./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP --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 d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:03:56,213 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:03:56,288 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:03:56,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:03:56,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:03:56,322 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:03:56,323 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:03:56,323 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:03:56,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:03:56,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:03:56,326 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:03:56,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:03:56,328 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:03:56,329 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:03:56,329 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:03:56,330 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:03:56,331 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:03:56,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:03:56,332 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:03:56,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:03:56,333 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:03:56,334 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:03:56,335 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:03:56,335 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:03:56,337 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:03:56,337 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:03:56,338 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:03:56,338 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:03:56,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:03:56,339 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:03:56,340 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:03:56,340 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:03:56,341 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:03:56,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:03:56,341 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:03:56,342 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:03:56,342 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:03:56,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:03:56,343 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:03:56,344 INFO L153 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_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 [2023-11-06 22:03:56,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:03:56,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:03:56,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:03:56,676 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:03:56,676 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:03:56,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2023-11-06 22:03:59,867 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:04:00,079 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:04:00,079 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2023-11-06 22:04:00,089 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/data/21195c697/1916e01bcb2645b99d3595246c5b4726/FLAGf759a0a72 [2023-11-06 22:04:00,105 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/data/21195c697/1916e01bcb2645b99d3595246c5b4726 [2023-11-06 22:04:00,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:04:00,110 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:04:00,112 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:00,112 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:04:00,118 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:04:00,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:00" (1/1) ... [2023-11-06 22:04:00,120 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48576d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:00, skipping insertion in model container [2023-11-06 22:04:00,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:00" (1/1) ... [2023-11-06 22:04:00,148 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:04:00,349 WARN L240 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_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2669,2682] [2023-11-06 22:04:00,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:00,365 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:04:00,393 WARN L240 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_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2669,2682] [2023-11-06 22:04:00,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:00,411 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:04:00,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:00 WrapperNode [2023-11-06 22:04:00,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:00,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:00,414 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:04:00,414 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:04:00,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:00" (1/1) ... [2023-11-06 22:04:00,432 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:00" (1/1) ... [2023-11-06 22:04:00,467 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2023-11-06 22:04:00,467 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:00,468 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:04:00,473 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:04:00,473 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:04:00,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:00" (1/1) ... [2023-11-06 22:04:00,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:00" (1/1) ... [2023-11-06 22:04:00,487 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:00" (1/1) ... [2023-11-06 22:04:00,487 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:00" (1/1) ... [2023-11-06 22:04:00,494 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:00" (1/1) ... [2023-11-06 22:04:00,506 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:00" (1/1) ... [2023-11-06 22:04:00,508 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:00" (1/1) ... [2023-11-06 22:04:00,510 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:00" (1/1) ... [2023-11-06 22:04:00,513 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:04:00,514 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:04:00,514 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:04:00,515 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:04:00,516 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:00" (1/1) ... [2023-11-06 22:04:00,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:00,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:00,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:04:00,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:04:00,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:04:00,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:04:00,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:04:00,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:04:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:04:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:04:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:04:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 22:04:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 22:04:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:04:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:04:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:04:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:04:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:04:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:04:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:04:00,601 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:04:00,719 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:04:00,721 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:04:01,055 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:04:01,066 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:04:01,066 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:04:01,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:01 BoogieIcfgContainer [2023-11-06 22:04:01,069 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:04:01,072 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:04:01,072 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:04:01,076 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:04:01,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:04:00" (1/3) ... [2023-11-06 22:04:01,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69224960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:01, skipping insertion in model container [2023-11-06 22:04:01,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:00" (2/3) ... [2023-11-06 22:04:01,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69224960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:01, skipping insertion in model container [2023-11-06 22:04:01,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:01" (3/3) ... [2023-11-06 22:04:01,080 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2023-11-06 22:04:01,090 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:04:01,109 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:04:01,109 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:04:01,109 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:04:01,300 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 22:04:01,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 150 transitions, 328 flow [2023-11-06 22:04:01,440 INFO L124 PetriNetUnfolderBase]: 10/146 cut-off events. [2023-11-06 22:04:01,441 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:04:01,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 146 events. 10/146 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2023-11-06 22:04:01,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 150 transitions, 328 flow [2023-11-06 22:04:01,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 133 transitions, 290 flow [2023-11-06 22:04:01,472 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:04:01,486 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 133 transitions, 290 flow [2023-11-06 22:04:01,489 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 133 transitions, 290 flow [2023-11-06 22:04:01,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 133 transitions, 290 flow [2023-11-06 22:04:01,539 INFO L124 PetriNetUnfolderBase]: 10/133 cut-off events. [2023-11-06 22:04:01,540 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:04:01,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 133 events. 10/133 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2023-11-06 22:04:01,546 INFO L119 LiptonReduction]: Number of co-enabled transitions 3312 [2023-11-06 22:04:06,844 INFO L134 LiptonReduction]: Checked pairs total: 3045 [2023-11-06 22:04:06,845 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-11-06 22:04:06,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:04:06,871 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;@59ab170a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:04:06,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-06 22:04:06,880 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:04:06,880 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2023-11-06 22:04:06,880 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:04:06,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:06,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:06,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:04:06,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:06,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2063948621, now seen corresponding path program 1 times [2023-11-06 22:04:06,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:06,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469884366] [2023-11-06 22:04:06,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:06,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:07,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:07,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469884366] [2023-11-06 22:04:07,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469884366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:07,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:07,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:04:07,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760506378] [2023-11-06 22:04:07,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:07,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:04:07,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:07,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:04:07,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:04:07,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 269 [2023-11-06 22:04:07,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:07,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:07,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 269 [2023-11-06 22:04:07,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:08,086 INFO L124 PetriNetUnfolderBase]: 497/677 cut-off events. [2023-11-06 22:04:08,087 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-06 22:04:08,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 677 events. 497/677 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1772 event pairs, 117 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1016. Up to 471 conditions per place. [2023-11-06 22:04:08,097 INFO L140 encePairwiseOnDemand]: 263/269 looper letters, 41 selfloop transitions, 5 changer transitions 1/47 dead transitions. [2023-11-06 22:04:08,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 233 flow [2023-11-06 22:04:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:04:08,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:04:08,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-11-06 22:04:08,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275092936802974 [2023-11-06 22:04:08,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-11-06 22:04:08,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-11-06 22:04:08,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:08,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-11-06 22:04:08,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:08,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:08,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:08,141 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 74 flow. Second operand 3 states and 345 transitions. [2023-11-06 22:04:08,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 233 flow [2023-11-06 22:04:08,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 47 transitions, 203 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-06 22:04:08,151 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 91 flow [2023-11-06 22:04:08,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-11-06 22:04:08,157 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -5 predicate places. [2023-11-06 22:04:08,158 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 91 flow [2023-11-06 22:04:08,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:08,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:08,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:08,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:04:08,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:04:08,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:08,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1609553413, now seen corresponding path program 1 times [2023-11-06 22:04:08,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:08,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025280263] [2023-11-06 22:04:08,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:08,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:08,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:08,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025280263] [2023-11-06 22:04:08,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025280263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:08,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:08,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:04:08,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038320239] [2023-11-06 22:04:08,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:08,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:04:08,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:08,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:04:08,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:04:08,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 269 [2023-11-06 22:04:08,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:08,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:08,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 269 [2023-11-06 22:04:08,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:08,982 INFO L124 PetriNetUnfolderBase]: 699/957 cut-off events. [2023-11-06 22:04:08,982 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2023-11-06 22:04:08,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2436 conditions, 957 events. 699/957 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2920 event pairs, 35 based on Foata normal form. 26/983 useless extension candidates. Maximal degree in co-relation 838. Up to 461 conditions per place. [2023-11-06 22:04:08,994 INFO L140 encePairwiseOnDemand]: 264/269 looper letters, 72 selfloop transitions, 10 changer transitions 0/82 dead transitions. [2023-11-06 22:04:08,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 82 transitions, 405 flow [2023-11-06 22:04:08,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:04:08,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:04:09,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 631 transitions. [2023-11-06 22:04:09,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691449814126394 [2023-11-06 22:04:09,005 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 631 transitions. [2023-11-06 22:04:09,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 631 transitions. [2023-11-06 22:04:09,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:09,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 631 transitions. [2023-11-06 22:04:09,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:09,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:09,022 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:09,023 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 91 flow. Second operand 5 states and 631 transitions. [2023-11-06 22:04:09,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 82 transitions, 405 flow [2023-11-06 22:04:09,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 82 transitions, 397 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:04:09,028 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 151 flow [2023-11-06 22:04:09,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2023-11-06 22:04:09,031 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-11-06 22:04:09,031 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 151 flow [2023-11-06 22:04:09,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:09,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:09,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:09,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:04:09,038 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:04:09,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:09,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2122612177, now seen corresponding path program 2 times [2023-11-06 22:04:09,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:09,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95384764] [2023-11-06 22:04:09,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:09,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:09,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:09,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:09,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95384764] [2023-11-06 22:04:09,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95384764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:09,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:09,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:04:09,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855144269] [2023-11-06 22:04:09,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:09,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:04:09,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:09,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:04:09,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:04:09,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 269 [2023-11-06 22:04:09,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:09,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:09,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 269 [2023-11-06 22:04:09,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:09,754 INFO L124 PetriNetUnfolderBase]: 811/1105 cut-off events. [2023-11-06 22:04:09,755 INFO L125 PetriNetUnfolderBase]: For 907/907 co-relation queries the response was YES. [2023-11-06 22:04:09,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 1105 events. 811/1105 cut-off events. For 907/907 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3344 event pairs, 233 based on Foata normal form. 36/1141 useless extension candidates. Maximal degree in co-relation 955. Up to 523 conditions per place. [2023-11-06 22:04:09,768 INFO L140 encePairwiseOnDemand]: 264/269 looper letters, 72 selfloop transitions, 10 changer transitions 0/82 dead transitions. [2023-11-06 22:04:09,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 82 transitions, 456 flow [2023-11-06 22:04:09,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:04:09,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:04:09,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 631 transitions. [2023-11-06 22:04:09,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691449814126394 [2023-11-06 22:04:09,773 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 631 transitions. [2023-11-06 22:04:09,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 631 transitions. [2023-11-06 22:04:09,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:09,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 631 transitions. [2023-11-06 22:04:09,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:09,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:09,782 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:09,782 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 151 flow. Second operand 5 states and 631 transitions. [2023-11-06 22:04:09,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 82 transitions, 456 flow [2023-11-06 22:04:09,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 82 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:04:09,792 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 205 flow [2023-11-06 22:04:09,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2023-11-06 22:04:09,794 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-11-06 22:04:09,798 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 205 flow [2023-11-06 22:04:09,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:09,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:09,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:09,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:04:09,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:04:09,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:09,801 INFO L85 PathProgramCache]: Analyzing trace with hash -75374469, now seen corresponding path program 1 times [2023-11-06 22:04:09,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:09,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022316725] [2023-11-06 22:04:09,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:09,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:09,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:09,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:09,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022316725] [2023-11-06 22:04:09,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022316725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:10,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:10,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:04:10,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275530404] [2023-11-06 22:04:10,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:10,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:04:10,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:10,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:04:10,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:04:10,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 269 [2023-11-06 22:04:10,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:10,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:10,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 269 [2023-11-06 22:04:10,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:10,486 INFO L124 PetriNetUnfolderBase]: 769/1063 cut-off events. [2023-11-06 22:04:10,486 INFO L125 PetriNetUnfolderBase]: For 1718/1718 co-relation queries the response was YES. [2023-11-06 22:04:10,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3553 conditions, 1063 events. 769/1063 cut-off events. For 1718/1718 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3505 event pairs, 35 based on Foata normal form. 42/1105 useless extension candidates. Maximal degree in co-relation 1971. Up to 461 conditions per place. [2023-11-06 22:04:10,500 INFO L140 encePairwiseOnDemand]: 264/269 looper letters, 75 selfloop transitions, 8 changer transitions 0/83 dead transitions. [2023-11-06 22:04:10,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 83 transitions, 492 flow [2023-11-06 22:04:10,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:04:10,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:04:10,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 630 transitions. [2023-11-06 22:04:10,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684014869888476 [2023-11-06 22:04:10,505 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 630 transitions. [2023-11-06 22:04:10,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 630 transitions. [2023-11-06 22:04:10,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:10,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 630 transitions. [2023-11-06 22:04:10,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:10,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:10,514 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:10,515 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 205 flow. Second operand 5 states and 630 transitions. [2023-11-06 22:04:10,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 83 transitions, 492 flow [2023-11-06 22:04:10,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 83 transitions, 483 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:04:10,529 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 210 flow [2023-11-06 22:04:10,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-11-06 22:04:10,531 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2023-11-06 22:04:10,532 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 210 flow [2023-11-06 22:04:10,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:10,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:10,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:10,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:04:10,534 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:04:10,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:10,534 INFO L85 PathProgramCache]: Analyzing trace with hash -501013878, now seen corresponding path program 1 times [2023-11-06 22:04:10,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:10,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980922138] [2023-11-06 22:04:10,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:10,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:10,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:10,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980922138] [2023-11-06 22:04:10,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980922138] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:10,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860141950] [2023-11-06 22:04:10,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:10,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:10,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:10,679 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:10,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:04:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:10,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:04:10,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:11,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:11,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:11,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860141950] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:04:11,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:04:11,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-06 22:04:11,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087748004] [2023-11-06 22:04:11,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:04:11,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:04:11,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:11,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:04:11,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:04:11,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 269 [2023-11-06 22:04:11,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:11,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:11,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 269 [2023-11-06 22:04:11,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:11,790 INFO L124 PetriNetUnfolderBase]: 1445/1997 cut-off events. [2023-11-06 22:04:11,790 INFO L125 PetriNetUnfolderBase]: For 5121/5121 co-relation queries the response was YES. [2023-11-06 22:04:11,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7082 conditions, 1997 events. 1445/1997 cut-off events. For 5121/5121 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7164 event pairs, 283 based on Foata normal form. 72/2069 useless extension candidates. Maximal degree in co-relation 3872. Up to 824 conditions per place. [2023-11-06 22:04:11,813 INFO L140 encePairwiseOnDemand]: 264/269 looper letters, 102 selfloop transitions, 8 changer transitions 0/110 dead transitions. [2023-11-06 22:04:11,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 110 transitions, 845 flow [2023-11-06 22:04:11,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:04:11,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:04:11,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 629 transitions. [2023-11-06 22:04:11,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46765799256505575 [2023-11-06 22:04:11,817 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 629 transitions. [2023-11-06 22:04:11,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 629 transitions. [2023-11-06 22:04:11,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:11,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 629 transitions. [2023-11-06 22:04:11,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:11,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:11,824 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:11,824 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 210 flow. Second operand 5 states and 629 transitions. [2023-11-06 22:04:11,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 110 transitions, 845 flow [2023-11-06 22:04:11,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 110 transitions, 820 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-06 22:04:11,836 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 256 flow [2023-11-06 22:04:11,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2023-11-06 22:04:11,839 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-11-06 22:04:11,839 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 256 flow [2023-11-06 22:04:11,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:11,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:11,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:11,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:04:12,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:12,045 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:04:12,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:12,046 INFO L85 PathProgramCache]: Analyzing trace with hash 2118064548, now seen corresponding path program 2 times [2023-11-06 22:04:12,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:12,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792544333] [2023-11-06 22:04:12,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:12,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:12,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:12,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792544333] [2023-11-06 22:04:12,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792544333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:12,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:12,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:04:12,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376676060] [2023-11-06 22:04:12,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:12,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:04:12,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:12,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:04:12,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:04:12,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 269 [2023-11-06 22:04:12,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:12,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:12,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 269 [2023-11-06 22:04:12,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:12,704 INFO L124 PetriNetUnfolderBase]: 1275/1751 cut-off events. [2023-11-06 22:04:12,704 INFO L125 PetriNetUnfolderBase]: For 4700/4700 co-relation queries the response was YES. [2023-11-06 22:04:12,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7300 conditions, 1751 events. 1275/1751 cut-off events. For 4700/4700 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6090 event pairs, 65 based on Foata normal form. 34/1785 useless extension candidates. Maximal degree in co-relation 4692. Up to 710 conditions per place. [2023-11-06 22:04:12,728 INFO L140 encePairwiseOnDemand]: 264/269 looper letters, 102 selfloop transitions, 11 changer transitions 0/113 dead transitions. [2023-11-06 22:04:12,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 113 transitions, 894 flow [2023-11-06 22:04:12,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:04:12,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:04:12,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 627 transitions. [2023-11-06 22:04:12,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661710037174721 [2023-11-06 22:04:12,732 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 627 transitions. [2023-11-06 22:04:12,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 627 transitions. [2023-11-06 22:04:12,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:12,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 627 transitions. [2023-11-06 22:04:12,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.4) internal successors, (627), 5 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:12,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:12,739 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:12,739 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 256 flow. Second operand 5 states and 627 transitions. [2023-11-06 22:04:12,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 113 transitions, 894 flow [2023-11-06 22:04:12,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 113 transitions, 894 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:04:12,754 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 317 flow [2023-11-06 22:04:12,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=317, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2023-11-06 22:04:12,757 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2023-11-06 22:04:12,758 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 317 flow [2023-11-06 22:04:12,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:12,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:12,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:12,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:04:12,759 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:04:12,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:12,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1333526479, now seen corresponding path program 1 times [2023-11-06 22:04:12,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:12,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123891979] [2023-11-06 22:04:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:12,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:12,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:12,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:12,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123891979] [2023-11-06 22:04:12,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123891979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:12,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:12,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:04:12,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875526784] [2023-11-06 22:04:12,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:12,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:04:12,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:12,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:04:12,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:04:13,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 269 [2023-11-06 22:04:13,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:13,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:13,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 269 [2023-11-06 22:04:13,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:13,409 INFO L124 PetriNetUnfolderBase]: 1237/1713 cut-off events. [2023-11-06 22:04:13,410 INFO L125 PetriNetUnfolderBase]: For 5422/5422 co-relation queries the response was YES. [2023-11-06 22:04:13,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7731 conditions, 1713 events. 1237/1713 cut-off events. For 5422/5422 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6024 event pairs, 65 based on Foata normal form. 38/1751 useless extension candidates. Maximal degree in co-relation 4977. Up to 801 conditions per place. [2023-11-06 22:04:13,434 INFO L140 encePairwiseOnDemand]: 264/269 looper letters, 99 selfloop transitions, 8 changer transitions 4/111 dead transitions. [2023-11-06 22:04:13,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 111 transitions, 907 flow [2023-11-06 22:04:13,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:04:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:04:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 626 transitions. [2023-11-06 22:04:13,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654275092936803 [2023-11-06 22:04:13,438 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 626 transitions. [2023-11-06 22:04:13,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 626 transitions. [2023-11-06 22:04:13,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:13,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 626 transitions. [2023-11-06 22:04:13,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:13,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:13,445 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:13,445 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 317 flow. Second operand 5 states and 626 transitions. [2023-11-06 22:04:13,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 111 transitions, 907 flow [2023-11-06 22:04:13,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 896 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 22:04:13,462 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 320 flow [2023-11-06 22:04:13,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2023-11-06 22:04:13,464 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 25 predicate places. [2023-11-06 22:04:13,464 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 320 flow [2023-11-06 22:04:13,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:13,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:13,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:13,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:04:13,465 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:04:13,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:13,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1760869387, now seen corresponding path program 2 times [2023-11-06 22:04:13,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:13,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423928103] [2023-11-06 22:04:13,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:13,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:13,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:13,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423928103] [2023-11-06 22:04:13,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423928103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:13,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:13,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:04:13,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927123755] [2023-11-06 22:04:13,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:13,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:04:13,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:13,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:04:13,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:04:13,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 269 [2023-11-06 22:04:13,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 320 flow. Second operand has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:13,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:13,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 269 [2023-11-06 22:04:13,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:14,159 INFO L124 PetriNetUnfolderBase]: 1441/1985 cut-off events. [2023-11-06 22:04:14,159 INFO L125 PetriNetUnfolderBase]: For 6580/6580 co-relation queries the response was YES. [2023-11-06 22:04:14,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9195 conditions, 1985 events. 1441/1985 cut-off events. For 6580/6580 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6947 event pairs, 257 based on Foata normal form. 68/2053 useless extension candidates. Maximal degree in co-relation 5912. Up to 1119 conditions per place. [2023-11-06 22:04:14,190 INFO L140 encePairwiseOnDemand]: 264/269 looper letters, 101 selfloop transitions, 8 changer transitions 0/109 dead transitions. [2023-11-06 22:04:14,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 109 transitions, 923 flow [2023-11-06 22:04:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:04:14,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:04:14,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 623 transitions. [2023-11-06 22:04:14,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46319702602230484 [2023-11-06 22:04:14,195 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 623 transitions. [2023-11-06 22:04:14,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 623 transitions. [2023-11-06 22:04:14,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:14,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 623 transitions. [2023-11-06 22:04:14,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:14,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:14,202 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:14,202 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 320 flow. Second operand 5 states and 623 transitions. [2023-11-06 22:04:14,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 109 transitions, 923 flow [2023-11-06 22:04:14,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 109 transitions, 910 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 22:04:14,219 INFO L231 Difference]: Finished difference. Result has 64 places, 50 transitions, 360 flow [2023-11-06 22:04:14,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=360, PETRI_PLACES=64, PETRI_TRANSITIONS=50} [2023-11-06 22:04:14,222 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 30 predicate places. [2023-11-06 22:04:14,223 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 50 transitions, 360 flow [2023-11-06 22:04:14,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:14,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:14,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:14,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:04:14,224 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:04:14,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:14,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1047381615, now seen corresponding path program 2 times [2023-11-06 22:04:14,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:14,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317325449] [2023-11-06 22:04:14,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:14,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:14,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:14,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:14,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317325449] [2023-11-06 22:04:14,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317325449] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:14,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077261407] [2023-11-06 22:04:14,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:04:14,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:14,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:14,390 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:14,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:04:14,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:04:14,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:04:14,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:04:14,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:14,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:14,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077261407] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:04:14,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:04:14,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-06 22:04:14,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902371795] [2023-11-06 22:04:14,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:04:14,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:04:14,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:14,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:04:14,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:04:14,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 269 [2023-11-06 22:04:14,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 50 transitions, 360 flow. Second operand has 6 states, 6 states have (on average 116.16666666666667) internal successors, (697), 6 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:14,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:14,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 269 [2023-11-06 22:04:14,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:15,482 INFO L124 PetriNetUnfolderBase]: 1657/2269 cut-off events. [2023-11-06 22:04:15,483 INFO L125 PetriNetUnfolderBase]: For 8330/8330 co-relation queries the response was YES. [2023-11-06 22:04:15,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11152 conditions, 2269 events. 1657/2269 cut-off events. For 8330/8330 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8134 event pairs, 481 based on Foata normal form. 68/2337 useless extension candidates. Maximal degree in co-relation 9804. Up to 1331 conditions per place. [2023-11-06 22:04:15,527 INFO L140 encePairwiseOnDemand]: 264/269 looper letters, 117 selfloop transitions, 8 changer transitions 0/125 dead transitions. [2023-11-06 22:04:15,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 125 transitions, 1108 flow [2023-11-06 22:04:15,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:04:15,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:04:15,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 627 transitions. [2023-11-06 22:04:15,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661710037174721 [2023-11-06 22:04:15,532 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 627 transitions. [2023-11-06 22:04:15,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 627 transitions. [2023-11-06 22:04:15,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:15,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 627 transitions. [2023-11-06 22:04:15,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.4) internal successors, (627), 5 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:15,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:15,541 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:15,542 INFO L175 Difference]: Start difference. First operand has 64 places, 50 transitions, 360 flow. Second operand 5 states and 627 transitions. [2023-11-06 22:04:15,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 125 transitions, 1108 flow [2023-11-06 22:04:15,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 125 transitions, 1034 flow, removed 28 selfloop flow, removed 2 redundant places. [2023-11-06 22:04:15,577 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 393 flow [2023-11-06 22:04:15,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=393, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2023-11-06 22:04:15,579 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 34 predicate places. [2023-11-06 22:04:15,580 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 393 flow [2023-11-06 22:04:15,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.16666666666667) internal successors, (697), 6 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:15,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:15,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:15,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:15,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 22:04:15,788 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:04:15,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:15,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1077936103, now seen corresponding path program 1 times [2023-11-06 22:04:15,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:15,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336622980] [2023-11-06 22:04:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:15,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:16,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:16,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336622980] [2023-11-06 22:04:16,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336622980] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:16,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114850997] [2023-11-06 22:04:16,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:16,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:16,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:16,635 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:16,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c28a328-5a66-43cd-9118-ba0cee8c2e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:04:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:17,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:04:17,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:41,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:03,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:03,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114850997] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:03,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:03,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-11-06 22:06:03,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333342877] [2023-11-06 22:06:03,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:03,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:06:03,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:03,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:06:03,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=165, Unknown=24, NotChecked=0, Total=240 [2023-11-06 22:06:05,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:06:07,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:06:09,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:06:11,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:06:13,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:06:15,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:06:17,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:06:20,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:06:22,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:06:24,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:06:26,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:06:26,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 269 [2023-11-06 22:06:26,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 393 flow. Second operand has 16 states, 16 states have (on average 90.8125) internal successors, (1453), 16 states have internal predecessors, (1453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:26,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:26,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 269 [2023-11-06 22:06:26,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:28,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:06:30,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:06:53,237 WARN L293 SmtUtils]: Spent 10.49s on a formula simplification. DAG size of input: 64 DAG size of output: 57 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 22:07:03,821 WARN L293 SmtUtils]: Spent 7.28s on a formula simplification. DAG size of input: 74 DAG size of output: 52 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 22:07:06,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:08,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:11,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:12,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:14,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:16,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:18,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:21,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:23,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:25,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:28,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:31,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:32,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:34,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:36,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:38,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:40,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:42,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:44,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:45,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:47,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:49,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:51,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:53,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:55,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:57,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:59,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:08:01,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:08:04,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:08:06,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:08:08,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:08:10,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:08:12,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:08:14,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:08:16,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:08:18,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:08:20,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []