./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy11.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/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_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/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_47e2e732-3354-4606-bdb2-ac21079fef46/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 a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 12:55:10,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:55:10,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:55:10,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:55:10,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:55:10,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:55:10,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:55:10,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:55:10,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:55:10,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:55:10,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:55:10,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:55:10,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:55:10,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:55:10,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:55:10,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:55:10,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:55:10,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:55:10,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:55:10,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:55:10,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:55:10,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:55:10,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:55:10,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:55:10,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:55:10,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:55:10,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:55:10,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:55:10,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:55:10,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:55:10,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:55:10,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:55:10,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:55:10,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:55:10,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:55:10,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:55:10,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:55:10,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:55:10,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:55:10,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:55:10,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:55:10,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 12:55:10,090 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:55:10,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:55:10,091 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:55:10,091 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:55:10,092 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:55:10,092 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:55:10,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:55:10,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:55:10,093 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:55:10,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:55:10,094 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:55:10,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:55:10,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:55:10,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:55:10,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:55:10,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:55:10,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:55:10,095 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:55:10,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:55:10,095 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:55:10,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:55:10,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:55:10,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:55:10,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:55:10,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:55:10,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:55:10,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:55:10,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:55:10,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:55:10,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:55:10,097 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:55:10,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:55:10,098 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:55:10,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:55:10,098 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:55:10,098 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_47e2e732-3354-4606-bdb2-ac21079fef46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 [2022-12-13 12:55:10,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:55:10,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:55:10,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:55:10,315 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:55:10,315 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:55:10,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/test-easy11.wvr.c [2022-12-13 12:55:12,887 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:55:13,037 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:55:13,037 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/sv-benchmarks/c/weaver/test-easy11.wvr.c [2022-12-13 12:55:13,042 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/data/07f341f31/6a5c86eb35c04a9a9591c7adc4343e45/FLAG8dd5dd2e5 [2022-12-13 12:55:13,454 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/data/07f341f31/6a5c86eb35c04a9a9591c7adc4343e45 [2022-12-13 12:55:13,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:55:13,457 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:55:13,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:55:13,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:55:13,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:55:13,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:55:13" (1/1) ... [2022-12-13 12:55:13,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67487eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:13, skipping insertion in model container [2022-12-13 12:55:13,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:55:13" (1/1) ... [2022-12-13 12:55:13,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:55:13,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:55:13,582 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:55:13,582 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:55:13,584 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:55:13,584 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:55:13,588 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_47e2e732-3354-4606-bdb2-ac21079fef46/sv-benchmarks/c/weaver/test-easy11.wvr.c[2005,2018] [2022-12-13 12:55:13,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:55:13,598 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:55:13,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:55:13,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:55:13,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:55:13,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:55:13,611 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_47e2e732-3354-4606-bdb2-ac21079fef46/sv-benchmarks/c/weaver/test-easy11.wvr.c[2005,2018] [2022-12-13 12:55:13,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:55:13,621 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:55:13,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:13 WrapperNode [2022-12-13 12:55:13,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:55:13,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:55:13,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:55:13,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:55:13,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:13" (1/1) ... [2022-12-13 12:55:13,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:13" (1/1) ... [2022-12-13 12:55:13,650 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-12-13 12:55:13,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:55:13,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:55:13,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:55:13,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:55:13,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:13" (1/1) ... [2022-12-13 12:55:13,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:13" (1/1) ... [2022-12-13 12:55:13,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:13" (1/1) ... [2022-12-13 12:55:13,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:13" (1/1) ... [2022-12-13 12:55:13,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:13" (1/1) ... [2022-12-13 12:55:13,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:13" (1/1) ... [2022-12-13 12:55:13,672 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:13" (1/1) ... [2022-12-13 12:55:13,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:13" (1/1) ... [2022-12-13 12:55:13,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:55:13,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:55:13,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:55:13,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:55:13,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:13" (1/1) ... [2022-12-13 12:55:13,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:55:13,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:55:13,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:55:13,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:55:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:55:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 12:55:13,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 12:55:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 12:55:13,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 12:55:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:55:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:55:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:55:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 12:55:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 12:55:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:55:13,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:55:13,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:55:13,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:55:13,745 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 12:55:13,822 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:55:13,824 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:55:13,949 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:55:13,956 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:55:13,956 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 12:55:13,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:55:13 BoogieIcfgContainer [2022-12-13 12:55:13,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:55:13,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:55:13,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:55:13,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:55:13,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:55:13" (1/3) ... [2022-12-13 12:55:13,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ffdbe95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:55:13, skipping insertion in model container [2022-12-13 12:55:13,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:55:13" (2/3) ... [2022-12-13 12:55:13,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ffdbe95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:55:13, skipping insertion in model container [2022-12-13 12:55:13,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:55:13" (3/3) ... [2022-12-13 12:55:13,967 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2022-12-13 12:55:13,975 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 12:55:13,986 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:55:13,986 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 12:55:13,987 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:55:14,051 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 12:55:14,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 87 transitions, 190 flow [2022-12-13 12:55:14,132 INFO L130 PetriNetUnfolder]: 6/85 cut-off events. [2022-12-13 12:55:14,132 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:55:14,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 85 events. 6/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2022-12-13 12:55:14,138 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 87 transitions, 190 flow [2022-12-13 12:55:14,141 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 76 transitions, 164 flow [2022-12-13 12:55:14,145 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:55:14,155 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 76 transitions, 164 flow [2022-12-13 12:55:14,158 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 76 transitions, 164 flow [2022-12-13 12:55:14,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 76 transitions, 164 flow [2022-12-13 12:55:14,186 INFO L130 PetriNetUnfolder]: 6/76 cut-off events. [2022-12-13 12:55:14,186 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:55:14,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 76 events. 6/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2022-12-13 12:55:14,188 INFO L119 LiptonReduction]: Number of co-enabled transitions 572 [2022-12-13 12:55:15,776 INFO L134 LiptonReduction]: Checked pairs total: 627 [2022-12-13 12:55:15,776 INFO L136 LiptonReduction]: Total number of compositions: 72 [2022-12-13 12:55:15,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:55:15,793 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;@6e85e48, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:55:15,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 12:55:15,797 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2022-12-13 12:55:15,797 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:55:15,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:15,798 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:15,798 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:55:15,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:15,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1967307730, now seen corresponding path program 1 times [2022-12-13 12:55:15,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:15,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350633438] [2022-12-13 12:55:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:15,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:16,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:16,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350633438] [2022-12-13 12:55:16,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350633438] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:16,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:16,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:55:16,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858245983] [2022-12-13 12:55:16,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:16,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:55:16,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:16,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:55:16,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:55:16,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 159 [2022-12-13 12:55:16,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:16,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 159 [2022-12-13 12:55:16,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:16,447 INFO L130 PetriNetUnfolder]: 58/106 cut-off events. [2022-12-13 12:55:16,448 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-13 12:55:16,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 106 events. 58/106 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 246 event pairs, 11 based on Foata normal form. 1/81 useless extension candidates. Maximal degree in co-relation 180. Up to 48 conditions per place. [2022-12-13 12:55:16,450 INFO L137 encePairwiseOnDemand]: 151/159 looper letters, 26 selfloop transitions, 10 changer transitions 5/41 dead transitions. [2022-12-13 12:55:16,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 41 transitions, 185 flow [2022-12-13 12:55:16,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:55:16,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:55:16,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 504 transitions. [2022-12-13 12:55:16,465 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2022-12-13 12:55:16,466 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 504 transitions. [2022-12-13 12:55:16,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 504 transitions. [2022-12-13 12:55:16,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:16,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 504 transitions. [2022-12-13 12:55:16,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,482 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,485 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 7 states and 504 transitions. [2022-12-13 12:55:16,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 41 transitions, 185 flow [2022-12-13 12:55:16,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 41 transitions, 171 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 12:55:16,490 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 101 flow [2022-12-13 12:55:16,492 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=101, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2022-12-13 12:55:16,495 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 7 predicate places. [2022-12-13 12:55:16,496 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 101 flow [2022-12-13 12:55:16,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,496 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:16,496 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:16,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:55:16,497 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:55:16,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:16,497 INFO L85 PathProgramCache]: Analyzing trace with hash 68474156, now seen corresponding path program 2 times [2022-12-13 12:55:16,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:16,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577014510] [2022-12-13 12:55:16,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:16,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:16,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:16,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:16,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577014510] [2022-12-13 12:55:16,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577014510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:16,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:16,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:55:16,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241612548] [2022-12-13 12:55:16,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:16,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:55:16,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:16,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:55:16,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:55:16,740 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 159 [2022-12-13 12:55:16,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 101 flow. Second operand has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:16,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 159 [2022-12-13 12:55:16,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:16,863 INFO L130 PetriNetUnfolder]: 96/166 cut-off events. [2022-12-13 12:55:16,863 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-12-13 12:55:16,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 166 events. 96/166 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 470 event pairs, 11 based on Foata normal form. 1/167 useless extension candidates. Maximal degree in co-relation 499. Up to 69 conditions per place. [2022-12-13 12:55:16,865 INFO L137 encePairwiseOnDemand]: 151/159 looper letters, 39 selfloop transitions, 14 changer transitions 5/58 dead transitions. [2022-12-13 12:55:16,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 58 transitions, 333 flow [2022-12-13 12:55:16,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:55:16,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:55:16,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 512 transitions. [2022-12-13 12:55:16,868 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46001796945193174 [2022-12-13 12:55:16,868 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 512 transitions. [2022-12-13 12:55:16,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 512 transitions. [2022-12-13 12:55:16,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:16,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 512 transitions. [2022-12-13 12:55:16,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,873 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,874 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 101 flow. Second operand 7 states and 512 transitions. [2022-12-13 12:55:16,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 58 transitions, 333 flow [2022-12-13 12:55:16,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 58 transitions, 325 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:16,876 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 198 flow [2022-12-13 12:55:16,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2022-12-13 12:55:16,877 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 16 predicate places. [2022-12-13 12:55:16,877 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 198 flow [2022-12-13 12:55:16,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:16,878 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:16,878 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:16,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:55:16,878 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:55:16,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:16,879 INFO L85 PathProgramCache]: Analyzing trace with hash 869862736, now seen corresponding path program 3 times [2022-12-13 12:55:16,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:16,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946076066] [2022-12-13 12:55:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:16,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:17,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:17,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946076066] [2022-12-13 12:55:17,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946076066] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:17,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:17,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:55:17,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826921812] [2022-12-13 12:55:17,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:17,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:55:17,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:17,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:55:17,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:55:17,099 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 159 [2022-12-13 12:55:17,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:17,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 159 [2022-12-13 12:55:17,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:17,240 INFO L130 PetriNetUnfolder]: 113/191 cut-off events. [2022-12-13 12:55:17,240 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2022-12-13 12:55:17,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 191 events. 113/191 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 543 event pairs, 8 based on Foata normal form. 1/192 useless extension candidates. Maximal degree in co-relation 760. Up to 108 conditions per place. [2022-12-13 12:55:17,244 INFO L137 encePairwiseOnDemand]: 151/159 looper letters, 35 selfloop transitions, 21 changer transitions 5/61 dead transitions. [2022-12-13 12:55:17,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 61 transitions, 465 flow [2022-12-13 12:55:17,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:55:17,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:55:17,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 498 transitions. [2022-12-13 12:55:17,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4474393530997305 [2022-12-13 12:55:17,247 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 498 transitions. [2022-12-13 12:55:17,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 498 transitions. [2022-12-13 12:55:17,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:17,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 498 transitions. [2022-12-13 12:55:17,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,255 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,255 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 198 flow. Second operand 7 states and 498 transitions. [2022-12-13 12:55:17,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 61 transitions, 465 flow [2022-12-13 12:55:17,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 61 transitions, 425 flow, removed 14 selfloop flow, removed 2 redundant places. [2022-12-13 12:55:17,261 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 329 flow [2022-12-13 12:55:17,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=329, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2022-12-13 12:55:17,262 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 23 predicate places. [2022-12-13 12:55:17,262 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 329 flow [2022-12-13 12:55:17,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:17,263 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:17,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:55:17,263 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:55:17,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:17,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1950393096, now seen corresponding path program 4 times [2022-12-13 12:55:17,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:17,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685376525] [2022-12-13 12:55:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:17,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:17,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:17,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685376525] [2022-12-13 12:55:17,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685376525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:17,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:17,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:55:17,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624261262] [2022-12-13 12:55:17,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:17,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:55:17,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:17,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:55:17,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:55:17,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 159 [2022-12-13 12:55:17,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 329 flow. Second operand has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:17,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 159 [2022-12-13 12:55:17,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:17,615 INFO L130 PetriNetUnfolder]: 112/192 cut-off events. [2022-12-13 12:55:17,616 INFO L131 PetriNetUnfolder]: For 412/412 co-relation queries the response was YES. [2022-12-13 12:55:17,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 192 events. 112/192 cut-off events. For 412/412 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 564 event pairs, 13 based on Foata normal form. 1/193 useless extension candidates. Maximal degree in co-relation 835. Up to 115 conditions per place. [2022-12-13 12:55:17,618 INFO L137 encePairwiseOnDemand]: 151/159 looper letters, 36 selfloop transitions, 23 changer transitions 5/64 dead transitions. [2022-12-13 12:55:17,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 543 flow [2022-12-13 12:55:17,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:55:17,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:55:17,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 507 transitions. [2022-12-13 12:55:17,620 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4555256064690027 [2022-12-13 12:55:17,621 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 507 transitions. [2022-12-13 12:55:17,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 507 transitions. [2022-12-13 12:55:17,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:17,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 507 transitions. [2022-12-13 12:55:17,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,625 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,625 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 329 flow. Second operand 7 states and 507 transitions. [2022-12-13 12:55:17,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 543 flow [2022-12-13 12:55:17,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 517 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-13 12:55:17,630 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 406 flow [2022-12-13 12:55:17,630 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2022-12-13 12:55:17,630 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 30 predicate places. [2022-12-13 12:55:17,631 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 406 flow [2022-12-13 12:55:17,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:17,631 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:17,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:55:17,631 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:55:17,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:17,632 INFO L85 PathProgramCache]: Analyzing trace with hash -287112144, now seen corresponding path program 5 times [2022-12-13 12:55:17,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:17,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289145372] [2022-12-13 12:55:17,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:17,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:17,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:17,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289145372] [2022-12-13 12:55:17,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289145372] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:17,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:17,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:55:17,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222227213] [2022-12-13 12:55:17,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:17,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:55:17,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:17,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:55:17,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:55:17,833 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 159 [2022-12-13 12:55:17,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 406 flow. Second operand has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:17,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 159 [2022-12-13 12:55:17,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:17,954 INFO L130 PetriNetUnfolder]: 131/221 cut-off events. [2022-12-13 12:55:17,954 INFO L131 PetriNetUnfolder]: For 592/592 co-relation queries the response was YES. [2022-12-13 12:55:17,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 221 events. 131/221 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 670 event pairs, 8 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 1044. Up to 126 conditions per place. [2022-12-13 12:55:17,957 INFO L137 encePairwiseOnDemand]: 151/159 looper letters, 42 selfloop transitions, 28 changer transitions 6/76 dead transitions. [2022-12-13 12:55:17,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 724 flow [2022-12-13 12:55:17,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:55:17,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:55:17,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 500 transitions. [2022-12-13 12:55:17,959 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44923629829290207 [2022-12-13 12:55:17,959 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 500 transitions. [2022-12-13 12:55:17,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 500 transitions. [2022-12-13 12:55:17,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:17,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 500 transitions. [2022-12-13 12:55:17,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,963 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,963 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 406 flow. Second operand 7 states and 500 transitions. [2022-12-13 12:55:17,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 724 flow [2022-12-13 12:55:17,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 76 transitions, 664 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-12-13 12:55:17,969 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 532 flow [2022-12-13 12:55:17,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=532, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2022-12-13 12:55:17,970 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 35 predicate places. [2022-12-13 12:55:17,970 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 532 flow [2022-12-13 12:55:17,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:17,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:17,970 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:17,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:55:17,971 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:55:17,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:17,971 INFO L85 PathProgramCache]: Analyzing trace with hash -994503104, now seen corresponding path program 6 times [2022-12-13 12:55:17,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:17,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938284402] [2022-12-13 12:55:17,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:17,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:18,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:18,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:18,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938284402] [2022-12-13 12:55:18,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938284402] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:18,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:18,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:55:18,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203515978] [2022-12-13 12:55:18,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:18,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:55:18,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:18,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:55:18,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:55:18,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 159 [2022-12-13 12:55:18,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 532 flow. Second operand has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:18,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 159 [2022-12-13 12:55:18,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:18,284 INFO L130 PetriNetUnfolder]: 126/218 cut-off events. [2022-12-13 12:55:18,284 INFO L131 PetriNetUnfolder]: For 897/897 co-relation queries the response was YES. [2022-12-13 12:55:18,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 218 events. 126/218 cut-off events. For 897/897 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 677 event pairs, 18 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 1126. Up to 136 conditions per place. [2022-12-13 12:55:18,287 INFO L137 encePairwiseOnDemand]: 151/159 looper letters, 39 selfloop transitions, 29 changer transitions 5/73 dead transitions. [2022-12-13 12:55:18,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 773 flow [2022-12-13 12:55:18,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:55:18,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:55:18,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 505 transitions. [2022-12-13 12:55:18,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4537286612758311 [2022-12-13 12:55:18,289 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 505 transitions. [2022-12-13 12:55:18,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 505 transitions. [2022-12-13 12:55:18,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:18,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 505 transitions. [2022-12-13 12:55:18,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,293 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,293 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 532 flow. Second operand 7 states and 505 transitions. [2022-12-13 12:55:18,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 773 flow [2022-12-13 12:55:18,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 73 transitions, 731 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-12-13 12:55:18,299 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 613 flow [2022-12-13 12:55:18,299 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=613, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2022-12-13 12:55:18,300 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 42 predicate places. [2022-12-13 12:55:18,300 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 613 flow [2022-12-13 12:55:18,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:18,301 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:18,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:55:18,301 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:55:18,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:18,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1255003140, now seen corresponding path program 1 times [2022-12-13 12:55:18,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:18,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210249534] [2022-12-13 12:55:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:18,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:18,340 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 12:55:18,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:18,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210249534] [2022-12-13 12:55:18,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210249534] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:55:18,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370210795] [2022-12-13 12:55:18,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:18,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:55:18,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:55:18,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:55:18,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:55:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:18,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:55:18,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:55:18,430 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 12:55:18,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:55:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:18,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370210795] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 12:55:18,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:55:18,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2022-12-13 12:55:18,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103386046] [2022-12-13 12:55:18,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:18,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:55:18,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:18,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:55:18,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:55:18,495 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 159 [2022-12-13 12:55:18,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 613 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:18,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 159 [2022-12-13 12:55:18,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:18,592 INFO L130 PetriNetUnfolder]: 133/234 cut-off events. [2022-12-13 12:55:18,592 INFO L131 PetriNetUnfolder]: For 1077/1077 co-relation queries the response was YES. [2022-12-13 12:55:18,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 234 events. 133/234 cut-off events. For 1077/1077 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 755 event pairs, 10 based on Foata normal form. 8/242 useless extension candidates. Maximal degree in co-relation 1219. Up to 101 conditions per place. [2022-12-13 12:55:18,596 INFO L137 encePairwiseOnDemand]: 154/159 looper letters, 62 selfloop transitions, 19 changer transitions 0/81 dead transitions. [2022-12-13 12:55:18,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 81 transitions, 895 flow [2022-12-13 12:55:18,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:55:18,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:55:18,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 370 transitions. [2022-12-13 12:55:18,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46540880503144655 [2022-12-13 12:55:18,598 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 370 transitions. [2022-12-13 12:55:18,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 370 transitions. [2022-12-13 12:55:18,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:18,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 370 transitions. [2022-12-13 12:55:18,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,602 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,602 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 613 flow. Second operand 5 states and 370 transitions. [2022-12-13 12:55:18,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 81 transitions, 895 flow [2022-12-13 12:55:18,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 81 transitions, 819 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-12-13 12:55:18,610 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 636 flow [2022-12-13 12:55:18,611 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=636, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2022-12-13 12:55:18,611 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 43 predicate places. [2022-12-13 12:55:18,611 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 636 flow [2022-12-13 12:55:18,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,612 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:18,612 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:18,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:55:18,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 12:55:18,814 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:55:18,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:18,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1316043981, now seen corresponding path program 1 times [2022-12-13 12:55:18,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:18,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082916295] [2022-12-13 12:55:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:18,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:18,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:18,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082916295] [2022-12-13 12:55:18,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082916295] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:18,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:18,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:55:18,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503634409] [2022-12-13 12:55:18,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:18,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:55:18,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:18,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:55:18,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:55:18,998 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 159 [2022-12-13 12:55:18,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 636 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:18,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:18,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 159 [2022-12-13 12:55:18,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:19,110 INFO L130 PetriNetUnfolder]: 129/230 cut-off events. [2022-12-13 12:55:19,110 INFO L131 PetriNetUnfolder]: For 1417/1417 co-relation queries the response was YES. [2022-12-13 12:55:19,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 230 events. 129/230 cut-off events. For 1417/1417 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 746 event pairs, 17 based on Foata normal form. 4/234 useless extension candidates. Maximal degree in co-relation 1122. Up to 97 conditions per place. [2022-12-13 12:55:19,112 INFO L137 encePairwiseOnDemand]: 153/159 looper letters, 50 selfloop transitions, 28 changer transitions 4/82 dead transitions. [2022-12-13 12:55:19,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 82 transitions, 882 flow [2022-12-13 12:55:19,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:55:19,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:55:19,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 508 transitions. [2022-12-13 12:55:19,114 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4564240790655885 [2022-12-13 12:55:19,114 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 508 transitions. [2022-12-13 12:55:19,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 508 transitions. [2022-12-13 12:55:19,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:19,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 508 transitions. [2022-12-13 12:55:19,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,118 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,118 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 636 flow. Second operand 7 states and 508 transitions. [2022-12-13 12:55:19,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 82 transitions, 882 flow [2022-12-13 12:55:19,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 82 transitions, 841 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-12-13 12:55:19,122 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 648 flow [2022-12-13 12:55:19,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=648, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2022-12-13 12:55:19,123 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 47 predicate places. [2022-12-13 12:55:19,123 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 648 flow [2022-12-13 12:55:19,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:19,124 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:19,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:55:19,124 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:55:19,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:19,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2001903354, now seen corresponding path program 2 times [2022-12-13 12:55:19,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:19,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373545932] [2022-12-13 12:55:19,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:19,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:19,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:19,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373545932] [2022-12-13 12:55:19,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373545932] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:19,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:19,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:55:19,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593640969] [2022-12-13 12:55:19,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:19,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:55:19,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:19,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:55:19,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:55:19,181 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 159 [2022-12-13 12:55:19,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 648 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:19,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 159 [2022-12-13 12:55:19,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:19,285 INFO L130 PetriNetUnfolder]: 141/256 cut-off events. [2022-12-13 12:55:19,285 INFO L131 PetriNetUnfolder]: For 1508/1508 co-relation queries the response was YES. [2022-12-13 12:55:19,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1450 conditions, 256 events. 141/256 cut-off events. For 1508/1508 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 868 event pairs, 10 based on Foata normal form. 4/260 useless extension candidates. Maximal degree in co-relation 1375. Up to 85 conditions per place. [2022-12-13 12:55:19,288 INFO L137 encePairwiseOnDemand]: 153/159 looper letters, 54 selfloop transitions, 27 changer transitions 1/82 dead transitions. [2022-12-13 12:55:19,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 82 transitions, 966 flow [2022-12-13 12:55:19,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:55:19,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:55:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 437 transitions. [2022-12-13 12:55:19,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4580712788259958 [2022-12-13 12:55:19,289 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 437 transitions. [2022-12-13 12:55:19,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 437 transitions. [2022-12-13 12:55:19,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:19,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 437 transitions. [2022-12-13 12:55:19,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,291 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,291 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 648 flow. Second operand 6 states and 437 transitions. [2022-12-13 12:55:19,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 82 transitions, 966 flow [2022-12-13 12:55:19,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 82 transitions, 893 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-12-13 12:55:19,297 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 731 flow [2022-12-13 12:55:19,297 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=731, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2022-12-13 12:55:19,297 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 50 predicate places. [2022-12-13 12:55:19,298 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 731 flow [2022-12-13 12:55:19,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:19,298 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:19,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:55:19,298 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:55:19,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:19,299 INFO L85 PathProgramCache]: Analyzing trace with hash 574125590, now seen corresponding path program 3 times [2022-12-13 12:55:19,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:19,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711874771] [2022-12-13 12:55:19,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:19,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:19,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:19,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:19,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711874771] [2022-12-13 12:55:19,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711874771] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:19,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:19,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:55:19,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673592013] [2022-12-13 12:55:19,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:19,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:55:19,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:19,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:55:19,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:55:19,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 159 [2022-12-13 12:55:19,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 731 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:19,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 159 [2022-12-13 12:55:19,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:19,466 INFO L130 PetriNetUnfolder]: 143/262 cut-off events. [2022-12-13 12:55:19,467 INFO L131 PetriNetUnfolder]: For 2008/2008 co-relation queries the response was YES. [2022-12-13 12:55:19,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 262 events. 143/262 cut-off events. For 2008/2008 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 906 event pairs, 12 based on Foata normal form. 6/268 useless extension candidates. Maximal degree in co-relation 1449. Up to 200 conditions per place. [2022-12-13 12:55:19,470 INFO L137 encePairwiseOnDemand]: 154/159 looper letters, 56 selfloop transitions, 19 changer transitions 0/75 dead transitions. [2022-12-13 12:55:19,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 75 transitions, 931 flow [2022-12-13 12:55:19,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:55:19,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:55:19,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 364 transitions. [2022-12-13 12:55:19,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4578616352201258 [2022-12-13 12:55:19,472 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 364 transitions. [2022-12-13 12:55:19,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 364 transitions. [2022-12-13 12:55:19,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:19,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 364 transitions. [2022-12-13 12:55:19,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,473 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,473 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 731 flow. Second operand 5 states and 364 transitions. [2022-12-13 12:55:19,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 75 transitions, 931 flow [2022-12-13 12:55:19,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 856 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-12-13 12:55:19,479 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 699 flow [2022-12-13 12:55:19,479 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=699, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2022-12-13 12:55:19,479 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 48 predicate places. [2022-12-13 12:55:19,479 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 699 flow [2022-12-13 12:55:19,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:19,480 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:19,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:55:19,480 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 12:55:19,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:19,480 INFO L85 PathProgramCache]: Analyzing trace with hash -672659899, now seen corresponding path program 2 times [2022-12-13 12:55:19,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:19,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880238652] [2022-12-13 12:55:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:19,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:19,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:19,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:19,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880238652] [2022-12-13 12:55:19,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880238652] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:19,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:19,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:55:19,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672112627] [2022-12-13 12:55:19,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:19,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:55:19,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:19,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:55:19,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:55:19,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 159 [2022-12-13 12:55:19,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 699 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:19,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 159 [2022-12-13 12:55:19,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:19,649 INFO L130 PetriNetUnfolder]: 155/288 cut-off events. [2022-12-13 12:55:19,649 INFO L131 PetriNetUnfolder]: For 1796/1796 co-relation queries the response was YES. [2022-12-13 12:55:19,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 288 events. 155/288 cut-off events. For 1796/1796 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1040 event pairs, 35 based on Foata normal form. 4/292 useless extension candidates. Maximal degree in co-relation 1537. Up to 173 conditions per place. [2022-12-13 12:55:19,653 INFO L137 encePairwiseOnDemand]: 154/159 looper letters, 68 selfloop transitions, 17 changer transitions 0/85 dead transitions. [2022-12-13 12:55:19,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 85 transitions, 985 flow [2022-12-13 12:55:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:55:19,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:55:19,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 372 transitions. [2022-12-13 12:55:19,656 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4679245283018868 [2022-12-13 12:55:19,656 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 372 transitions. [2022-12-13 12:55:19,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 372 transitions. [2022-12-13 12:55:19,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:19,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 372 transitions. [2022-12-13 12:55:19,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,660 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,660 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 699 flow. Second operand 5 states and 372 transitions. [2022-12-13 12:55:19,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 85 transitions, 985 flow [2022-12-13 12:55:19,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 85 transitions, 951 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-13 12:55:19,670 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 724 flow [2022-12-13 12:55:19,670 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=724, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2022-12-13 12:55:19,671 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 51 predicate places. [2022-12-13 12:55:19,671 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 724 flow [2022-12-13 12:55:19,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,671 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:19,671 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:19,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:55:19,672 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 12:55:19,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:19,672 INFO L85 PathProgramCache]: Analyzing trace with hash -334714639, now seen corresponding path program 3 times [2022-12-13 12:55:19,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:19,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747433971] [2022-12-13 12:55:19,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:19,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:19,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:19,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:19,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747433971] [2022-12-13 12:55:19,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747433971] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:19,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:19,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:55:19,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768469780] [2022-12-13 12:55:19,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:19,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:55:19,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:19,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:55:19,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:55:19,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 159 [2022-12-13 12:55:19,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 724 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:19,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 159 [2022-12-13 12:55:19,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:19,866 INFO L130 PetriNetUnfolder]: 150/283 cut-off events. [2022-12-13 12:55:19,867 INFO L131 PetriNetUnfolder]: For 1658/1658 co-relation queries the response was YES. [2022-12-13 12:55:19,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 283 events. 150/283 cut-off events. For 1658/1658 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1030 event pairs, 25 based on Foata normal form. 4/287 useless extension candidates. Maximal degree in co-relation 1463. Up to 127 conditions per place. [2022-12-13 12:55:19,870 INFO L137 encePairwiseOnDemand]: 153/159 looper letters, 65 selfloop transitions, 26 changer transitions 3/94 dead transitions. [2022-12-13 12:55:19,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 94 transitions, 1050 flow [2022-12-13 12:55:19,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:55:19,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 12:55:19,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 583 transitions. [2022-12-13 12:55:19,871 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2022-12-13 12:55:19,871 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 583 transitions. [2022-12-13 12:55:19,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 583 transitions. [2022-12-13 12:55:19,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:19,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 583 transitions. [2022-12-13 12:55:19,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.875) internal successors, (583), 8 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,874 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,874 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 724 flow. Second operand 8 states and 583 transitions. [2022-12-13 12:55:19,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 94 transitions, 1050 flow [2022-12-13 12:55:19,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 94 transitions, 1029 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 12:55:19,879 INFO L231 Difference]: Finished difference. Result has 77 places, 65 transitions, 761 flow [2022-12-13 12:55:19,879 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=761, PETRI_PLACES=77, PETRI_TRANSITIONS=65} [2022-12-13 12:55:19,879 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 57 predicate places. [2022-12-13 12:55:19,880 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 65 transitions, 761 flow [2022-12-13 12:55:19,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:19,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:19,880 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:19,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 12:55:19,880 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 12:55:19,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:19,880 INFO L85 PathProgramCache]: Analyzing trace with hash 932133313, now seen corresponding path program 4 times [2022-12-13 12:55:19,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:19,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449086976] [2022-12-13 12:55:19,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:19,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:19,914 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 12:55:19,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:19,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449086976] [2022-12-13 12:55:19,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449086976] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:55:19,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458701125] [2022-12-13 12:55:19,915 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:55:19,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:55:19,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:55:19,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:55:19,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:55:19,963 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:55:19,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:55:19,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:55:19,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:55:19,974 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 12:55:19,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:55:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:20,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458701125] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 12:55:20,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:55:20,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2022-12-13 12:55:20,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159530745] [2022-12-13 12:55:20,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:20,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:55:20,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:20,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:55:20,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:55:20,033 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 159 [2022-12-13 12:55:20,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 761 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:20,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 159 [2022-12-13 12:55:20,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:20,137 INFO L130 PetriNetUnfolder]: 141/268 cut-off events. [2022-12-13 12:55:20,138 INFO L131 PetriNetUnfolder]: For 1769/1769 co-relation queries the response was YES. [2022-12-13 12:55:20,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1559 conditions, 268 events. 141/268 cut-off events. For 1769/1769 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 960 event pairs, 9 based on Foata normal form. 4/272 useless extension candidates. Maximal degree in co-relation 1465. Up to 138 conditions per place. [2022-12-13 12:55:20,140 INFO L137 encePairwiseOnDemand]: 153/159 looper letters, 59 selfloop transitions, 24 changer transitions 0/83 dead transitions. [2022-12-13 12:55:20,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 83 transitions, 1012 flow [2022-12-13 12:55:20,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:55:20,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:55:20,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 370 transitions. [2022-12-13 12:55:20,142 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46540880503144655 [2022-12-13 12:55:20,142 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 370 transitions. [2022-12-13 12:55:20,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 370 transitions. [2022-12-13 12:55:20,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:20,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 370 transitions. [2022-12-13 12:55:20,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,145 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,145 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 761 flow. Second operand 5 states and 370 transitions. [2022-12-13 12:55:20,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 83 transitions, 1012 flow [2022-12-13 12:55:20,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 83 transitions, 966 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-12-13 12:55:20,154 INFO L231 Difference]: Finished difference. Result has 79 places, 66 transitions, 779 flow [2022-12-13 12:55:20,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=779, PETRI_PLACES=79, PETRI_TRANSITIONS=66} [2022-12-13 12:55:20,155 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 59 predicate places. [2022-12-13 12:55:20,155 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 779 flow [2022-12-13 12:55:20,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:20,155 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:20,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:55:20,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 12:55:20,356 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 12:55:20,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:20,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2115242316, now seen corresponding path program 4 times [2022-12-13 12:55:20,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:20,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494634537] [2022-12-13 12:55:20,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:20,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:20,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:20,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494634537] [2022-12-13 12:55:20,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494634537] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:20,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:20,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:55:20,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198268638] [2022-12-13 12:55:20,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:20,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:55:20,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:20,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:55:20,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:55:20,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 159 [2022-12-13 12:55:20,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 779 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:20,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 159 [2022-12-13 12:55:20,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:20,509 INFO L130 PetriNetUnfolder]: 141/280 cut-off events. [2022-12-13 12:55:20,509 INFO L131 PetriNetUnfolder]: For 2015/2015 co-relation queries the response was YES. [2022-12-13 12:55:20,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1588 conditions, 280 events. 141/280 cut-off events. For 2015/2015 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1054 event pairs, 35 based on Foata normal form. 6/286 useless extension candidates. Maximal degree in co-relation 1493. Up to 199 conditions per place. [2022-12-13 12:55:20,513 INFO L137 encePairwiseOnDemand]: 154/159 looper letters, 59 selfloop transitions, 22 changer transitions 0/81 dead transitions. [2022-12-13 12:55:20,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 81 transitions, 999 flow [2022-12-13 12:55:20,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:55:20,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:55:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 369 transitions. [2022-12-13 12:55:20,515 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4641509433962264 [2022-12-13 12:55:20,515 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 369 transitions. [2022-12-13 12:55:20,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 369 transitions. [2022-12-13 12:55:20,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:20,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 369 transitions. [2022-12-13 12:55:20,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,519 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,520 INFO L175 Difference]: Start difference. First operand has 79 places, 66 transitions, 779 flow. Second operand 5 states and 369 transitions. [2022-12-13 12:55:20,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 81 transitions, 999 flow [2022-12-13 12:55:20,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 989 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:20,530 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 839 flow [2022-12-13 12:55:20,530 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=839, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2022-12-13 12:55:20,531 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 64 predicate places. [2022-12-13 12:55:20,531 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 839 flow [2022-12-13 12:55:20,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,531 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:20,531 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:20,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 12:55:20,532 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 12:55:20,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:20,532 INFO L85 PathProgramCache]: Analyzing trace with hash -460786628, now seen corresponding path program 5 times [2022-12-13 12:55:20,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:20,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747651863] [2022-12-13 12:55:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:20,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:20,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:20,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:20,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747651863] [2022-12-13 12:55:20,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747651863] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:20,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:20,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:55:20,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140284553] [2022-12-13 12:55:20,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:20,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:55:20,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:20,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:55:20,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:55:20,591 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 159 [2022-12-13 12:55:20,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 839 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:20,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 159 [2022-12-13 12:55:20,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:20,711 INFO L130 PetriNetUnfolder]: 139/278 cut-off events. [2022-12-13 12:55:20,711 INFO L131 PetriNetUnfolder]: For 1969/1969 co-relation queries the response was YES. [2022-12-13 12:55:20,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 278 events. 139/278 cut-off events. For 1969/1969 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1068 event pairs, 17 based on Foata normal form. 2/280 useless extension candidates. Maximal degree in co-relation 1535. Up to 91 conditions per place. [2022-12-13 12:55:20,714 INFO L137 encePairwiseOnDemand]: 153/159 looper letters, 57 selfloop transitions, 31 changer transitions 1/89 dead transitions. [2022-12-13 12:55:20,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 89 transitions, 1102 flow [2022-12-13 12:55:20,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:55:20,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 12:55:20,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 578 transitions. [2022-12-13 12:55:20,716 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45440251572327045 [2022-12-13 12:55:20,716 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 578 transitions. [2022-12-13 12:55:20,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 578 transitions. [2022-12-13 12:55:20,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:20,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 578 transitions. [2022-12-13 12:55:20,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.25) internal successors, (578), 8 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,720 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,720 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 839 flow. Second operand 8 states and 578 transitions. [2022-12-13 12:55:20,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 89 transitions, 1102 flow [2022-12-13 12:55:20,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 89 transitions, 1075 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-12-13 12:55:20,730 INFO L231 Difference]: Finished difference. Result has 90 places, 66 transitions, 841 flow [2022-12-13 12:55:20,731 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=841, PETRI_PLACES=90, PETRI_TRANSITIONS=66} [2022-12-13 12:55:20,731 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 70 predicate places. [2022-12-13 12:55:20,731 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 66 transitions, 841 flow [2022-12-13 12:55:20,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,731 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:20,732 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:20,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 12:55:20,732 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 12:55:20,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:20,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1206402087, now seen corresponding path program 5 times [2022-12-13 12:55:20,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:20,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076472325] [2022-12-13 12:55:20,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:20,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:20,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:20,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076472325] [2022-12-13 12:55:20,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076472325] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:20,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:20,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:55:20,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395127454] [2022-12-13 12:55:20,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:20,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:55:20,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:20,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:55:20,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:55:20,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 159 [2022-12-13 12:55:20,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 66 transitions, 841 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:20,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 159 [2022-12-13 12:55:20,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:20,895 INFO L130 PetriNetUnfolder]: 124/251 cut-off events. [2022-12-13 12:55:20,895 INFO L131 PetriNetUnfolder]: For 1941/1941 co-relation queries the response was YES. [2022-12-13 12:55:20,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1534 conditions, 251 events. 124/251 cut-off events. For 1941/1941 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 919 event pairs, 9 based on Foata normal form. 8/259 useless extension candidates. Maximal degree in co-relation 1407. Up to 116 conditions per place. [2022-12-13 12:55:20,899 INFO L137 encePairwiseOnDemand]: 153/159 looper letters, 57 selfloop transitions, 20 changer transitions 2/79 dead transitions. [2022-12-13 12:55:20,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 79 transitions, 1044 flow [2022-12-13 12:55:20,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:55:20,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:55:20,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 436 transitions. [2022-12-13 12:55:20,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4570230607966457 [2022-12-13 12:55:20,900 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 436 transitions. [2022-12-13 12:55:20,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 436 transitions. [2022-12-13 12:55:20,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:20,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 436 transitions. [2022-12-13 12:55:20,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.66666666666667) internal successors, (436), 6 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,902 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,902 INFO L175 Difference]: Start difference. First operand has 90 places, 66 transitions, 841 flow. Second operand 6 states and 436 transitions. [2022-12-13 12:55:20,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 79 transitions, 1044 flow [2022-12-13 12:55:20,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 79 transitions, 987 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-12-13 12:55:20,908 INFO L231 Difference]: Finished difference. Result has 90 places, 61 transitions, 759 flow [2022-12-13 12:55:20,908 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=759, PETRI_PLACES=90, PETRI_TRANSITIONS=61} [2022-12-13 12:55:20,909 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 70 predicate places. [2022-12-13 12:55:20,909 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 61 transitions, 759 flow [2022-12-13 12:55:20,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:20,909 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:20,909 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:20,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 12:55:20,909 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 12:55:20,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:20,910 INFO L85 PathProgramCache]: Analyzing trace with hash 881387879, now seen corresponding path program 6 times [2022-12-13 12:55:20,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:20,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267695778] [2022-12-13 12:55:20,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:20,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:20,937 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 12:55:20,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:20,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267695778] [2022-12-13 12:55:20,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267695778] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:55:20,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683522493] [2022-12-13 12:55:20,938 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:55:20,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:55:20,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:55:20,939 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:55:20,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:55:20,996 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-13 12:55:20,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:55:20,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:55:20,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:55:21,006 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 12:55:21,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:55:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:21,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683522493] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 12:55:21,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:55:21,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2022-12-13 12:55:21,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063202591] [2022-12-13 12:55:21,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:21,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:55:21,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:21,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:55:21,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:55:21,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 159 [2022-12-13 12:55:21,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 61 transitions, 759 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:21,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:21,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 159 [2022-12-13 12:55:21,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:21,122 INFO L130 PetriNetUnfolder]: 127/244 cut-off events. [2022-12-13 12:55:21,122 INFO L131 PetriNetUnfolder]: For 1870/1870 co-relation queries the response was YES. [2022-12-13 12:55:21,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 244 events. 127/244 cut-off events. For 1870/1870 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 831 event pairs, 11 based on Foata normal form. 2/246 useless extension candidates. Maximal degree in co-relation 1423. Up to 124 conditions per place. [2022-12-13 12:55:21,124 INFO L137 encePairwiseOnDemand]: 154/159 looper letters, 53 selfloop transitions, 22 changer transitions 0/75 dead transitions. [2022-12-13 12:55:21,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 75 transitions, 990 flow [2022-12-13 12:55:21,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:55:21,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:55:21,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 366 transitions. [2022-12-13 12:55:21,126 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46037735849056605 [2022-12-13 12:55:21,126 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 366 transitions. [2022-12-13 12:55:21,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 366 transitions. [2022-12-13 12:55:21,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:21,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 366 transitions. [2022-12-13 12:55:21,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:21,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:21,129 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:21,129 INFO L175 Difference]: Start difference. First operand has 90 places, 61 transitions, 759 flow. Second operand 5 states and 366 transitions. [2022-12-13 12:55:21,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 75 transitions, 990 flow [2022-12-13 12:55:21,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 75 transitions, 932 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-12-13 12:55:21,134 INFO L231 Difference]: Finished difference. Result has 85 places, 62 transitions, 768 flow [2022-12-13 12:55:21,134 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=768, PETRI_PLACES=85, PETRI_TRANSITIONS=62} [2022-12-13 12:55:21,134 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 65 predicate places. [2022-12-13 12:55:21,134 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 62 transitions, 768 flow [2022-12-13 12:55:21,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:21,135 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:21,135 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:21,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 12:55:21,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 12:55:21,335 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 12:55:21,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:21,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1389829386, now seen corresponding path program 6 times [2022-12-13 12:55:21,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:21,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520797296] [2022-12-13 12:55:21,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:21,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:21,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:21,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:21,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520797296] [2022-12-13 12:55:21,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520797296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:21,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:21,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:55:21,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2772832] [2022-12-13 12:55:21,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:21,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:55:21,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:21,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:55:21,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:55:21,480 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 159 [2022-12-13 12:55:21,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 62 transitions, 768 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:21,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:21,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 159 [2022-12-13 12:55:21,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:21,581 INFO L130 PetriNetUnfolder]: 123/232 cut-off events. [2022-12-13 12:55:21,581 INFO L131 PetriNetUnfolder]: For 1766/1766 co-relation queries the response was YES. [2022-12-13 12:55:21,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1416 conditions, 232 events. 123/232 cut-off events. For 1766/1766 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 763 event pairs, 25 based on Foata normal form. 2/234 useless extension candidates. Maximal degree in co-relation 1353. Up to 101 conditions per place. [2022-12-13 12:55:21,583 INFO L137 encePairwiseOnDemand]: 153/159 looper letters, 45 selfloop transitions, 22 changer transitions 4/71 dead transitions. [2022-12-13 12:55:21,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 71 transitions, 931 flow [2022-12-13 12:55:21,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:55:21,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:55:21,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 497 transitions. [2022-12-13 12:55:21,584 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44654088050314467 [2022-12-13 12:55:21,584 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 497 transitions. [2022-12-13 12:55:21,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 497 transitions. [2022-12-13 12:55:21,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:21,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 497 transitions. [2022-12-13 12:55:21,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.0) internal successors, (497), 7 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:21,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:21,586 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:21,586 INFO L175 Difference]: Start difference. First operand has 85 places, 62 transitions, 768 flow. Second operand 7 states and 497 transitions. [2022-12-13 12:55:21,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 71 transitions, 931 flow [2022-12-13 12:55:21,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 71 transitions, 880 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-12-13 12:55:21,591 INFO L231 Difference]: Finished difference. Result has 85 places, 58 transitions, 713 flow [2022-12-13 12:55:21,591 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=713, PETRI_PLACES=85, PETRI_TRANSITIONS=58} [2022-12-13 12:55:21,592 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 65 predicate places. [2022-12-13 12:55:21,592 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 58 transitions, 713 flow [2022-12-13 12:55:21,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:21,592 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:21,592 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:21,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 12:55:21,592 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:55:21,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:21,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1455818237, now seen corresponding path program 1 times [2022-12-13 12:55:21,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:21,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628687816] [2022-12-13 12:55:21,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:21,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:21,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:21,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628687816] [2022-12-13 12:55:21,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628687816] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:55:21,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176666297] [2022-12-13 12:55:21,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:21,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:55:21,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:55:21,695 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:55:21,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:55:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:21,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 12:55:21,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:55:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:21,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:55:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:22,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176666297] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:55:22,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:55:22,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-13 12:55:22,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25508695] [2022-12-13 12:55:22,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:55:22,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:55:22,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:22,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:55:22,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:55:22,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 159 [2022-12-13 12:55:22,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 58 transitions, 713 flow. Second operand has 19 states, 19 states have (on average 64.94736842105263) internal successors, (1234), 19 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:22,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:22,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 159 [2022-12-13 12:55:22,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:22,679 INFO L130 PetriNetUnfolder]: 121/225 cut-off events. [2022-12-13 12:55:22,679 INFO L131 PetriNetUnfolder]: For 1569/1569 co-relation queries the response was YES. [2022-12-13 12:55:22,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1386 conditions, 225 events. 121/225 cut-off events. For 1569/1569 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 728 event pairs, 2 based on Foata normal form. 1/226 useless extension candidates. Maximal degree in co-relation 1205. Up to 51 conditions per place. [2022-12-13 12:55:22,682 INFO L137 encePairwiseOnDemand]: 151/159 looper letters, 41 selfloop transitions, 22 changer transitions 26/89 dead transitions. [2022-12-13 12:55:22,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 89 transitions, 1035 flow [2022-12-13 12:55:22,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:55:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 12:55:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 752 transitions. [2022-12-13 12:55:22,684 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42995997712978845 [2022-12-13 12:55:22,684 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 752 transitions. [2022-12-13 12:55:22,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 752 transitions. [2022-12-13 12:55:22,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:22,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 752 transitions. [2022-12-13 12:55:22,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 68.36363636363636) internal successors, (752), 11 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:22,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 159.0) internal successors, (1908), 12 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:22,687 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 159.0) internal successors, (1908), 12 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:22,687 INFO L175 Difference]: Start difference. First operand has 85 places, 58 transitions, 713 flow. Second operand 11 states and 752 transitions. [2022-12-13 12:55:22,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 89 transitions, 1035 flow [2022-12-13 12:55:22,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 989 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 12:55:22,692 INFO L231 Difference]: Finished difference. Result has 88 places, 47 transitions, 596 flow [2022-12-13 12:55:22,692 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=596, PETRI_PLACES=88, PETRI_TRANSITIONS=47} [2022-12-13 12:55:22,692 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 68 predicate places. [2022-12-13 12:55:22,692 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 47 transitions, 596 flow [2022-12-13 12:55:22,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 64.94736842105263) internal successors, (1234), 19 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:22,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:22,693 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:22,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:55:22,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:55:22,894 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:55:22,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:22,895 INFO L85 PathProgramCache]: Analyzing trace with hash -658458085, now seen corresponding path program 2 times [2022-12-13 12:55:22,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:22,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477276259] [2022-12-13 12:55:22,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:22,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:23,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:23,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477276259] [2022-12-13 12:55:23,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477276259] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:55:23,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44455735] [2022-12-13 12:55:23,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:55:23,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:55:23,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:55:23,098 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:55:23,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:55:23,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:55:23,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:55:23,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 12:55:23,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:55:23,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:23,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:55:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:23,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44455735] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:55:23,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:55:23,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2022-12-13 12:55:23,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196162225] [2022-12-13 12:55:23,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:55:23,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 12:55:23,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:23,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 12:55:23,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-12-13 12:55:23,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 159 [2022-12-13 12:55:23,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 47 transitions, 596 flow. Second operand has 20 states, 20 states have (on average 61.8) internal successors, (1236), 20 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:23,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:23,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 159 [2022-12-13 12:55:23,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:23,975 INFO L130 PetriNetUnfolder]: 95/185 cut-off events. [2022-12-13 12:55:23,976 INFO L131 PetriNetUnfolder]: For 1475/1475 co-relation queries the response was YES. [2022-12-13 12:55:23,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 185 events. 95/185 cut-off events. For 1475/1475 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 560 event pairs, 2 based on Foata normal form. 1/186 useless extension candidates. Maximal degree in co-relation 1144. Up to 45 conditions per place. [2022-12-13 12:55:23,977 INFO L137 encePairwiseOnDemand]: 151/159 looper letters, 45 selfloop transitions, 27 changer transitions 9/81 dead transitions. [2022-12-13 12:55:23,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 81 transitions, 954 flow [2022-12-13 12:55:23,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:55:23,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 12:55:23,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 718 transitions. [2022-12-13 12:55:23,978 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41052029731275014 [2022-12-13 12:55:23,978 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 718 transitions. [2022-12-13 12:55:23,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 718 transitions. [2022-12-13 12:55:23,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:23,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 718 transitions. [2022-12-13 12:55:23,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.27272727272727) internal successors, (718), 11 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:23,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 159.0) internal successors, (1908), 12 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:23,984 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 159.0) internal successors, (1908), 12 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:23,984 INFO L175 Difference]: Start difference. First operand has 88 places, 47 transitions, 596 flow. Second operand 11 states and 718 transitions. [2022-12-13 12:55:23,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 81 transitions, 954 flow [2022-12-13 12:55:23,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 793 flow, removed 12 selfloop flow, removed 16 redundant places. [2022-12-13 12:55:23,988 INFO L231 Difference]: Finished difference. Result has 76 places, 50 transitions, 561 flow [2022-12-13 12:55:23,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=561, PETRI_PLACES=76, PETRI_TRANSITIONS=50} [2022-12-13 12:55:23,989 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 56 predicate places. [2022-12-13 12:55:23,989 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 50 transitions, 561 flow [2022-12-13 12:55:23,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 61.8) internal successors, (1236), 20 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:23,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:23,990 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:23,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 12:55:24,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:55:24,191 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:55:24,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:24,193 INFO L85 PathProgramCache]: Analyzing trace with hash -583500085, now seen corresponding path program 3 times [2022-12-13 12:55:24,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:24,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087640072] [2022-12-13 12:55:24,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:24,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:24,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:24,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:24,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087640072] [2022-12-13 12:55:24,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087640072] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:55:24,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471523101] [2022-12-13 12:55:24,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:55:24,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:55:24,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:55:24,396 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:55:24,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 12:55:24,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 12:55:24,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:55:24,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 12:55:24,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:55:24,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:24,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:55:24,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:24,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471523101] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:55:24,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:55:24,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-13 12:55:24,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061300201] [2022-12-13 12:55:24,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:55:24,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 12:55:24,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:24,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 12:55:24,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-12-13 12:55:24,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 159 [2022-12-13 12:55:24,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 50 transitions, 561 flow. Second operand has 18 states, 18 states have (on average 64.44444444444444) internal successors, (1160), 18 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:24,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:24,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 159 [2022-12-13 12:55:24,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:25,075 INFO L130 PetriNetUnfolder]: 89/180 cut-off events. [2022-12-13 12:55:25,075 INFO L131 PetriNetUnfolder]: For 928/928 co-relation queries the response was YES. [2022-12-13 12:55:25,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042 conditions, 180 events. 89/180 cut-off events. For 928/928 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 547 event pairs, 2 based on Foata normal form. 2/182 useless extension candidates. Maximal degree in co-relation 1020. Up to 45 conditions per place. [2022-12-13 12:55:25,076 INFO L137 encePairwiseOnDemand]: 151/159 looper letters, 33 selfloop transitions, 16 changer transitions 26/75 dead transitions. [2022-12-13 12:55:25,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 75 transitions, 827 flow [2022-12-13 12:55:25,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:55:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 12:55:25,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 745 transitions. [2022-12-13 12:55:25,078 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4259576901086335 [2022-12-13 12:55:25,078 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 745 transitions. [2022-12-13 12:55:25,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 745 transitions. [2022-12-13 12:55:25,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:25,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 745 transitions. [2022-12-13 12:55:25,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 67.72727272727273) internal successors, (745), 11 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:25,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 159.0) internal successors, (1908), 12 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:25,080 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 159.0) internal successors, (1908), 12 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:25,080 INFO L175 Difference]: Start difference. First operand has 76 places, 50 transitions, 561 flow. Second operand 11 states and 745 transitions. [2022-12-13 12:55:25,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 75 transitions, 827 flow [2022-12-13 12:55:25,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 75 transitions, 759 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-12-13 12:55:25,085 INFO L231 Difference]: Finished difference. Result has 78 places, 38 transitions, 404 flow [2022-12-13 12:55:25,086 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=404, PETRI_PLACES=78, PETRI_TRANSITIONS=38} [2022-12-13 12:55:25,086 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 58 predicate places. [2022-12-13 12:55:25,086 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 38 transitions, 404 flow [2022-12-13 12:55:25,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 64.44444444444444) internal successors, (1160), 18 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:25,087 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:25,087 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:25,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 12:55:25,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:55:25,288 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:55:25,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:25,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1432089073, now seen corresponding path program 4 times [2022-12-13 12:55:25,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:25,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514653743] [2022-12-13 12:55:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:25,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:25,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:25,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514653743] [2022-12-13 12:55:25,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514653743] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:55:25,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928047933] [2022-12-13 12:55:25,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:55:25,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:55:25,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:55:25,555 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:55:25,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 12:55:25,607 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:55:25,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:55:25,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 12:55:25,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:55:25,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:25,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:55:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:25,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928047933] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:55:25,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:55:25,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2022-12-13 12:55:25,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435309362] [2022-12-13 12:55:25,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:55:25,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 12:55:25,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:25,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 12:55:25,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-12-13 12:55:26,149 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 159 [2022-12-13 12:55:26,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 38 transitions, 404 flow. Second operand has 20 states, 20 states have (on average 61.8) internal successors, (1236), 20 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:26,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:26,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 159 [2022-12-13 12:55:26,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:26,926 INFO L130 PetriNetUnfolder]: 86/191 cut-off events. [2022-12-13 12:55:26,926 INFO L131 PetriNetUnfolder]: For 1006/1006 co-relation queries the response was YES. [2022-12-13 12:55:26,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 191 events. 86/191 cut-off events. For 1006/1006 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 666 event pairs, 3 based on Foata normal form. 4/195 useless extension candidates. Maximal degree in co-relation 1030. Up to 38 conditions per place. [2022-12-13 12:55:26,927 INFO L137 encePairwiseOnDemand]: 151/159 looper letters, 41 selfloop transitions, 30 changer transitions 25/96 dead transitions. [2022-12-13 12:55:26,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 96 transitions, 938 flow [2022-12-13 12:55:26,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 12:55:26,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 12:55:26,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1287 transitions. [2022-12-13 12:55:26,928 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4047169811320755 [2022-12-13 12:55:26,928 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1287 transitions. [2022-12-13 12:55:26,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1287 transitions. [2022-12-13 12:55:26,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:26,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1287 transitions. [2022-12-13 12:55:26,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 64.35) internal successors, (1287), 20 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:26,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 159.0) internal successors, (3339), 21 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:26,932 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 159.0) internal successors, (3339), 21 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:26,932 INFO L175 Difference]: Start difference. First operand has 78 places, 38 transitions, 404 flow. Second operand 20 states and 1287 transitions. [2022-12-13 12:55:26,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 96 transitions, 938 flow [2022-12-13 12:55:26,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 96 transitions, 827 flow, removed 11 selfloop flow, removed 12 redundant places. [2022-12-13 12:55:26,937 INFO L231 Difference]: Finished difference. Result has 85 places, 49 transitions, 545 flow [2022-12-13 12:55:26,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=545, PETRI_PLACES=85, PETRI_TRANSITIONS=49} [2022-12-13 12:55:26,938 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 65 predicate places. [2022-12-13 12:55:26,938 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 49 transitions, 545 flow [2022-12-13 12:55:26,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 61.8) internal successors, (1236), 20 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:26,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:26,938 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:26,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 12:55:27,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 12:55:27,139 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:55:27,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:27,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1507047073, now seen corresponding path program 5 times [2022-12-13 12:55:27,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:27,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57963846] [2022-12-13 12:55:27,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:27,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:27,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:27,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57963846] [2022-12-13 12:55:27,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57963846] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:55:27,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910550514] [2022-12-13 12:55:27,290 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:55:27,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:55:27,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:55:27,291 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:55:27,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 12:55:27,348 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:55:27,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:55:27,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 12:55:27,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:55:27,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:27,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:55:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:27,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910550514] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:55:27,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:55:27,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2022-12-13 12:55:27,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777267342] [2022-12-13 12:55:27,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:55:27,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 12:55:27,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:27,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 12:55:27,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:55:27,678 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 159 [2022-12-13 12:55:27,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 49 transitions, 545 flow. Second operand has 16 states, 16 states have (on average 62.875) internal successors, (1006), 16 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:27,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:27,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 159 [2022-12-13 12:55:27,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:27,893 INFO L130 PetriNetUnfolder]: 72/158 cut-off events. [2022-12-13 12:55:27,894 INFO L131 PetriNetUnfolder]: For 813/813 co-relation queries the response was YES. [2022-12-13 12:55:27,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 158 events. 72/158 cut-off events. For 813/813 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 491 event pairs, 1 based on Foata normal form. 3/161 useless extension candidates. Maximal degree in co-relation 892. Up to 47 conditions per place. [2022-12-13 12:55:27,895 INFO L137 encePairwiseOnDemand]: 151/159 looper letters, 33 selfloop transitions, 20 changer transitions 17/70 dead transitions. [2022-12-13 12:55:27,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 70 transitions, 775 flow [2022-12-13 12:55:27,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 12:55:27,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 12:55:27,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 784 transitions. [2022-12-13 12:55:27,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4109014675052411 [2022-12-13 12:55:27,897 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 784 transitions. [2022-12-13 12:55:27,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 784 transitions. [2022-12-13 12:55:27,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:27,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 784 transitions. [2022-12-13 12:55:27,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 65.33333333333333) internal successors, (784), 12 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:27,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 159.0) internal successors, (2067), 13 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:27,900 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 159.0) internal successors, (2067), 13 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:27,901 INFO L175 Difference]: Start difference. First operand has 85 places, 49 transitions, 545 flow. Second operand 12 states and 784 transitions. [2022-12-13 12:55:27,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 70 transitions, 775 flow [2022-12-13 12:55:27,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 70 transitions, 654 flow, removed 24 selfloop flow, removed 11 redundant places. [2022-12-13 12:55:27,906 INFO L231 Difference]: Finished difference. Result has 82 places, 39 transitions, 373 flow [2022-12-13 12:55:27,906 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=373, PETRI_PLACES=82, PETRI_TRANSITIONS=39} [2022-12-13 12:55:27,906 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 62 predicate places. [2022-12-13 12:55:27,906 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 39 transitions, 373 flow [2022-12-13 12:55:27,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 62.875) internal successors, (1006), 16 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:27,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:27,907 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:27,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 12:55:28,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 12:55:28,108 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:55:28,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:28,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1068981871, now seen corresponding path program 6 times [2022-12-13 12:55:28,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:28,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886059128] [2022-12-13 12:55:28,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:28,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:28,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:28,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:28,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886059128] [2022-12-13 12:55:28,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886059128] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:55:28,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860052639] [2022-12-13 12:55:28,235 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:55:28,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:55:28,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:55:28,236 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:55:28,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 12:55:28,286 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-13 12:55:28,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:55:28,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 12:55:28,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:55:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:28,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:55:28,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:28,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860052639] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:55:28,514 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:55:28,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-13 12:55:28,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821927047] [2022-12-13 12:55:28,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:55:28,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 12:55:28,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:28,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 12:55:28,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-12-13 12:55:28,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 159 [2022-12-13 12:55:28,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 39 transitions, 373 flow. Second operand has 15 states, 15 states have (on average 64.53333333333333) internal successors, (968), 15 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:28,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:28,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 159 [2022-12-13 12:55:28,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:28,946 INFO L130 PetriNetUnfolder]: 59/129 cut-off events. [2022-12-13 12:55:28,946 INFO L131 PetriNetUnfolder]: For 583/583 co-relation queries the response was YES. [2022-12-13 12:55:28,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 129 events. 59/129 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 365 event pairs, 1 based on Foata normal form. 1/130 useless extension candidates. Maximal degree in co-relation 686. Up to 27 conditions per place. [2022-12-13 12:55:28,948 INFO L137 encePairwiseOnDemand]: 151/159 looper letters, 30 selfloop transitions, 25 changer transitions 11/66 dead transitions. [2022-12-13 12:55:28,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 66 transitions, 636 flow [2022-12-13 12:55:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 12:55:28,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 12:55:28,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1002 transitions. [2022-12-13 12:55:28,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42012578616352203 [2022-12-13 12:55:28,950 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1002 transitions. [2022-12-13 12:55:28,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1002 transitions. [2022-12-13 12:55:28,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:28,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1002 transitions. [2022-12-13 12:55:28,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 66.8) internal successors, (1002), 15 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:28,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 159.0) internal successors, (2544), 16 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:28,955 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 159.0) internal successors, (2544), 16 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:28,955 INFO L175 Difference]: Start difference. First operand has 82 places, 39 transitions, 373 flow. Second operand 15 states and 1002 transitions. [2022-12-13 12:55:28,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 66 transitions, 636 flow [2022-12-13 12:55:28,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 66 transitions, 542 flow, removed 20 selfloop flow, removed 15 redundant places. [2022-12-13 12:55:28,960 INFO L231 Difference]: Finished difference. Result has 76 places, 39 transitions, 360 flow [2022-12-13 12:55:28,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=360, PETRI_PLACES=76, PETRI_TRANSITIONS=39} [2022-12-13 12:55:28,961 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 56 predicate places. [2022-12-13 12:55:28,961 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 39 transitions, 360 flow [2022-12-13 12:55:28,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 64.53333333333333) internal successors, (968), 15 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:28,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:28,961 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:28,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 12:55:29,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 12:55:29,162 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:55:29,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:29,164 INFO L85 PathProgramCache]: Analyzing trace with hash 666809179, now seen corresponding path program 7 times [2022-12-13 12:55:29,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:29,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120149437] [2022-12-13 12:55:29,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:29,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:29,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:29,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:29,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120149437] [2022-12-13 12:55:29,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120149437] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:55:29,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830247560] [2022-12-13 12:55:29,302 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 12:55:29,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:55:29,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:55:29,303 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:55:29,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 12:55:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:29,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 12:55:29,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:55:29,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:29,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:55:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:29,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830247560] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:55:29,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:55:29,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-13 12:55:29,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841636363] [2022-12-13 12:55:29,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:55:29,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:55:29,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:29,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:55:29,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:55:29,780 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 159 [2022-12-13 12:55:29,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 39 transitions, 360 flow. Second operand has 19 states, 19 states have (on average 64.73684210526316) internal successors, (1230), 19 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:29,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:29,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 159 [2022-12-13 12:55:29,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:30,040 INFO L130 PetriNetUnfolder]: 53/115 cut-off events. [2022-12-13 12:55:30,040 INFO L131 PetriNetUnfolder]: For 373/373 co-relation queries the response was YES. [2022-12-13 12:55:30,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 115 events. 53/115 cut-off events. For 373/373 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 304 event pairs, 3 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 588. Up to 28 conditions per place. [2022-12-13 12:55:30,041 INFO L137 encePairwiseOnDemand]: 151/159 looper letters, 26 selfloop transitions, 15 changer transitions 16/57 dead transitions. [2022-12-13 12:55:30,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 57 transitions, 545 flow [2022-12-13 12:55:30,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 12:55:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 12:55:30,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 798 transitions. [2022-12-13 12:55:30,043 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41823899371069184 [2022-12-13 12:55:30,043 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 798 transitions. [2022-12-13 12:55:30,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 798 transitions. [2022-12-13 12:55:30,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:30,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 798 transitions. [2022-12-13 12:55:30,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 66.5) internal successors, (798), 12 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:30,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 159.0) internal successors, (2067), 13 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:30,047 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 159.0) internal successors, (2067), 13 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:30,047 INFO L175 Difference]: Start difference. First operand has 76 places, 39 transitions, 360 flow. Second operand 12 states and 798 transitions. [2022-12-13 12:55:30,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 57 transitions, 545 flow [2022-12-13 12:55:30,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 57 transitions, 497 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-12-13 12:55:30,051 INFO L231 Difference]: Finished difference. Result has 77 places, 34 transitions, 299 flow [2022-12-13 12:55:30,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=299, PETRI_PLACES=77, PETRI_TRANSITIONS=34} [2022-12-13 12:55:30,052 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 57 predicate places. [2022-12-13 12:55:30,052 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 34 transitions, 299 flow [2022-12-13 12:55:30,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 64.73684210526316) internal successors, (1230), 19 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:30,052 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:30,052 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:30,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 12:55:30,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 12:55:30,253 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:55:30,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:30,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1857258997, now seen corresponding path program 8 times [2022-12-13 12:55:30,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:30,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799878119] [2022-12-13 12:55:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:30,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:30,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:30,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799878119] [2022-12-13 12:55:30,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799878119] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:55:30,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626085930] [2022-12-13 12:55:30,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:55:30,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:55:30,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:55:30,380 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:55:30,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 12:55:30,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:55:30,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:55:30,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 12:55:30,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:55:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:30,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:55:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:55:30,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626085930] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:55:30,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:55:30,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-13 12:55:30,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736975430] [2022-12-13 12:55:30,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:55:30,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 12:55:30,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:30,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 12:55:30,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-12-13 12:55:30,828 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 159 [2022-12-13 12:55:30,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 34 transitions, 299 flow. Second operand has 18 states, 18 states have (on average 64.44444444444444) internal successors, (1160), 18 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:30,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:30,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 159 [2022-12-13 12:55:30,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:31,065 INFO L130 PetriNetUnfolder]: 39/87 cut-off events. [2022-12-13 12:55:31,065 INFO L131 PetriNetUnfolder]: For 286/286 co-relation queries the response was YES. [2022-12-13 12:55:31,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 87 events. 39/87 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 211 event pairs, 3 based on Foata normal form. 1/88 useless extension candidates. Maximal degree in co-relation 453. Up to 20 conditions per place. [2022-12-13 12:55:31,066 INFO L137 encePairwiseOnDemand]: 151/159 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2022-12-13 12:55:31,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 41 transitions, 403 flow [2022-12-13 12:55:31,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 12:55:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 12:55:31,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 660 transitions. [2022-12-13 12:55:31,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41509433962264153 [2022-12-13 12:55:31,067 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 660 transitions. [2022-12-13 12:55:31,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 660 transitions. [2022-12-13 12:55:31,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:31,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 660 transitions. [2022-12-13 12:55:31,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 66.0) internal successors, (660), 10 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 12:55:31,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 159.0) internal successors, (1749), 11 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:31,069 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 159.0) internal successors, (1749), 11 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:31,069 INFO L175 Difference]: Start difference. First operand has 77 places, 34 transitions, 299 flow. Second operand 10 states and 660 transitions. [2022-12-13 12:55:31,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 41 transitions, 403 flow [2022-12-13 12:55:31,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 41 transitions, 361 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-12-13 12:55:31,072 INFO L231 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2022-12-13 12:55:31,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=69, PETRI_TRANSITIONS=0} [2022-12-13 12:55:31,072 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 49 predicate places. [2022-12-13 12:55:31,073 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2022-12-13 12:55:31,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 64.44444444444444) internal successors, (1160), 18 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:31,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-13 12:55:31,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-13 12:55:31,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-13 12:55:31,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 12:55:31,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 12:55:31,276 INFO L445 BasicCegarLoop]: Path program histogram: [8, 6, 6, 6] [2022-12-13 12:55:31,278 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 12:55:31,279 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 12:55:31,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 12:55:31 BasicIcfg [2022-12-13 12:55:31,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 12:55:31,281 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 12:55:31,281 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 12:55:31,281 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 12:55:31,281 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:55:13" (3/4) ... [2022-12-13 12:55:31,283 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 12:55:31,288 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 12:55:31,288 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 12:55:31,290 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-12-13 12:55:31,291 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 12:55:31,291 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 12:55:31,291 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 12:55:31,312 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 12:55:31,312 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 12:55:31,313 INFO L158 Benchmark]: Toolchain (without parser) took 17856.15ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 111.1MB in the beginning and 60.6MB in the end (delta: 50.6MB). Peak memory consumption was 82.1MB. Max. memory is 16.1GB. [2022-12-13 12:55:31,313 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 146.8MB. Free memory is still 89.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:55:31,313 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.82ms. Allocated memory is still 146.8MB. Free memory was 110.6MB in the beginning and 99.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 12:55:31,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.50ms. Allocated memory is still 146.8MB. Free memory was 99.7MB in the beginning and 98.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:55:31,314 INFO L158 Benchmark]: Boogie Preprocessor took 24.76ms. Allocated memory is still 146.8MB. Free memory was 98.0MB in the beginning and 97.0MB in the end (delta: 963.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:55:31,314 INFO L158 Benchmark]: RCFGBuilder took 282.24ms. Allocated memory is still 146.8MB. Free memory was 96.5MB in the beginning and 84.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 12:55:31,314 INFO L158 Benchmark]: TraceAbstraction took 17319.42ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 83.9MB in the beginning and 62.5MB in the end (delta: 21.4MB). Peak memory consumption was 52.7MB. Max. memory is 16.1GB. [2022-12-13 12:55:31,315 INFO L158 Benchmark]: Witness Printer took 31.49ms. Allocated memory is still 176.2MB. Free memory was 62.5MB in the beginning and 60.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:55:31,317 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 146.8MB. Free memory is still 89.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 164.82ms. Allocated memory is still 146.8MB. Free memory was 110.6MB in the beginning and 99.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.50ms. Allocated memory is still 146.8MB. Free memory was 99.7MB in the beginning and 98.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.76ms. Allocated memory is still 146.8MB. Free memory was 98.0MB in the beginning and 97.0MB in the end (delta: 963.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 282.24ms. Allocated memory is still 146.8MB. Free memory was 96.5MB in the beginning and 84.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 17319.42ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 83.9MB in the beginning and 62.5MB in the end (delta: 21.4MB). Peak memory consumption was 52.7MB. Max. memory is 16.1GB. * Witness Printer took 31.49ms. Allocated memory is still 176.2MB. Free memory was 62.5MB in the beginning and 60.6MB in the end (delta: 2.0MB). 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, 77 PlacesBefore, 20 PlacesAfterwards, 76 TransitionsBefore, 15 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 7 FixpointIterations, 37 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 72 TotalNumberOfCompositions, 627 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 589, independent: 575, independent conditional: 0, independent unconditional: 575, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 304, independent: 302, independent conditional: 0, independent unconditional: 302, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 589, independent: 273, independent conditional: 0, independent unconditional: 273, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 304, unknown conditional: 0, unknown unconditional: 304] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 79]: 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, 104 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: 17.2s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2666 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2236 mSDsluCounter, 2661 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2534 mSDsCounter, 307 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8910 IncrementalHoareTripleChecker+Invalid, 9217 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 307 mSolverCounterUnsat, 127 mSDtfsCounter, 8910 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 580 GetRequests, 244 SyntacticMatches, 35 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=841occurred in iteration=15, InterpolantAutomatonStates: 216, 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, 4.8s InterpolantComputationTime, 528 NumberOfCodeBlocks, 528 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 642 ConstructedInterpolants, 0 QuantifiedInterpolants, 4277 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1311 ConjunctsInSsa, 155 ConjunctsInUnsatCore, 48 InterpolantComputations, 18 PerfectInterpolantSequences, 13/66 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 12:55:31,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47e2e732-3354-4606-bdb2-ac21079fef46/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