./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix044.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb7d89-2a90-4abf-ba96-01446ce8f288/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb7d89-2a90-4abf-ba96-01446ce8f288/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb7d89-2a90-4abf-ba96-01446ce8f288/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb7d89-2a90-4abf-ba96-01446ce8f288/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix044.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb7d89-2a90-4abf-ba96-01446ce8f288/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb7d89-2a90-4abf-ba96-01446ce8f288/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --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 bb408c890b0d52a937687fd58d564d57121120b7f4647156375768e776a678b4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:32:48,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:32:48,348 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb7d89-2a90-4abf-ba96-01446ce8f288/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:32:48,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:32:48,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:32:48,404 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:32:48,405 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:32:48,406 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:32:48,407 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:32:48,411 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:32:48,412 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:32:48,412 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:32:48,413 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:32:48,414 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:32:48,415 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:32:48,415 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:32:48,416 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:32:48,416 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:32:48,416 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:32:48,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:32:48,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:32:48,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:32:48,418 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:32:48,420 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:32:48,420 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:32:48,421 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:32:48,421 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:32:48,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:32:48,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:32:48,423 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:32:48,424 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:32:48,424 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:32:48,424 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:32:48,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:32:48,425 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:32:48,425 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:32:48,425 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:32:48,425 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:32:48,426 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:32:48,426 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_c9eb7d89-2a90-4abf-ba96-01446ce8f288/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb7d89-2a90-4abf-ba96-01446ce8f288/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb408c890b0d52a937687fd58d564d57121120b7f4647156375768e776a678b4 [2023-11-12 02:32:48,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:32:48,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:32:48,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:32:48,708 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:32:48,711 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:32:48,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb7d89-2a90-4abf-ba96-01446ce8f288/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/mix044.opt.i [2023-11-12 02:32:51,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:32:52,311 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:32:52,311 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb7d89-2a90-4abf-ba96-01446ce8f288/sv-benchmarks/c/pthread-wmm/mix044.opt.i [2023-11-12 02:32:52,329 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb7d89-2a90-4abf-ba96-01446ce8f288/bin/uautomizer-verify-uTZkv6EMXl/data/1dda2958f/0ec8b10f684e476a994e85506e794e04/FLAGa4164dba0 [2023-11-12 02:32:52,342 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb7d89-2a90-4abf-ba96-01446ce8f288/bin/uautomizer-verify-uTZkv6EMXl/data/1dda2958f/0ec8b10f684e476a994e85506e794e04 [2023-11-12 02:32:52,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:32:52,347 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:32:52,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:32:52,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:32:52,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:32:52,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:32:52" (1/1) ... [2023-11-12 02:32:52,356 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70f463b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:52, skipping insertion in model container [2023-11-12 02:32:52,357 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:32:52" (1/1) ... [2023-11-12 02:32:52,411 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:32:52,585 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_c9eb7d89-2a90-4abf-ba96-01446ce8f288/sv-benchmarks/c/pthread-wmm/mix044.opt.i[944,957] [2023-11-12 02:32:52,791 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:32:52,802 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:32:52,814 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_c9eb7d89-2a90-4abf-ba96-01446ce8f288/sv-benchmarks/c/pthread-wmm/mix044.opt.i[944,957] [2023-11-12 02:32:52,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:32:52,895 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:32:52,896 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:32:52,906 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:32:52,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:52 WrapperNode [2023-11-12 02:32:52,907 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:32:52,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:32:52,909 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:32:52,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:32:52,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:52" (1/1) ... [2023-11-12 02:32:52,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:52" (1/1) ... [2023-11-12 02:32:52,967 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 167 [2023-11-12 02:32:52,967 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:32:52,968 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:32:52,968 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:32:52,969 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:32:52,978 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:52" (1/1) ... [2023-11-12 02:32:52,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:52" (1/1) ... [2023-11-12 02:32:52,983 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:52" (1/1) ... [2023-11-12 02:32:52,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:52" (1/1) ... [2023-11-12 02:32:52,993 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:52" (1/1) ... [2023-11-12 02:32:52,995 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:52" (1/1) ... [2023-11-12 02:32:53,000 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:52" (1/1) ... [2023-11-12 02:32:53,012 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:52" (1/1) ... [2023-11-12 02:32:53,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:32:53,017 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:32:53,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:32:53,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:32:53,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:52" (1/1) ... [2023-11-12 02:32:53,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:32:53,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb7d89-2a90-4abf-ba96-01446ce8f288/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:53,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb7d89-2a90-4abf-ba96-01446ce8f288/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:32:53,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb7d89-2a90-4abf-ba96-01446ce8f288/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:32:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:32:53,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:32:53,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:32:53,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:32:53,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:32:53,123 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:32:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:32:53,123 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:32:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:32:53,124 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:32:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:32:53,124 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-12 02:32:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-12 02:32:53,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:32:53,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:32:53,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:32:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:32:53,127 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:32:53,276 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:32:53,279 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:32:53,757 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:32:53,907 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:32:53,907 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:32:53,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:32:53 BoogieIcfgContainer [2023-11-12 02:32:53,910 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:32:53,912 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:32:53,916 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:32:53,919 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:32:53,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:32:52" (1/3) ... [2023-11-12 02:32:53,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680fe41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:32:53, skipping insertion in model container [2023-11-12 02:32:53,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:52" (2/3) ... [2023-11-12 02:32:53,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680fe41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:32:53, skipping insertion in model container [2023-11-12 02:32:53,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:32:53" (3/3) ... [2023-11-12 02:32:53,925 INFO L112 eAbstractionObserver]: Analyzing ICFG mix044.opt.i [2023-11-12 02:32:53,934 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:32:53,944 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:32:53,944 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:32:53,944 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:32:54,005 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:32:54,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 133 transitions, 282 flow [2023-11-12 02:32:54,108 INFO L124 PetriNetUnfolderBase]: 2/129 cut-off events. [2023-11-12 02:32:54,109 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:32:54,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 129 events. 2/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-11-12 02:32:54,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 133 transitions, 282 flow [2023-11-12 02:32:54,120 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 129 transitions, 270 flow [2023-11-12 02:32:54,123 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:32:54,134 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 129 transitions, 270 flow [2023-11-12 02:32:54,137 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 129 transitions, 270 flow [2023-11-12 02:32:54,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 129 transitions, 270 flow [2023-11-12 02:32:54,185 INFO L124 PetriNetUnfolderBase]: 2/129 cut-off events. [2023-11-12 02:32:54,185 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:32:54,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 129 events. 2/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-11-12 02:32:54,191 INFO L119 LiptonReduction]: Number of co-enabled transitions 3168 [2023-11-12 02:32:59,643 INFO L134 LiptonReduction]: Checked pairs total: 8292 [2023-11-12 02:32:59,644 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-11-12 02:32:59,683 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:32:59,691 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=LoopHeads, 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;@7da58a7f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:32:59,698 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-12 02:32:59,706 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:32:59,708 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-11-12 02:32:59,709 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:32:59,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:59,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:59,711 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:32:59,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:59,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1678998905, now seen corresponding path program 1 times [2023-11-12 02:32:59,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:59,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321998604] [2023-11-12 02:32:59,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:59,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:00,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:00,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321998604] [2023-11-12 02:33:00,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321998604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:00,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:00,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:33:00,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742028454] [2023-11-12 02:33:00,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:00,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:33:00,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:00,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:33:00,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:33:00,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 245 [2023-11-12 02:33:00,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:00,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:00,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 245 [2023-11-12 02:33:00,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:01,434 INFO L124 PetriNetUnfolderBase]: 3632/5267 cut-off events. [2023-11-12 02:33:01,435 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-12 02:33:01,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10360 conditions, 5267 events. 3632/5267 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 29162 event pairs, 668 based on Foata normal form. 180/5074 useless extension candidates. Maximal degree in co-relation 10348. Up to 3973 conditions per place. [2023-11-12 02:33:01,481 INFO L140 encePairwiseOnDemand]: 241/245 looper letters, 32 selfloop transitions, 2 changer transitions 4/42 dead transitions. [2023-11-12 02:33:01,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 172 flow [2023-11-12 02:33:01,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:33:01,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:33:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 398 transitions. [2023-11-12 02:33:01,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5414965986394558 [2023-11-12 02:33:01,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 398 transitions. [2023-11-12 02:33:01,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 398 transitions. [2023-11-12 02:33:01,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:01,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 398 transitions. [2023-11-12 02:33:01,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:01,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:01,526 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:01,528 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 74 flow. Second operand 3 states and 398 transitions. [2023-11-12 02:33:01,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 172 flow [2023-11-12 02:33:01,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:33:01,537 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 66 flow [2023-11-12 02:33:01,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2023-11-12 02:33:01,545 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-11-12 02:33:01,545 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 66 flow [2023-11-12 02:33:01,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:01,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:01,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:01,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:33:01,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:33:01,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:01,547 INFO L85 PathProgramCache]: Analyzing trace with hash -130716071, now seen corresponding path program 1 times [2023-11-12 02:33:01,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:01,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406824064] [2023-11-12 02:33:01,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:01,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:01,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:01,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:01,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406824064] [2023-11-12 02:33:02,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406824064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:02,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:02,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:33:02,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038684932] [2023-11-12 02:33:02,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:02,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:33:02,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:02,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:33:02,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:33:02,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 245 [2023-11-12 02:33:02,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:02,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:02,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 245 [2023-11-12 02:33:02,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:02,927 INFO L124 PetriNetUnfolderBase]: 3797/5444 cut-off events. [2023-11-12 02:33:02,927 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2023-11-12 02:33:02,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11136 conditions, 5444 events. 3797/5444 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 27851 event pairs, 1573 based on Foata normal form. 240/5668 useless extension candidates. Maximal degree in co-relation 11126. Up to 4159 conditions per place. [2023-11-12 02:33:02,973 INFO L140 encePairwiseOnDemand]: 240/245 looper letters, 39 selfloop transitions, 3 changer transitions 23/68 dead transitions. [2023-11-12 02:33:02,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 68 transitions, 290 flow [2023-11-12 02:33:02,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:33:02,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:33:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 642 transitions. [2023-11-12 02:33:02,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5240816326530612 [2023-11-12 02:33:02,976 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 642 transitions. [2023-11-12 02:33:02,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 642 transitions. [2023-11-12 02:33:02,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:02,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 642 transitions. [2023-11-12 02:33:02,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.4) internal successors, (642), 5 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:02,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:02,985 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:02,985 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 66 flow. Second operand 5 states and 642 transitions. [2023-11-12 02:33:02,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 68 transitions, 290 flow [2023-11-12 02:33:02,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 68 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:33:02,988 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 89 flow [2023-11-12 02:33:02,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=89, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2023-11-12 02:33:02,989 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2023-11-12 02:33:02,990 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 89 flow [2023-11-12 02:33:02,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:02,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:02,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:02,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:33:02,991 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:33:02,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:02,991 INFO L85 PathProgramCache]: Analyzing trace with hash 242742753, now seen corresponding path program 1 times [2023-11-12 02:33:02,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:02,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002780709] [2023-11-12 02:33:02,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:02,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:04,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:04,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:04,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002780709] [2023-11-12 02:33:04,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002780709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:04,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:04,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:33:04,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064267737] [2023-11-12 02:33:04,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:04,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:33:04,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:04,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:33:04,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:33:04,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-11-12 02:33:04,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 89 flow. Second operand has 6 states, 6 states have (on average 106.16666666666667) internal successors, (637), 6 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:04,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:04,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-11-12 02:33:04,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:07,364 INFO L124 PetriNetUnfolderBase]: 11006/15157 cut-off events. [2023-11-12 02:33:07,365 INFO L125 PetriNetUnfolderBase]: For 5812/5812 co-relation queries the response was YES. [2023-11-12 02:33:07,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35337 conditions, 15157 events. 11006/15157 cut-off events. For 5812/5812 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 76364 event pairs, 1443 based on Foata normal form. 646/15803 useless extension candidates. Maximal degree in co-relation 35324. Up to 9713 conditions per place. [2023-11-12 02:33:07,508 INFO L140 encePairwiseOnDemand]: 232/245 looper letters, 52 selfloop transitions, 14 changer transitions 41/107 dead transitions. [2023-11-12 02:33:07,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 107 transitions, 523 flow [2023-11-12 02:33:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:33:07,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:33:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 832 transitions. [2023-11-12 02:33:07,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.485131195335277 [2023-11-12 02:33:07,512 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 832 transitions. [2023-11-12 02:33:07,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 832 transitions. [2023-11-12 02:33:07,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:07,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 832 transitions. [2023-11-12 02:33:07,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.85714285714286) internal successors, (832), 7 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:07,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:07,522 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:07,523 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 89 flow. Second operand 7 states and 832 transitions. [2023-11-12 02:33:07,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 107 transitions, 523 flow [2023-11-12 02:33:07,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 107 transitions, 512 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-12 02:33:07,689 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 228 flow [2023-11-12 02:33:07,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=228, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-11-12 02:33:07,691 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2023-11-12 02:33:07,694 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 228 flow [2023-11-12 02:33:07,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.16666666666667) internal successors, (637), 6 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:07,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:07,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:07,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:33:07,696 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:33:07,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:07,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1189554595, now seen corresponding path program 1 times [2023-11-12 02:33:07,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:07,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515029610] [2023-11-12 02:33:07,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:07,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:08,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:08,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515029610] [2023-11-12 02:33:08,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515029610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:08,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:08,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:33:08,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848733002] [2023-11-12 02:33:08,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:08,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:33:08,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:08,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:33:08,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:33:08,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 245 [2023-11-12 02:33:08,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:08,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:08,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 245 [2023-11-12 02:33:08,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:10,879 INFO L124 PetriNetUnfolderBase]: 9179/12900 cut-off events. [2023-11-12 02:33:10,879 INFO L125 PetriNetUnfolderBase]: For 19800/19836 co-relation queries the response was YES. [2023-11-12 02:33:10,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42567 conditions, 12900 events. 9179/12900 cut-off events. For 19800/19836 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 66792 event pairs, 1931 based on Foata normal form. 580/13452 useless extension candidates. Maximal degree in co-relation 42548. Up to 6477 conditions per place. [2023-11-12 02:33:11,012 INFO L140 encePairwiseOnDemand]: 234/245 looper letters, 53 selfloop transitions, 11 changer transitions 37/103 dead transitions. [2023-11-12 02:33:11,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 103 transitions, 716 flow [2023-11-12 02:33:11,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:33:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:33:11,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 821 transitions. [2023-11-12 02:33:11,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787172011661808 [2023-11-12 02:33:11,017 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 821 transitions. [2023-11-12 02:33:11,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 821 transitions. [2023-11-12 02:33:11,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:11,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 821 transitions. [2023-11-12 02:33:11,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.28571428571429) internal successors, (821), 7 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:11,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:11,029 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:11,029 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 228 flow. Second operand 7 states and 821 transitions. [2023-11-12 02:33:11,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 103 transitions, 716 flow [2023-11-12 02:33:11,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 103 transitions, 710 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-12 02:33:11,207 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 340 flow [2023-11-12 02:33:11,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=340, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2023-11-12 02:33:11,210 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2023-11-12 02:33:11,210 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 340 flow [2023-11-12 02:33:11,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:11,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:11,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:11,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:33:11,212 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:33:11,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:11,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1756927353, now seen corresponding path program 1 times [2023-11-12 02:33:11,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:11,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010185262] [2023-11-12 02:33:11,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:11,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:13,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:13,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010185262] [2023-11-12 02:33:13,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010185262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:13,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:13,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:33:13,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778805673] [2023-11-12 02:33:13,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:13,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:33:13,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:13,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:33:13,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:33:13,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 245 [2023-11-12 02:33:13,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 103.14285714285714) internal successors, (722), 7 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:13,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:13,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 245 [2023-11-12 02:33:13,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:15,724 INFO L124 PetriNetUnfolderBase]: 10635/14688 cut-off events. [2023-11-12 02:33:15,724 INFO L125 PetriNetUnfolderBase]: For 45041/45041 co-relation queries the response was YES. [2023-11-12 02:33:15,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55621 conditions, 14688 events. 10635/14688 cut-off events. For 45041/45041 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 73743 event pairs, 1165 based on Foata normal form. 400/15088 useless extension candidates. Maximal degree in co-relation 55595. Up to 8451 conditions per place. [2023-11-12 02:33:15,833 INFO L140 encePairwiseOnDemand]: 232/245 looper letters, 107 selfloop transitions, 44 changer transitions 51/202 dead transitions. [2023-11-12 02:33:15,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 202 transitions, 1740 flow [2023-11-12 02:33:15,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:33:15,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-12 02:33:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1258 transitions. [2023-11-12 02:33:15,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46679035250463824 [2023-11-12 02:33:15,840 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1258 transitions. [2023-11-12 02:33:15,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1258 transitions. [2023-11-12 02:33:15,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:15,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1258 transitions. [2023-11-12 02:33:15,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 114.36363636363636) internal successors, (1258), 11 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:15,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 245.0) internal successors, (2940), 12 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:15,852 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 245.0) internal successors, (2940), 12 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:15,852 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 340 flow. Second operand 11 states and 1258 transitions. [2023-11-12 02:33:15,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 202 transitions, 1740 flow [2023-11-12 02:33:16,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 202 transitions, 1709 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-12 02:33:16,332 INFO L231 Difference]: Finished difference. Result has 73 places, 89 transitions, 918 flow [2023-11-12 02:33:16,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=918, PETRI_PLACES=73, PETRI_TRANSITIONS=89} [2023-11-12 02:33:16,333 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2023-11-12 02:33:16,334 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 89 transitions, 918 flow [2023-11-12 02:33:16,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 103.14285714285714) internal successors, (722), 7 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:16,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:16,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:16,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:33:16,335 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:33:16,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:16,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1069798477, now seen corresponding path program 2 times [2023-11-12 02:33:16,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:16,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51916035] [2023-11-12 02:33:16,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:16,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:17,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:17,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51916035] [2023-11-12 02:33:17,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51916035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:17,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:17,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:33:17,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337118397] [2023-11-12 02:33:17,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:17,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:33:17,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:17,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:33:17,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:33:17,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 245 [2023-11-12 02:33:17,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 918 flow. Second operand has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:17,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:17,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 245 [2023-11-12 02:33:17,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:19,324 INFO L124 PetriNetUnfolderBase]: 8245/11869 cut-off events. [2023-11-12 02:33:19,325 INFO L125 PetriNetUnfolderBase]: For 65781/66493 co-relation queries the response was YES. [2023-11-12 02:33:19,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53902 conditions, 11869 events. 8245/11869 cut-off events. For 65781/66493 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 65869 event pairs, 2033 based on Foata normal form. 783/12334 useless extension candidates. Maximal degree in co-relation 53867. Up to 7855 conditions per place. [2023-11-12 02:33:19,484 INFO L140 encePairwiseOnDemand]: 239/245 looper letters, 80 selfloop transitions, 14 changer transitions 21/137 dead transitions. [2023-11-12 02:33:19,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 137 transitions, 1505 flow [2023-11-12 02:33:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:33:19,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:33:19,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 755 transitions. [2023-11-12 02:33:19,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136054421768708 [2023-11-12 02:33:19,489 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 755 transitions. [2023-11-12 02:33:19,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 755 transitions. [2023-11-12 02:33:19,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:19,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 755 transitions. [2023-11-12 02:33:19,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.83333333333333) internal successors, (755), 6 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:19,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:19,497 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:19,498 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 918 flow. Second operand 6 states and 755 transitions. [2023-11-12 02:33:19,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 137 transitions, 1505 flow [2023-11-12 02:33:20,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 137 transitions, 1449 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-11-12 02:33:20,384 INFO L231 Difference]: Finished difference. Result has 73 places, 92 transitions, 956 flow [2023-11-12 02:33:20,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=956, PETRI_PLACES=73, PETRI_TRANSITIONS=92} [2023-11-12 02:33:20,385 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2023-11-12 02:33:20,385 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 92 transitions, 956 flow [2023-11-12 02:33:20,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:20,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:20,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:20,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:33:20,386 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:33:20,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:20,387 INFO L85 PathProgramCache]: Analyzing trace with hash -396796408, now seen corresponding path program 1 times [2023-11-12 02:33:20,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:20,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166181460] [2023-11-12 02:33:20,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:20,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:21,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:21,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:21,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166181460] [2023-11-12 02:33:21,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166181460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:21,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:21,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:33:21,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451960487] [2023-11-12 02:33:21,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:21,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:33:21,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:21,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:33:21,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:33:21,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 245 [2023-11-12 02:33:21,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 92 transitions, 956 flow. Second operand has 7 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:21,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:21,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 245 [2023-11-12 02:33:21,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:22,953 INFO L124 PetriNetUnfolderBase]: 7704/11103 cut-off events. [2023-11-12 02:33:22,953 INFO L125 PetriNetUnfolderBase]: For 53773/54437 co-relation queries the response was YES. [2023-11-12 02:33:23,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50729 conditions, 11103 events. 7704/11103 cut-off events. For 53773/54437 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 61087 event pairs, 1373 based on Foata normal form. 309/11034 useless extension candidates. Maximal degree in co-relation 50693. Up to 5532 conditions per place. [2023-11-12 02:33:23,083 INFO L140 encePairwiseOnDemand]: 238/245 looper letters, 94 selfloop transitions, 30 changer transitions 19/165 dead transitions. [2023-11-12 02:33:23,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 165 transitions, 1810 flow [2023-11-12 02:33:23,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:33:23,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:33:23,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 992 transitions. [2023-11-12 02:33:23,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061224489795918 [2023-11-12 02:33:23,089 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 992 transitions. [2023-11-12 02:33:23,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 992 transitions. [2023-11-12 02:33:23,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:23,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 992 transitions. [2023-11-12 02:33:23,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:23,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:23,100 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:23,101 INFO L175 Difference]: Start difference. First operand has 73 places, 92 transitions, 956 flow. Second operand 8 states and 992 transitions. [2023-11-12 02:33:23,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 165 transitions, 1810 flow [2023-11-12 02:33:23,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 165 transitions, 1776 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-12 02:33:23,527 INFO L231 Difference]: Finished difference. Result has 77 places, 100 transitions, 1111 flow [2023-11-12 02:33:23,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1111, PETRI_PLACES=77, PETRI_TRANSITIONS=100} [2023-11-12 02:33:23,529 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2023-11-12 02:33:23,529 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 100 transitions, 1111 flow [2023-11-12 02:33:23,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:23,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:23,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:23,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:33:23,530 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:33:23,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:23,531 INFO L85 PathProgramCache]: Analyzing trace with hash -664514356, now seen corresponding path program 1 times [2023-11-12 02:33:23,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:23,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346181091] [2023-11-12 02:33:23,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:23,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:23,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:23,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:23,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346181091] [2023-11-12 02:33:23,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346181091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:23,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:23,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:33:23,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592307879] [2023-11-12 02:33:23,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:23,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:33:23,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:23,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:33:23,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:33:23,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 245 [2023-11-12 02:33:23,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 100 transitions, 1111 flow. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:23,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:23,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 245 [2023-11-12 02:33:23,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:24,850 INFO L124 PetriNetUnfolderBase]: 4580/6728 cut-off events. [2023-11-12 02:33:24,850 INFO L125 PetriNetUnfolderBase]: For 43874/44922 co-relation queries the response was YES. [2023-11-12 02:33:24,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32197 conditions, 6728 events. 4580/6728 cut-off events. For 43874/44922 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 36622 event pairs, 1159 based on Foata normal form. 419/6861 useless extension candidates. Maximal degree in co-relation 32160. Up to 5436 conditions per place. [2023-11-12 02:33:24,917 INFO L140 encePairwiseOnDemand]: 239/245 looper letters, 113 selfloop transitions, 5 changer transitions 0/144 dead transitions. [2023-11-12 02:33:24,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 144 transitions, 1825 flow [2023-11-12 02:33:24,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:33:24,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:33:24,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-11-12 02:33:24,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5251700680272109 [2023-11-12 02:33:24,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-11-12 02:33:24,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-11-12 02:33:24,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:24,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-11-12 02:33:24,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:24,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:24,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:24,933 INFO L175 Difference]: Start difference. First operand has 77 places, 100 transitions, 1111 flow. Second operand 3 states and 386 transitions. [2023-11-12 02:33:24,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 144 transitions, 1825 flow [2023-11-12 02:33:25,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 144 transitions, 1801 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-12 02:33:25,083 INFO L231 Difference]: Finished difference. Result has 75 places, 100 transitions, 1082 flow [2023-11-12 02:33:25,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1082, PETRI_PLACES=75, PETRI_TRANSITIONS=100} [2023-11-12 02:33:25,088 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2023-11-12 02:33:25,088 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 100 transitions, 1082 flow [2023-11-12 02:33:25,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:25,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:25,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:25,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:33:25,089 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:33:25,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:25,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1085080295, now seen corresponding path program 1 times [2023-11-12 02:33:25,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:25,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095859079] [2023-11-12 02:33:25,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:25,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:25,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:25,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:25,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095859079] [2023-11-12 02:33:25,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095859079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:25,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:25,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:33:25,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407313148] [2023-11-12 02:33:25,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:25,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:33:25,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:25,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:33:25,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:33:25,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 245 [2023-11-12 02:33:25,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 100 transitions, 1082 flow. Second operand has 4 states, 4 states have (on average 119.25) internal successors, (477), 4 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:25,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:25,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 245 [2023-11-12 02:33:25,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:25,995 INFO L124 PetriNetUnfolderBase]: 2348/3649 cut-off events. [2023-11-12 02:33:25,995 INFO L125 PetriNetUnfolderBase]: For 21864/22465 co-relation queries the response was YES. [2023-11-12 02:33:26,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18609 conditions, 3649 events. 2348/3649 cut-off events. For 21864/22465 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 19292 event pairs, 359 based on Foata normal form. 451/3957 useless extension candidates. Maximal degree in co-relation 18572. Up to 1801 conditions per place. [2023-11-12 02:33:26,027 INFO L140 encePairwiseOnDemand]: 239/245 looper letters, 150 selfloop transitions, 9 changer transitions 0/185 dead transitions. [2023-11-12 02:33:26,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 185 transitions, 2357 flow [2023-11-12 02:33:26,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:33:26,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:33:26,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 516 transitions. [2023-11-12 02:33:26,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2023-11-12 02:33:26,032 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 516 transitions. [2023-11-12 02:33:26,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 516 transitions. [2023-11-12 02:33:26,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:26,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 516 transitions. [2023-11-12 02:33:26,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:26,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:26,038 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:26,038 INFO L175 Difference]: Start difference. First operand has 75 places, 100 transitions, 1082 flow. Second operand 4 states and 516 transitions. [2023-11-12 02:33:26,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 185 transitions, 2357 flow [2023-11-12 02:33:26,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 185 transitions, 2344 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-12 02:33:26,116 INFO L231 Difference]: Finished difference. Result has 78 places, 102 transitions, 1092 flow [2023-11-12 02:33:26,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1092, PETRI_PLACES=78, PETRI_TRANSITIONS=102} [2023-11-12 02:33:26,117 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2023-11-12 02:33:26,118 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 102 transitions, 1092 flow [2023-11-12 02:33:26,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.25) internal successors, (477), 4 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:26,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:26,119 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] [2023-11-12 02:33:26,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:33:26,119 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:33:26,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:26,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1299998127, now seen corresponding path program 1 times [2023-11-12 02:33:26,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:26,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667761602] [2023-11-12 02:33:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:26,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:27,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:27,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:27,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667761602] [2023-11-12 02:33:27,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667761602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:27,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:27,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:33:27,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907933678] [2023-11-12 02:33:27,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:27,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:33:27,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:27,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:33:27,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:33:27,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 245 [2023-11-12 02:33:27,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 102 transitions, 1092 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:27,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:27,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 245 [2023-11-12 02:33:27,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:28,059 INFO L124 PetriNetUnfolderBase]: 3570/5526 cut-off events. [2023-11-12 02:33:28,060 INFO L125 PetriNetUnfolderBase]: For 29531/29707 co-relation queries the response was YES. [2023-11-12 02:33:28,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28887 conditions, 5526 events. 3570/5526 cut-off events. For 29531/29707 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 29491 event pairs, 724 based on Foata normal form. 154/5632 useless extension candidates. Maximal degree in co-relation 28848. Up to 2604 conditions per place. [2023-11-12 02:33:28,097 INFO L140 encePairwiseOnDemand]: 238/245 looper letters, 107 selfloop transitions, 18 changer transitions 45/176 dead transitions. [2023-11-12 02:33:28,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 176 transitions, 2014 flow [2023-11-12 02:33:28,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:33:28,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:33:28,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 709 transitions. [2023-11-12 02:33:28,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.482312925170068 [2023-11-12 02:33:28,100 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 709 transitions. [2023-11-12 02:33:28,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 709 transitions. [2023-11-12 02:33:28,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:28,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 709 transitions. [2023-11-12 02:33:28,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.16666666666667) internal successors, (709), 6 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:28,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:28,105 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:28,105 INFO L175 Difference]: Start difference. First operand has 78 places, 102 transitions, 1092 flow. Second operand 6 states and 709 transitions. [2023-11-12 02:33:28,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 176 transitions, 2014 flow [2023-11-12 02:33:28,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 176 transitions, 1968 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-11-12 02:33:28,212 INFO L231 Difference]: Finished difference. Result has 85 places, 93 transitions, 1034 flow [2023-11-12 02:33:28,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1034, PETRI_PLACES=85, PETRI_TRANSITIONS=93} [2023-11-12 02:33:28,214 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2023-11-12 02:33:28,214 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 93 transitions, 1034 flow [2023-11-12 02:33:28,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:28,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:28,215 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] [2023-11-12 02:33:28,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:33:28,215 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:33:28,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:28,215 INFO L85 PathProgramCache]: Analyzing trace with hash -216691022, now seen corresponding path program 1 times [2023-11-12 02:33:28,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:28,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041087798] [2023-11-12 02:33:28,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:28,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:28,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:28,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:28,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041087798] [2023-11-12 02:33:28,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041087798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:28,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:28,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:33:28,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592611749] [2023-11-12 02:33:28,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:28,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:33:28,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:28,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:33:28,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:33:28,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 245 [2023-11-12 02:33:28,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 93 transitions, 1034 flow. Second operand has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:28,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:28,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 245 [2023-11-12 02:33:28,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:28,911 INFO L124 PetriNetUnfolderBase]: 1493/2398 cut-off events. [2023-11-12 02:33:28,911 INFO L125 PetriNetUnfolderBase]: For 14083/14590 co-relation queries the response was YES. [2023-11-12 02:33:28,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12339 conditions, 2398 events. 1493/2398 cut-off events. For 14083/14590 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 12615 event pairs, 210 based on Foata normal form. 360/2662 useless extension candidates. Maximal degree in co-relation 12296. Up to 1007 conditions per place. [2023-11-12 02:33:28,933 INFO L140 encePairwiseOnDemand]: 239/245 looper letters, 142 selfloop transitions, 13 changer transitions 3/174 dead transitions. [2023-11-12 02:33:28,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 174 transitions, 2259 flow [2023-11-12 02:33:28,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:33:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:33:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 644 transitions. [2023-11-12 02:33:28,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257142857142857 [2023-11-12 02:33:28,937 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 644 transitions. [2023-11-12 02:33:28,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 644 transitions. [2023-11-12 02:33:28,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:28,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 644 transitions. [2023-11-12 02:33:28,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:28,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:28,943 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:28,944 INFO L175 Difference]: Start difference. First operand has 85 places, 93 transitions, 1034 flow. Second operand 5 states and 644 transitions. [2023-11-12 02:33:28,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 174 transitions, 2259 flow [2023-11-12 02:33:28,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 174 transitions, 2179 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-11-12 02:33:28,994 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 970 flow [2023-11-12 02:33:28,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=970, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2023-11-12 02:33:28,995 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 39 predicate places. [2023-11-12 02:33:28,996 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 970 flow [2023-11-12 02:33:28,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:28,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:28,997 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] [2023-11-12 02:33:28,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:33:28,997 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:33:28,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:28,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1509210212, now seen corresponding path program 1 times [2023-11-12 02:33:28,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:28,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441386300] [2023-11-12 02:33:28,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:28,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:30,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:30,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:30,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441386300] [2023-11-12 02:33:30,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441386300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:30,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:30,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:33:30,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314390727] [2023-11-12 02:33:30,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:30,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:33:30,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:30,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:33:30,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:33:30,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 245 [2023-11-12 02:33:30,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 970 flow. Second operand has 8 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:30,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:30,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 245 [2023-11-12 02:33:30,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:31,726 INFO L124 PetriNetUnfolderBase]: 3004/4733 cut-off events. [2023-11-12 02:33:31,727 INFO L125 PetriNetUnfolderBase]: For 29200/29363 co-relation queries the response was YES. [2023-11-12 02:33:31,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26116 conditions, 4733 events. 3004/4733 cut-off events. For 29200/29363 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 25872 event pairs, 216 based on Foata normal form. 100/4803 useless extension candidates. Maximal degree in co-relation 26075. Up to 2069 conditions per place. [2023-11-12 02:33:31,758 INFO L140 encePairwiseOnDemand]: 232/245 looper letters, 148 selfloop transitions, 81 changer transitions 67/300 dead transitions. [2023-11-12 02:33:31,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 300 transitions, 3689 flow [2023-11-12 02:33:31,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:33:31,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-12 02:33:31,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1362 transitions. [2023-11-12 02:33:31,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463265306122449 [2023-11-12 02:33:31,764 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1362 transitions. [2023-11-12 02:33:31,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1362 transitions. [2023-11-12 02:33:31,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:31,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1362 transitions. [2023-11-12 02:33:31,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 113.5) internal successors, (1362), 12 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:31,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 245.0) internal successors, (3185), 13 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:31,776 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 245.0) internal successors, (3185), 13 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:31,777 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 970 flow. Second operand 12 states and 1362 transitions. [2023-11-12 02:33:31,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 300 transitions, 3689 flow [2023-11-12 02:33:31,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 300 transitions, 3408 flow, removed 48 selfloop flow, removed 4 redundant places. [2023-11-12 02:33:31,909 INFO L231 Difference]: Finished difference. Result has 98 places, 142 transitions, 1937 flow [2023-11-12 02:33:31,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1937, PETRI_PLACES=98, PETRI_TRANSITIONS=142} [2023-11-12 02:33:31,910 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2023-11-12 02:33:31,910 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 142 transitions, 1937 flow [2023-11-12 02:33:31,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:31,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:31,911 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] [2023-11-12 02:33:31,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:33:31,912 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:33:31,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:31,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1702853910, now seen corresponding path program 2 times [2023-11-12 02:33:31,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:31,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408849745] [2023-11-12 02:33:31,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:31,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:32,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:32,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408849745] [2023-11-12 02:33:32,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408849745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:32,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:32,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:33:32,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533827186] [2023-11-12 02:33:32,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:32,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:33:32,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:32,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:33:32,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:33:32,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 245 [2023-11-12 02:33:32,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 142 transitions, 1937 flow. Second operand has 6 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:32,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:32,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 245 [2023-11-12 02:33:32,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:32,688 INFO L124 PetriNetUnfolderBase]: 1770/2807 cut-off events. [2023-11-12 02:33:32,688 INFO L125 PetriNetUnfolderBase]: For 23773/24469 co-relation queries the response was YES. [2023-11-12 02:33:32,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16607 conditions, 2807 events. 1770/2807 cut-off events. For 23773/24469 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 15756 event pairs, 186 based on Foata normal form. 371/3076 useless extension candidates. Maximal degree in co-relation 16562. Up to 1280 conditions per place. [2023-11-12 02:33:32,710 INFO L140 encePairwiseOnDemand]: 239/245 looper letters, 184 selfloop transitions, 17 changer transitions 46/272 dead transitions. [2023-11-12 02:33:32,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 272 transitions, 4293 flow [2023-11-12 02:33:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:33:32,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:33:32,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 759 transitions. [2023-11-12 02:33:32,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163265306122449 [2023-11-12 02:33:32,715 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 759 transitions. [2023-11-12 02:33:32,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 759 transitions. [2023-11-12 02:33:32,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:32,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 759 transitions. [2023-11-12 02:33:32,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.5) internal successors, (759), 6 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:32,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:32,722 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:32,722 INFO L175 Difference]: Start difference. First operand has 98 places, 142 transitions, 1937 flow. Second operand 6 states and 759 transitions. [2023-11-12 02:33:32,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 272 transitions, 4293 flow [2023-11-12 02:33:32,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 272 transitions, 4128 flow, removed 75 selfloop flow, removed 8 redundant places. [2023-11-12 02:33:32,859 INFO L231 Difference]: Finished difference. Result has 92 places, 120 transitions, 1602 flow [2023-11-12 02:33:32,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1602, PETRI_PLACES=92, PETRI_TRANSITIONS=120} [2023-11-12 02:33:32,860 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 49 predicate places. [2023-11-12 02:33:32,861 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 120 transitions, 1602 flow [2023-11-12 02:33:32,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:32,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:32,862 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, 1, 1, 1, 1] [2023-11-12 02:33:32,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:33:32,862 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:33:32,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:32,863 INFO L85 PathProgramCache]: Analyzing trace with hash -224908515, now seen corresponding path program 1 times [2023-11-12 02:33:32,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:32,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622099995] [2023-11-12 02:33:32,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:32,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:33,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:33,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622099995] [2023-11-12 02:33:33,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622099995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:33,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:33,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:33:33,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319558385] [2023-11-12 02:33:33,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:33,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:33:33,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:33,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:33:33,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:33:33,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 245 [2023-11-12 02:33:33,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 120 transitions, 1602 flow. Second operand has 6 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:33,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:33,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 245 [2023-11-12 02:33:33,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand