./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0b6ad05084ff5d70a22ef215b05587fd59d1867832386446579778aa62df8d63 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:55:03,267 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:55:03,426 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:55:03,437 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:55:03,438 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:55:03,489 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:55:03,490 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:55:03,490 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:55:03,492 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:55:03,498 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:55:03,500 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:55:03,500 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:55:03,501 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:55:03,504 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:55:03,504 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:55:03,505 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:55:03,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:55:03,506 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:55:03,507 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:55:03,507 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:55:03,508 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:55:03,509 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:55:03,509 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:55:03,510 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:55:03,510 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:55:03,512 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:55:03,512 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:55:03,513 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:55:03,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:55:03,514 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:55:03,516 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:55:03,516 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:55:03,517 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:55:03,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:55:03,517 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:55:03,518 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:55:03,518 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:55:03,519 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:55:03,519 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:55:03,519 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_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b6ad05084ff5d70a22ef215b05587fd59d1867832386446579778aa62df8d63 [2023-11-06 21:55:03,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:55:03,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:55:03,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:55:03,933 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:55:03,934 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:55:03,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-06 21:55:07,631 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:55:07,927 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:55:07,948 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/sv-benchmarks/c/pthread-wmm/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-06 21:55:07,973 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/bin/uautomizer-verify-WvqO1wxjHP/data/25aa4557d/f3352e843a9140699618ba5b6d3df6cc/FLAGeb1b864a6 [2023-11-06 21:55:07,992 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/bin/uautomizer-verify-WvqO1wxjHP/data/25aa4557d/f3352e843a9140699618ba5b6d3df6cc [2023-11-06 21:55:08,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:55:08,003 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:55:08,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:55:08,007 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:55:08,013 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:55:08,014 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:55:07" (1/1) ... [2023-11-06 21:55:08,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67964664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:08, skipping insertion in model container [2023-11-06 21:55:08,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:55:07" (1/1) ... [2023-11-06 21:55:08,101 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:55:08,288 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_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/sv-benchmarks/c/pthread-wmm/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[996,1009] [2023-11-06 21:55:08,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:55:08,666 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:55:08,683 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_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/sv-benchmarks/c/pthread-wmm/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[996,1009] [2023-11-06 21:55:08,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:55:08,830 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:55:08,831 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:55:08,840 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:55:08,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:08 WrapperNode [2023-11-06 21:55:08,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:55:08,843 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:55:08,843 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:55:08,843 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:55:08,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:08" (1/1) ... [2023-11-06 21:55:08,896 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:08" (1/1) ... [2023-11-06 21:55:08,963 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 128 [2023-11-06 21:55:08,963 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:55:08,964 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:55:08,965 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:55:08,965 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:55:08,980 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:08" (1/1) ... [2023-11-06 21:55:08,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:08" (1/1) ... [2023-11-06 21:55:08,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:08" (1/1) ... [2023-11-06 21:55:08,999 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:08" (1/1) ... [2023-11-06 21:55:09,010 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:08" (1/1) ... [2023-11-06 21:55:09,026 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:08" (1/1) ... [2023-11-06 21:55:09,029 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:08" (1/1) ... [2023-11-06 21:55:09,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:08" (1/1) ... [2023-11-06 21:55:09,049 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:55:09,050 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:55:09,050 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:55:09,050 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:55:09,051 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:08" (1/1) ... [2023-11-06 21:55:09,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:55:09,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:55:09,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:55:09,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:55:09,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:55:09,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 21:55:09,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:55:09,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:55:09,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:55:09,223 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 21:55:09,223 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 21:55:09,224 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 21:55:09,224 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 21:55:09,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:55:09,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 21:55:09,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:55:09,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:55:09,230 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:55:09,458 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:55:09,463 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:55:09,889 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:55:10,115 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:55:10,115 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:55:10,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:55:10 BoogieIcfgContainer [2023-11-06 21:55:10,119 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:55:10,122 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:55:10,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:55:10,127 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:55:10,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:55:07" (1/3) ... [2023-11-06 21:55:10,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e275c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:55:10, skipping insertion in model container [2023-11-06 21:55:10,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:08" (2/3) ... [2023-11-06 21:55:10,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e275c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:55:10, skipping insertion in model container [2023-11-06 21:55:10,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:55:10" (3/3) ... [2023-11-06 21:55:10,131 INFO L112 eAbstractionObserver]: Analyzing ICFG safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-06 21:55:10,143 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:55:10,158 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:55:10,158 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 21:55:10,159 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:55:10,278 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 21:55:10,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 90 transitions, 188 flow [2023-11-06 21:55:10,416 INFO L124 PetriNetUnfolderBase]: 2/88 cut-off events. [2023-11-06 21:55:10,417 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:55:10,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-11-06 21:55:10,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 90 transitions, 188 flow [2023-11-06 21:55:10,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 88 transitions, 182 flow [2023-11-06 21:55:10,438 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:55:10,463 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 88 transitions, 182 flow [2023-11-06 21:55:10,470 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 88 transitions, 182 flow [2023-11-06 21:55:10,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 88 transitions, 182 flow [2023-11-06 21:55:10,523 INFO L124 PetriNetUnfolderBase]: 2/88 cut-off events. [2023-11-06 21:55:10,524 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:55:10,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-11-06 21:55:10,527 INFO L119 LiptonReduction]: Number of co-enabled transitions 1154 [2023-11-06 21:55:16,366 INFO L134 LiptonReduction]: Checked pairs total: 2728 [2023-11-06 21:55:16,366 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-11-06 21:55:16,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:55:16,395 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@701d20cd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:55:16,396 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-06 21:55:16,399 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:55:16,400 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-06 21:55:16,400 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:55:16,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:16,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 21:55:16,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 21:55:16,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:16,409 INFO L85 PathProgramCache]: Analyzing trace with hash 412388, now seen corresponding path program 1 times [2023-11-06 21:55:16,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:16,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309659580] [2023-11-06 21:55:16,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:16,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:16,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:16,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309659580] [2023-11-06 21:55:16,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309659580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:16,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:16,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:55:16,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417186160] [2023-11-06 21:55:16,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:16,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:16,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:17,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:17,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:17,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 175 [2023-11-06 21:55:17,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:17,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:17,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 175 [2023-11-06 21:55:17,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:17,220 INFO L124 PetriNetUnfolderBase]: 111/223 cut-off events. [2023-11-06 21:55:17,220 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:55:17,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 223 events. 111/223 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 956 event pairs, 12 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 427. Up to 166 conditions per place. [2023-11-06 21:55:17,225 INFO L140 encePairwiseOnDemand]: 172/175 looper letters, 19 selfloop transitions, 2 changer transitions 2/25 dead transitions. [2023-11-06 21:55:17,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 25 transitions, 105 flow [2023-11-06 21:55:17,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:17,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:55:17,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2023-11-06 21:55:17,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49142857142857144 [2023-11-06 21:55:17,246 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2023-11-06 21:55:17,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2023-11-06 21:55:17,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:17,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2023-11-06 21:55:17,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:17,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:17,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:17,267 INFO L175 Difference]: Start difference. First operand has 24 places, 17 transitions, 40 flow. Second operand 3 states and 258 transitions. [2023-11-06 21:55:17,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 25 transitions, 105 flow [2023-11-06 21:55:17,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 25 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:55:17,273 INFO L231 Difference]: Finished difference. Result has 23 places, 15 transitions, 38 flow [2023-11-06 21:55:17,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=23, PETRI_TRANSITIONS=15} [2023-11-06 21:55:17,280 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2023-11-06 21:55:17,280 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 15 transitions, 38 flow [2023-11-06 21:55:17,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:17,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:17,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:17,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:55:17,282 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 21:55:17,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:17,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1357655361, now seen corresponding path program 1 times [2023-11-06 21:55:17,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:17,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895001184] [2023-11-06 21:55:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:17,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:19,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:19,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895001184] [2023-11-06 21:55:19,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895001184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:19,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:19,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:55:19,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729493172] [2023-11-06 21:55:19,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:19,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:55:19,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:19,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:55:19,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:55:19,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 175 [2023-11-06 21:55:19,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 15 transitions, 38 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:19,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:19,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 175 [2023-11-06 21:55:19,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:19,475 INFO L124 PetriNetUnfolderBase]: 108/204 cut-off events. [2023-11-06 21:55:19,476 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-06 21:55:19,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 204 events. 108/204 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 710 event pairs, 40 based on Foata normal form. 3/207 useless extension candidates. Maximal degree in co-relation 425. Up to 182 conditions per place. [2023-11-06 21:55:19,481 INFO L140 encePairwiseOnDemand]: 169/175 looper letters, 19 selfloop transitions, 6 changer transitions 0/26 dead transitions. [2023-11-06 21:55:19,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 26 transitions, 116 flow [2023-11-06 21:55:19,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:55:19,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:55:19,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-11-06 21:55:19,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-11-06 21:55:19,490 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-11-06 21:55:19,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-11-06 21:55:19,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:19,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-11-06 21:55:19,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:19,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:19,505 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:19,505 INFO L175 Difference]: Start difference. First operand has 23 places, 15 transitions, 38 flow. Second operand 4 states and 315 transitions. [2023-11-06 21:55:19,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 26 transitions, 116 flow [2023-11-06 21:55:19,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:55:19,508 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 75 flow [2023-11-06 21:55:19,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=75, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2023-11-06 21:55:19,510 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2023-11-06 21:55:19,511 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 75 flow [2023-11-06 21:55:19,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:19,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:19,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:19,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:55:19,520 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 21:55:19,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:19,522 INFO L85 PathProgramCache]: Analyzing trace with hash 862355816, now seen corresponding path program 1 times [2023-11-06 21:55:19,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:19,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356322046] [2023-11-06 21:55:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:19,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:19,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:19,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:19,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356322046] [2023-11-06 21:55:19,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356322046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:19,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:19,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:55:19,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707777958] [2023-11-06 21:55:19,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:19,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:19,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:19,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:19,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:19,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 175 [2023-11-06 21:55:19,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:19,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:19,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 175 [2023-11-06 21:55:19,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:19,835 INFO L124 PetriNetUnfolderBase]: 90/176 cut-off events. [2023-11-06 21:55:19,836 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 21:55:19,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 176 events. 90/176 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 614 event pairs, 22 based on Foata normal form. 3/178 useless extension candidates. Maximal degree in co-relation 458. Up to 128 conditions per place. [2023-11-06 21:55:19,842 INFO L140 encePairwiseOnDemand]: 172/175 looper letters, 20 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-06 21:55:19,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 134 flow [2023-11-06 21:55:19,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:55:19,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2023-11-06 21:55:19,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-11-06 21:55:19,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 250 transitions. [2023-11-06 21:55:19,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 250 transitions. [2023-11-06 21:55:19,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:19,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 250 transitions. [2023-11-06 21:55:19,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:19,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:19,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:19,850 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 75 flow. Second operand 3 states and 250 transitions. [2023-11-06 21:55:19,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 134 flow [2023-11-06 21:55:19,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:55:19,854 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 83 flow [2023-11-06 21:55:19,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-11-06 21:55:19,856 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-11-06 21:55:19,860 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 83 flow [2023-11-06 21:55:19,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:19,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:19,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:19,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:55:19,861 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 21:55:19,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:19,862 INFO L85 PathProgramCache]: Analyzing trace with hash -739002478, now seen corresponding path program 1 times [2023-11-06 21:55:19,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:19,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588946025] [2023-11-06 21:55:19,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:19,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:20,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:20,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588946025] [2023-11-06 21:55:20,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588946025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:20,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:20,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:55:20,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292815826] [2023-11-06 21:55:20,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:20,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:55:20,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:20,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:55:20,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:55:21,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 175 [2023-11-06 21:55:21,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:21,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:21,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 175 [2023-11-06 21:55:21,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:21,269 INFO L124 PetriNetUnfolderBase]: 134/244 cut-off events. [2023-11-06 21:55:21,269 INFO L125 PetriNetUnfolderBase]: For 224/232 co-relation queries the response was YES. [2023-11-06 21:55:21,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 244 events. 134/244 cut-off events. For 224/232 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 934 event pairs, 10 based on Foata normal form. 4/243 useless extension candidates. Maximal degree in co-relation 696. Up to 148 conditions per place. [2023-11-06 21:55:21,274 INFO L140 encePairwiseOnDemand]: 167/175 looper letters, 27 selfloop transitions, 13 changer transitions 0/42 dead transitions. [2023-11-06 21:55:21,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 42 transitions, 244 flow [2023-11-06 21:55:21,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:55:21,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:55:21,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 391 transitions. [2023-11-06 21:55:21,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44685714285714284 [2023-11-06 21:55:21,278 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 391 transitions. [2023-11-06 21:55:21,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 391 transitions. [2023-11-06 21:55:21,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:21,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 391 transitions. [2023-11-06 21:55:21,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:21,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:21,285 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:21,285 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 83 flow. Second operand 5 states and 391 transitions. [2023-11-06 21:55:21,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 42 transitions, 244 flow [2023-11-06 21:55:21,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 42 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:55:21,291 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 186 flow [2023-11-06 21:55:21,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2023-11-06 21:55:21,293 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2023-11-06 21:55:21,294 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 186 flow [2023-11-06 21:55:21,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:21,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:21,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:21,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:55:21,296 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 21:55:21,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:21,297 INFO L85 PathProgramCache]: Analyzing trace with hash 961528720, now seen corresponding path program 2 times [2023-11-06 21:55:21,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:21,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421369390] [2023-11-06 21:55:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:21,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:22,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:22,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:22,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421369390] [2023-11-06 21:55:22,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421369390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:22,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:22,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:55:22,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137328403] [2023-11-06 21:55:22,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:22,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:55:22,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:22,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:55:22,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:55:22,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 175 [2023-11-06 21:55:22,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 72.5) internal successors, (435), 6 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:22,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:22,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 175 [2023-11-06 21:55:22,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:22,750 INFO L124 PetriNetUnfolderBase]: 160/312 cut-off events. [2023-11-06 21:55:22,750 INFO L125 PetriNetUnfolderBase]: For 837/857 co-relation queries the response was YES. [2023-11-06 21:55:22,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1119 conditions, 312 events. 160/312 cut-off events. For 837/857 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1304 event pairs, 20 based on Foata normal form. 25/336 useless extension candidates. Maximal degree in co-relation 1101. Up to 114 conditions per place. [2023-11-06 21:55:22,754 INFO L140 encePairwiseOnDemand]: 168/175 looper letters, 25 selfloop transitions, 7 changer transitions 27/60 dead transitions. [2023-11-06 21:55:22,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 60 transitions, 440 flow [2023-11-06 21:55:22,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:55:22,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:55:22,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 473 transitions. [2023-11-06 21:55:22,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4504761904761905 [2023-11-06 21:55:22,758 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 473 transitions. [2023-11-06 21:55:22,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 473 transitions. [2023-11-06 21:55:22,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:22,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 473 transitions. [2023-11-06 21:55:22,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:22,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 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) [2023-11-06 21:55:22,766 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 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) [2023-11-06 21:55:22,766 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 186 flow. Second operand 6 states and 473 transitions. [2023-11-06 21:55:22,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 60 transitions, 440 flow [2023-11-06 21:55:22,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 60 transitions, 430 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 21:55:22,779 INFO L231 Difference]: Finished difference. Result has 41 places, 19 transitions, 141 flow [2023-11-06 21:55:22,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=41, PETRI_TRANSITIONS=19} [2023-11-06 21:55:22,782 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 17 predicate places. [2023-11-06 21:55:22,782 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 19 transitions, 141 flow [2023-11-06 21:55:22,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.5) internal successors, (435), 6 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:22,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:22,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:22,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:55:22,784 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 21:55:22,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:22,784 INFO L85 PathProgramCache]: Analyzing trace with hash -240574342, now seen corresponding path program 1 times [2023-11-06 21:55:22,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:22,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899882931] [2023-11-06 21:55:22,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:22,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:23,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:23,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:23,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899882931] [2023-11-06 21:55:23,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899882931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:23,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:23,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:55:23,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177655857] [2023-11-06 21:55:23,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:23,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:55:23,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:23,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:55:23,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:55:23,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 175 [2023-11-06 21:55:23,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 19 transitions, 141 flow. Second operand has 5 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:23,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:23,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 175 [2023-11-06 21:55:23,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:23,668 INFO L124 PetriNetUnfolderBase]: 75/147 cut-off events. [2023-11-06 21:55:23,668 INFO L125 PetriNetUnfolderBase]: For 618/619 co-relation queries the response was YES. [2023-11-06 21:55:23,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 147 events. 75/147 cut-off events. For 618/619 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 409 event pairs, 25 based on Foata normal form. 2/149 useless extension candidates. Maximal degree in co-relation 634. Up to 124 conditions per place. [2023-11-06 21:55:23,671 INFO L140 encePairwiseOnDemand]: 170/175 looper letters, 21 selfloop transitions, 6 changer transitions 0/28 dead transitions. [2023-11-06 21:55:23,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 28 transitions, 229 flow [2023-11-06 21:55:23,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:55:23,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:55:23,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 326 transitions. [2023-11-06 21:55:23,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657142857142857 [2023-11-06 21:55:23,675 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 326 transitions. [2023-11-06 21:55:23,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 326 transitions. [2023-11-06 21:55:23,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:23,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 326 transitions. [2023-11-06 21:55:23,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:23,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:23,679 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:23,680 INFO L175 Difference]: Start difference. First operand has 41 places, 19 transitions, 141 flow. Second operand 4 states and 326 transitions. [2023-11-06 21:55:23,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 28 transitions, 229 flow [2023-11-06 21:55:23,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 28 transitions, 185 flow, removed 9 selfloop flow, removed 10 redundant places. [2023-11-06 21:55:23,684 INFO L231 Difference]: Finished difference. Result has 33 places, 21 transitions, 132 flow [2023-11-06 21:55:23,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2023-11-06 21:55:23,685 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2023-11-06 21:55:23,685 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 132 flow [2023-11-06 21:55:23,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:23,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:23,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:23,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:55:23,687 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 21:55:23,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:23,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1054346131, now seen corresponding path program 1 times [2023-11-06 21:55:23,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:23,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085485288] [2023-11-06 21:55:23,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:23,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:23,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:23,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:23,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085485288] [2023-11-06 21:55:23,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085485288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:23,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:23,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:55:23,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395500730] [2023-11-06 21:55:23,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:23,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:55:23,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:23,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:55:23,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:55:23,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 175 [2023-11-06 21:55:23,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:23,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:23,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 175 [2023-11-06 21:55:23,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:24,019 INFO L124 PetriNetUnfolderBase]: 42/100 cut-off events. [2023-11-06 21:55:24,019 INFO L125 PetriNetUnfolderBase]: For 324/328 co-relation queries the response was YES. [2023-11-06 21:55:24,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 100 events. 42/100 cut-off events. For 324/328 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 308 event pairs, 8 based on Foata normal form. 17/115 useless extension candidates. Maximal degree in co-relation 384. Up to 47 conditions per place. [2023-11-06 21:55:24,021 INFO L140 encePairwiseOnDemand]: 170/175 looper letters, 20 selfloop transitions, 3 changer transitions 15/41 dead transitions. [2023-11-06 21:55:24,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 314 flow [2023-11-06 21:55:24,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:55:24,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:55:24,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 404 transitions. [2023-11-06 21:55:24,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617142857142857 [2023-11-06 21:55:24,025 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 404 transitions. [2023-11-06 21:55:24,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 404 transitions. [2023-11-06 21:55:24,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:24,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 404 transitions. [2023-11-06 21:55:24,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:24,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:24,031 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:24,031 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 132 flow. Second operand 5 states and 404 transitions. [2023-11-06 21:55:24,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 314 flow [2023-11-06 21:55:24,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 41 transitions, 292 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-06 21:55:24,035 INFO L231 Difference]: Finished difference. Result has 37 places, 21 transitions, 132 flow [2023-11-06 21:55:24,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=37, PETRI_TRANSITIONS=21} [2023-11-06 21:55:24,036 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2023-11-06 21:55:24,036 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 21 transitions, 132 flow [2023-11-06 21:55:24,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:24,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:24,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:24,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:55:24,037 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 21:55:24,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:24,038 INFO L85 PathProgramCache]: Analyzing trace with hash 160909087, now seen corresponding path program 1 times [2023-11-06 21:55:24,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:24,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723221690] [2023-11-06 21:55:24,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:24,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:24,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:24,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:24,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723221690] [2023-11-06 21:55:24,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723221690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:24,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:24,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:55:24,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095798995] [2023-11-06 21:55:24,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:24,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:55:24,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:24,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:55:24,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:55:24,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 175 [2023-11-06 21:55:24,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 21 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:24,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:24,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 175 [2023-11-06 21:55:24,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:24,369 INFO L124 PetriNetUnfolderBase]: 17/52 cut-off events. [2023-11-06 21:55:24,370 INFO L125 PetriNetUnfolderBase]: For 133/134 co-relation queries the response was YES. [2023-11-06 21:55:24,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 52 events. 17/52 cut-off events. For 133/134 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 4 based on Foata normal form. 6/57 useless extension candidates. Maximal degree in co-relation 203. Up to 21 conditions per place. [2023-11-06 21:55:24,371 INFO L140 encePairwiseOnDemand]: 170/175 looper letters, 18 selfloop transitions, 5 changer transitions 6/32 dead transitions. [2023-11-06 21:55:24,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 256 flow [2023-11-06 21:55:24,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:55:24,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:55:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 472 transitions. [2023-11-06 21:55:24,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44952380952380955 [2023-11-06 21:55:24,375 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 472 transitions. [2023-11-06 21:55:24,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 472 transitions. [2023-11-06 21:55:24,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:24,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 472 transitions. [2023-11-06 21:55:24,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 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) [2023-11-06 21:55:24,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 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) [2023-11-06 21:55:24,382 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 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) [2023-11-06 21:55:24,382 INFO L175 Difference]: Start difference. First operand has 37 places, 21 transitions, 132 flow. Second operand 6 states and 472 transitions. [2023-11-06 21:55:24,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 256 flow [2023-11-06 21:55:24,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 206 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-06 21:55:24,386 INFO L231 Difference]: Finished difference. Result has 38 places, 21 transitions, 116 flow [2023-11-06 21:55:24,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=38, PETRI_TRANSITIONS=21} [2023-11-06 21:55:24,387 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 14 predicate places. [2023-11-06 21:55:24,387 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 21 transitions, 116 flow [2023-11-06 21:55:24,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:24,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:24,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:24,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:55:24,389 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 21:55:24,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:24,390 INFO L85 PathProgramCache]: Analyzing trace with hash 871693292, now seen corresponding path program 1 times [2023-11-06 21:55:24,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:24,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398614199] [2023-11-06 21:55:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:24,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:25,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:25,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:25,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398614199] [2023-11-06 21:55:25,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398614199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:25,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:25,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:55:25,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071485284] [2023-11-06 21:55:25,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:25,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:55:25,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:25,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:55:25,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:55:25,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 175 [2023-11-06 21:55:25,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 21 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 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) [2023-11-06 21:55:25,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:25,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 175 [2023-11-06 21:55:25,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:25,523 INFO L124 PetriNetUnfolderBase]: 15/52 cut-off events. [2023-11-06 21:55:25,523 INFO L125 PetriNetUnfolderBase]: For 100/101 co-relation queries the response was YES. [2023-11-06 21:55:25,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 52 events. 15/52 cut-off events. For 100/101 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 7 based on Foata normal form. 2/53 useless extension candidates. Maximal degree in co-relation 196. Up to 37 conditions per place. [2023-11-06 21:55:25,524 INFO L140 encePairwiseOnDemand]: 171/175 looper letters, 15 selfloop transitions, 3 changer transitions 9/28 dead transitions. [2023-11-06 21:55:25,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 28 transitions, 222 flow [2023-11-06 21:55:25,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:55:25,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:55:25,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2023-11-06 21:55:25,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585714285714286 [2023-11-06 21:55:25,527 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2023-11-06 21:55:25,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2023-11-06 21:55:25,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:25,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2023-11-06 21:55:25,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:25,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:25,532 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:25,532 INFO L175 Difference]: Start difference. First operand has 38 places, 21 transitions, 116 flow. Second operand 4 states and 321 transitions. [2023-11-06 21:55:25,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 28 transitions, 222 flow [2023-11-06 21:55:25,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 182 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-11-06 21:55:25,534 INFO L231 Difference]: Finished difference. Result has 34 places, 17 transitions, 84 flow [2023-11-06 21:55:25,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=34, PETRI_TRANSITIONS=17} [2023-11-06 21:55:25,535 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2023-11-06 21:55:25,535 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 17 transitions, 84 flow [2023-11-06 21:55:25,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 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) [2023-11-06 21:55:25,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:25,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:25,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:55:25,537 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 21:55:25,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:25,537 INFO L85 PathProgramCache]: Analyzing trace with hash 968450302, now seen corresponding path program 2 times [2023-11-06 21:55:25,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:25,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395153869] [2023-11-06 21:55:25,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:25,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:55:25,582 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:55:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:55:25,660 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:55:25,661 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 21:55:25,662 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-06 21:55:25,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-06 21:55:25,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-06 21:55:25,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-06 21:55:25,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-06 21:55:25,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:55:25,666 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:25,674 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 21:55:25,674 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:55:25,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:55:25 BasicIcfg [2023-11-06 21:55:25,730 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:55:25,730 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:55:25,730 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:55:25,731 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:55:25,731 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:55:10" (3/4) ... [2023-11-06 21:55:25,732 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-06 21:55:25,854 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 21:55:25,854 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:55:25,855 INFO L158 Benchmark]: Toolchain (without parser) took 17851.91ms. Allocated memory was 140.5MB in the beginning and 343.9MB in the end (delta: 203.4MB). Free memory was 100.5MB in the beginning and 127.2MB in the end (delta: -26.7MB). Peak memory consumption was 178.1MB. Max. memory is 16.1GB. [2023-11-06 21:55:25,855 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 140.5MB. Free memory is still 84.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:55:25,856 INFO L158 Benchmark]: CACSL2BoogieTranslator took 834.72ms. Allocated memory is still 140.5MB. Free memory was 100.2MB in the beginning and 77.7MB in the end (delta: 22.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 21:55:25,856 INFO L158 Benchmark]: Boogie Procedure Inliner took 121.20ms. Allocated memory is still 140.5MB. Free memory was 77.7MB in the beginning and 75.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:55:25,856 INFO L158 Benchmark]: Boogie Preprocessor took 84.46ms. Allocated memory is still 140.5MB. Free memory was 75.0MB in the beginning and 73.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:55:25,857 INFO L158 Benchmark]: RCFGBuilder took 1069.36ms. Allocated memory was 140.5MB in the beginning and 192.9MB in the end (delta: 52.4MB). Free memory was 72.9MB in the beginning and 131.4MB in the end (delta: -58.5MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2023-11-06 21:55:25,857 INFO L158 Benchmark]: TraceAbstraction took 15607.29ms. Allocated memory was 192.9MB in the beginning and 343.9MB in the end (delta: 151.0MB). Free memory was 131.4MB in the beginning and 133.4MB in the end (delta: -2.0MB). Peak memory consumption was 149.7MB. Max. memory is 16.1GB. [2023-11-06 21:55:25,858 INFO L158 Benchmark]: Witness Printer took 123.78ms. Allocated memory is still 343.9MB. Free memory was 133.4MB in the beginning and 127.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 21:55:25,862 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 140.5MB. Free memory is still 84.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 834.72ms. Allocated memory is still 140.5MB. Free memory was 100.2MB in the beginning and 77.7MB in the end (delta: 22.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 121.20ms. Allocated memory is still 140.5MB. Free memory was 77.7MB in the beginning and 75.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.46ms. Allocated memory is still 140.5MB. Free memory was 75.0MB in the beginning and 73.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1069.36ms. Allocated memory was 140.5MB in the beginning and 192.9MB in the end (delta: 52.4MB). Free memory was 72.9MB in the beginning and 131.4MB in the end (delta: -58.5MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15607.29ms. Allocated memory was 192.9MB in the beginning and 343.9MB in the end (delta: 151.0MB). Free memory was 131.4MB in the beginning and 133.4MB in the end (delta: -2.0MB). Peak memory consumption was 149.7MB. Max. memory is 16.1GB. * Witness Printer took 123.78ms. Allocated memory is still 343.9MB. Free memory was 133.4MB in the beginning and 127.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.9s, 93 PlacesBefore, 24 PlacesAfterwards, 88 TransitionsBefore, 17 TransitionsAfterwards, 1154 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 85 TotalNumberOfCompositions, 2728 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1341, independent: 1224, independent conditional: 0, independent unconditional: 1224, dependent: 117, dependent conditional: 0, dependent unconditional: 117, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 653, independent: 620, independent conditional: 0, independent unconditional: 620, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1341, independent: 604, independent conditional: 0, independent unconditional: 604, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 653, unknown conditional: 0, unknown unconditional: 653] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L711] 0 _Bool main$tmp_guard0; [L712] 0 _Bool main$tmp_guard1; [L714] 0 int x = 0; [L716] 0 int y = 0; [L717] 0 _Bool y$flush_delayed; [L718] 0 int y$mem_tmp; [L719] 0 _Bool y$r_buff0_thd0; [L720] 0 _Bool y$r_buff0_thd1; [L721] 0 _Bool y$r_buff0_thd2; [L722] 0 _Bool y$r_buff1_thd0; [L723] 0 _Bool y$r_buff1_thd1; [L724] 0 _Bool y$r_buff1_thd2; [L725] 0 _Bool y$read_delayed; [L726] 0 int *y$read_delayed_var; [L727] 0 int y$w_buff0; [L728] 0 _Bool y$w_buff0_used; [L729] 0 int y$w_buff1; [L730] 0 _Bool y$w_buff1_used; [L731] 0 _Bool weak$$choice0; [L732] 0 _Bool weak$$choice2; [L792] 0 pthread_t t2009; [L793] FCALL, FORK 0 pthread_create(&t2009, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2009, ((void *)0), P0, ((void *)0))=-1, t2009={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L736] 1 y$w_buff1 = y$w_buff0 [L737] 1 y$w_buff0 = 2 [L738] 1 y$w_buff1_used = y$w_buff0_used [L739] 1 y$w_buff0_used = (_Bool)1 [L740] CALL 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L740] RET 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L741] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L742] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L743] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L744] 1 y$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L794] 0 pthread_t t2010; [L795] FCALL, FORK 0 pthread_create(&t2010, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2010, ((void *)0), P1, ((void *)0))=0, t2009={5:0}, t2010={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L747] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L764] 2 __unbuffered_p1_EAX = x VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L767] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1] [L770] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L771] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L772] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L773] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L774] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1] [L750] 1 y = y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L751] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L752] 1 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L753] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L754] 1 y$r_buff1_thd1 = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] [L757] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L759] 1 return 0; [L777] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L779] 2 return 0; [L797] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L799] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L799] RET 0 assume_abort_if_not(main$tmp_guard0) [L801] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L802] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L803] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L804] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L805] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2009={5:0}, t2010={3:0}, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] [L808] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L809] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L810] 0 y$flush_delayed = weak$$choice2 [L811] 0 y$mem_tmp = y [L812] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L813] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L814] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L815] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L816] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L818] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L819] 0 main$tmp_guard1 = !(y == 2 && __unbuffered_p1_EAX == 1) [L820] 0 y = y$flush_delayed ? y$mem_tmp : y [L821] 0 y$flush_delayed = (_Bool)0 [L823] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 793]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 108 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.3s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 272 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 181 mSDsluCounter, 154 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 95 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 468 IncrementalHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 59 mSDtfsCounter, 468 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=4, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 796 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-06 21:55:25,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7716c4-efdd-4eec-a89d-d61e5228f5fd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE