [2022-12-13 18:07:36,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 3217 transitions. [2022-12-13 18:07:36,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:36,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 3217 transitions. [2022-12-13 18:07:36,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 61.86538461538461) internal successors, (3217), 52 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:36,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 132.0) internal successors, (6996), 53 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:36,551 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 132.0) internal successors, (6996), 53 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:36,551 INFO L175 Difference]: Start difference. First operand has 337 places, 475 transitions, 9022 flow. Second operand 52 states and 3217 transitions. [2022-12-13 18:07:36,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 681 transitions, 16437 flow [2022-12-13 18:07:37,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 681 transitions, 15091 flow, removed 479 selfloop flow, removed 25 redundant places. [2022-12-13 18:07:37,910 INFO L231 Difference]: Finished difference. Result has 379 places, 517 transitions, 10789 flow [2022-12-13 18:07:37,911 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=7688, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=446, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=10789, PETRI_PLACES=379, PETRI_TRANSITIONS=517} [2022-12-13 18:07:37,911 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 361 predicate places. [2022-12-13 18:07:37,911 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 517 transitions, 10789 flow [2022-12-13 18:07:37,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 58.48275862068966) internal successors, (1696), 29 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:37,911 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:37,912 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:37,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 18:07:38,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 18:07:38,113 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 18:07:38,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:38,114 INFO L85 PathProgramCache]: Analyzing trace with hash 265762891, now seen corresponding path program 14 times [2022-12-13 18:07:38,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:38,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163972350] [2022-12-13 18:07:38,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:38,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:38,404 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:38,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:38,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163972350] [2022-12-13 18:07:38,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163972350] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:07:38,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696564911] [2022-12-13 18:07:38,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:07:38,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:38,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:07:38,406 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:07:38,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 18:07:38,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:07:38,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:07:38,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 18:07:38,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:07:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:38,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:07:38,681 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:38,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696564911] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:07:38,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:07:38,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 23 [2022-12-13 18:07:38,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736096145] [2022-12-13 18:07:38,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:07:38,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 18:07:38,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:38,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 18:07:38,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2022-12-13 18:07:38,721 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 18:07:38,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 517 transitions, 10789 flow. Second operand has 25 states, 25 states have (on average 58.2) internal successors, (1455), 25 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:38,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:38,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 18:07:38,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:40,564 INFO L130 PetriNetUnfolder]: 2104/3899 cut-off events. [2022-12-13 18:07:40,564 INFO L131 PetriNetUnfolder]: For 983755/983755 co-relation queries the response was YES. [2022-12-13 18:07:40,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60999 conditions, 3899 events. 2104/3899 cut-off events. For 983755/983755 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 22640 event pairs, 78 based on Foata normal form. 8/3907 useless extension candidates. Maximal degree in co-relation 60837. Up to 1606 conditions per place. [2022-12-13 18:07:40,601 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 114 selfloop transitions, 475 changer transitions 80/669 dead transitions. [2022-12-13 18:07:40,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 669 transitions, 17524 flow [2022-12-13 18:07:40,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-13 18:07:40,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-13 18:07:40,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2653 transitions. [2022-12-13 18:07:40,603 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46740662438336855 [2022-12-13 18:07:40,603 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2653 transitions. [2022-12-13 18:07:40,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2653 transitions. [2022-12-13 18:07:40,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:40,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2653 transitions. [2022-12-13 18:07:40,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 61.69767441860465) internal successors, (2653), 43 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:40,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 132.0) internal successors, (5808), 44 states have internal predecessors, (5808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:40,610 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 132.0) internal successors, (5808), 44 states have internal predecessors, (5808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:40,610 INFO L175 Difference]: Start difference. First operand has 379 places, 517 transitions, 10789 flow. Second operand 43 states and 2653 transitions. [2022-12-13 18:07:40,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 669 transitions, 17524 flow [2022-12-13 18:07:42,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 669 transitions, 14845 flow, removed 1007 selfloop flow, removed 36 redundant places. [2022-12-13 18:07:42,757 INFO L231 Difference]: Finished difference. Result has 392 places, 540 transitions, 10476 flow [2022-12-13 18:07:42,758 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=8816, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=452, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=10476, PETRI_PLACES=392, PETRI_TRANSITIONS=540} [2022-12-13 18:07:42,758 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 374 predicate places. [2022-12-13 18:07:42,758 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 540 transitions, 10476 flow [2022-12-13 18:07:42,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 58.2) internal successors, (1455), 25 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:42,758 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:42,759 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:42,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 18:07:42,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 18:07:42,960 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 18:07:42,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:42,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1933498843, now seen corresponding path program 15 times [2022-12-13 18:07:42,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:42,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723979822] [2022-12-13 18:07:42,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:42,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 90 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:43,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:43,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723979822] [2022-12-13 18:07:43,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723979822] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:07:43,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663879888] [2022-12-13 18:07:43,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:07:43,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:43,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:07:43,067 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:07:43,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 18:07:43,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-13 18:07:43,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:07:43,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 18:07:43,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:07:43,174 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:43,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:07:43,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663879888] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:43,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:07:43,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 14 [2022-12-13 18:07:43,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625679238] [2022-12-13 18:07:43,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:43,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 18:07:43,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:43,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 18:07:43,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:07:43,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 132 [2022-12-13 18:07:43,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 540 transitions, 10476 flow. Second operand has 13 states, 13 states have (on average 62.23076923076923) internal successors, (809), 13 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:43,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:43,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 132 [2022-12-13 18:07:43,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:47,195 INFO L130 PetriNetUnfolder]: 8517/13575 cut-off events. [2022-12-13 18:07:47,195 INFO L131 PetriNetUnfolder]: For 3431495/3431495 co-relation queries the response was YES. [2022-12-13 18:07:47,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186744 conditions, 13575 events. 8517/13575 cut-off events. For 3431495/3431495 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 86313 event pairs, 173 based on Foata normal form. 818/14393 useless extension candidates. Maximal degree in co-relation 186584. Up to 6896 conditions per place. [2022-12-13 18:07:47,329 INFO L137 encePairwiseOnDemand]: 129/132 looper letters, 0 selfloop transitions, 0 changer transitions 2498/2498 dead transitions. [2022-12-13 18:07:47,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 2498 transitions, 49956 flow [2022-12-13 18:07:47,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 18:07:47,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 18:07:47,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 877 transitions. [2022-12-13 18:07:47,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5110722610722611 [2022-12-13 18:07:47,331 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 877 transitions. [2022-12-13 18:07:47,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 877 transitions. [2022-12-13 18:07:47,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:47,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 877 transitions. [2022-12-13 18:07:47,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 67.46153846153847) internal successors, (877), 13 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:47,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:47,335 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:47,335 INFO L175 Difference]: Start difference. First operand has 392 places, 540 transitions, 10476 flow. Second operand 13 states and 877 transitions. [2022-12-13 18:07:47,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 2498 transitions, 49956 flow [2022-12-13 18:07:52,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 2498 transitions, 46055 flow, removed 336 selfloop flow, removed 35 redundant places. [2022-12-13 18:07:52,221 INFO L231 Difference]: Finished difference. Result has 363 places, 0 transitions, 0 flow [2022-12-13 18:07:52,222 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=8643, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=363, PETRI_TRANSITIONS=0} [2022-12-13 18:07:52,222 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 345 predicate places. [2022-12-13 18:07:52,222 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 0 transitions, 0 flow [2022-12-13 18:07:52,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 62.23076923076923) internal successors, (809), 13 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:52,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-13 18:07:52,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-13 18:07:52,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-13 18:07:52,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 18:07:52,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 18:07:52,426 INFO L445 BasicCegarLoop]: Path program histogram: [15, 2, 1] [2022-12-13 18:07:52,434 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 18:07:52,434 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:07:52,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:07:52 BasicIcfg [2022-12-13 18:07:52,438 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:07:52,439 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:07:52,439 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:07:52,439 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:07:52,439 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:07:14" (3/4) ... [2022-12-13 18:07:52,442 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 18:07:52,447 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-12-13 18:07:52,447 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-12-13 18:07:52,450 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-12-13 18:07:52,450 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 18:07:52,450 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 18:07:52,450 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 18:07:52,469 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 18:07:52,469 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:07:52,470 INFO L158 Benchmark]: Toolchain (without parser) took 39022.42ms. Allocated memory was 148.9MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 110.5MB in the beginning and 604.7MB in the end (delta: -494.2MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-12-13 18:07:52,470 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 148.9MB. Free memory was 113.5MB in the beginning and 113.4MB in the end (delta: 29.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:07:52,470 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.24ms. Allocated memory is still 148.9MB. Free memory was 110.5MB in the beginning and 90.9MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 18:07:52,470 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.94ms. Allocated memory is still 148.9MB. Free memory was 90.2MB in the beginning and 88.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:07:52,471 INFO L158 Benchmark]: Boogie Preprocessor took 16.11ms. Allocated memory is still 148.9MB. Free memory was 88.7MB in the beginning and 87.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:07:52,471 INFO L158 Benchmark]: RCFGBuilder took 259.32ms. Allocated memory is still 148.9MB. Free memory was 87.4MB in the beginning and 74.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 18:07:52,471 INFO L158 Benchmark]: TraceAbstraction took 38357.02ms. Allocated memory was 148.9MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 74.1MB in the beginning and 607.9MB in the end (delta: -533.7MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-12-13 18:07:52,471 INFO L158 Benchmark]: Witness Printer took 30.67ms. Allocated memory is still 1.8GB. Free memory was 606.8MB in the beginning and 604.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:07:52,473 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 148.9MB. Free memory was 113.5MB in the beginning and 113.4MB in the end (delta: 29.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 328.24ms. Allocated memory is still 148.9MB. Free memory was 110.5MB in the beginning and 90.9MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.94ms. Allocated memory is still 148.9MB. Free memory was 90.2MB in the beginning and 88.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.11ms. Allocated memory is still 148.9MB. Free memory was 88.7MB in the beginning and 87.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 259.32ms. Allocated memory is still 148.9MB. Free memory was 87.4MB in the beginning and 74.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 38357.02ms. Allocated memory was 148.9MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 74.1MB in the beginning and 607.9MB in the end (delta: -533.7MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 30.67ms. Allocated memory is still 1.8GB. Free memory was 606.8MB in the beginning and 604.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 70 PlacesBefore, 18 PlacesAfterwards, 68 TransitionsBefore, 14 TransitionsAfterwards, 1122 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 62 TotalNumberOfCompositions, 1071 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 912, independent: 879, independent conditional: 0, independent unconditional: 879, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 601, independent: 588, independent conditional: 0, independent unconditional: 588, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 912, independent: 291, independent conditional: 0, independent unconditional: 291, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 601, unknown conditional: 0, unknown unconditional: 601] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 722]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 38.3s, OverallIterations: 18, TraceHistogramMax: 11, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 27.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5040 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4906 mSDsluCounter, 817 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 781 mSDsCounter, 550 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5505 IncrementalHoareTripleChecker+Invalid, 6055 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 550 mSolverCounterUnsat, 36 mSDtfsCounter, 5505 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 977 GetRequests, 299 SyntacticMatches, 73 SemanticMatches, 605 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9411 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10789occurred in iteration=16, InterpolantAutomatonStates: 412, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 566 NumberOfCodeBlocks, 565 NumberOfCodeBlocksAsserted, 76 NumberOfCheckSat, 753 ConstructedInterpolants, 0 QuantifiedInterpolants, 3369 SizeOfPredicates, 132 NumberOfNonLiveVariables, 2120 ConjunctsInSsa, 212 ConjunctsInUnsatCore, 41 InterpolantComputations, 7 PerfectInterpolantSequences, 214/1679 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 18:07:52,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902945d9-bbb6-403c-82bf-909e1ee0bf7d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE