./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe035_power.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071954a2-ee94-49cc-acda-fa5908a3911c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071954a2-ee94-49cc-acda-fa5908a3911c/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_071954a2-ee94-49cc-acda-fa5908a3911c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071954a2-ee94-49cc-acda-fa5908a3911c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe035_power.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071954a2-ee94-49cc-acda-fa5908a3911c/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_071954a2-ee94-49cc-acda-fa5908a3911c/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 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:08:27,225 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:08:27,315 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071954a2-ee94-49cc-acda-fa5908a3911c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:08:27,322 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:08:27,323 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:08:27,355 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:08:27,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:08:27,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:08:27,358 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:08:27,359 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:08:27,360 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:08:27,361 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:08:27,362 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:08:27,363 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:08:27,364 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:08:27,365 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:08:27,365 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:08:27,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:08:27,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:08:27,368 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:08:27,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:08:27,370 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:08:27,371 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:08:27,372 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:08:27,372 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:08:27,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:08:27,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:08:27,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:08:27,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:08:27,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:08:27,377 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:08:27,378 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:08:27,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:08:27,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:08:27,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:08:27,379 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:08:27,380 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:08:27,380 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:08:27,381 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:08:27,381 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_071954a2-ee94-49cc-acda-fa5908a3911c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071954a2-ee94-49cc-acda-fa5908a3911c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 [2023-11-06 22:08:27,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:08:27,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:08:27,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:08:27,814 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:08:27,815 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:08:27,817 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071954a2-ee94-49cc-acda-fa5908a3911c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/safe035_power.i [2023-11-06 22:08:31,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:08:31,953 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:08:31,954 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071954a2-ee94-49cc-acda-fa5908a3911c/sv-benchmarks/c/pthread-wmm/safe035_power.i [2023-11-06 22:08:31,988 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071954a2-ee94-49cc-acda-fa5908a3911c/bin/uautomizer-verify-WvqO1wxjHP/data/27edac707/c943f346cd894b67aeec7d9134de577f/FLAG81e80b1a9 [2023-11-06 22:08:32,015 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071954a2-ee94-49cc-acda-fa5908a3911c/bin/uautomizer-verify-WvqO1wxjHP/data/27edac707/c943f346cd894b67aeec7d9134de577f [2023-11-06 22:08:32,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:08:32,030 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:08:32,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:08:32,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:08:32,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:08:32,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:08:32" (1/1) ... [2023-11-06 22:08:32,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a586342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:32, skipping insertion in model container [2023-11-06 22:08:32,048 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:08:32" (1/1) ... [2023-11-06 22:08:32,168 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:08:32,387 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_071954a2-ee94-49cc-acda-fa5908a3911c/sv-benchmarks/c/pthread-wmm/safe035_power.i[947,960] [2023-11-06 22:08:32,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:08:32,728 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:08:32,744 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_071954a2-ee94-49cc-acda-fa5908a3911c/sv-benchmarks/c/pthread-wmm/safe035_power.i[947,960] [2023-11-06 22:08:32,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:08:32,887 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:08:32,887 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:08:32,897 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:08:32,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:32 WrapperNode [2023-11-06 22:08:32,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:08:32,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:08:32,900 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:08:32,900 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:08:32,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:32" (1/1) ... [2023-11-06 22:08:32,939 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:32" (1/1) ... [2023-11-06 22:08:32,983 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 172 [2023-11-06 22:08:32,984 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:08:32,985 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:08:32,985 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:08:32,985 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:08:32,998 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:32" (1/1) ... [2023-11-06 22:08:32,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:32" (1/1) ... [2023-11-06 22:08:33,006 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:32" (1/1) ... [2023-11-06 22:08:33,007 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:32" (1/1) ... [2023-11-06 22:08:33,041 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:32" (1/1) ... [2023-11-06 22:08:33,043 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:32" (1/1) ... [2023-11-06 22:08:33,048 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:32" (1/1) ... [2023-11-06 22:08:33,051 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:32" (1/1) ... [2023-11-06 22:08:33,079 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:08:33,080 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:08:33,080 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:08:33,080 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:08:33,081 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:32" (1/1) ... [2023-11-06 22:08:33,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:08:33,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071954a2-ee94-49cc-acda-fa5908a3911c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:33,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071954a2-ee94-49cc-acda-fa5908a3911c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:08:33,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071954a2-ee94-49cc-acda-fa5908a3911c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:08:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:08:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:08:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:08:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:08:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:08:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 22:08:33,229 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 22:08:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 22:08:33,229 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 22:08:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 22:08:33,232 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 22:08:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:08:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:08:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:08:33,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:08:33,236 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:08:33,573 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:08:33,576 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:08:34,208 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:08:34,520 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:08:34,520 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:08:34,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:34 BoogieIcfgContainer [2023-11-06 22:08:34,524 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:08:34,527 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:08:34,527 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:08:34,532 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:08:34,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:08:32" (1/3) ... [2023-11-06 22:08:34,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6636f234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:08:34, skipping insertion in model container [2023-11-06 22:08:34,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:32" (2/3) ... [2023-11-06 22:08:34,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6636f234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:08:34, skipping insertion in model container [2023-11-06 22:08:34,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:34" (3/3) ... [2023-11-06 22:08:34,536 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2023-11-06 22:08:34,548 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:08:34,562 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:08:34,563 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:08:34,563 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:08:34,672 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:08:34,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 115 transitions, 242 flow [2023-11-06 22:08:34,862 INFO L124 PetriNetUnfolderBase]: 2/112 cut-off events. [2023-11-06 22:08:34,862 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:08:34,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 112 events. 2/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2023-11-06 22:08:34,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 115 transitions, 242 flow [2023-11-06 22:08:34,878 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 112 transitions, 233 flow [2023-11-06 22:08:34,883 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:08:34,910 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 112 transitions, 233 flow [2023-11-06 22:08:34,916 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 112 transitions, 233 flow [2023-11-06 22:08:34,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 112 transitions, 233 flow [2023-11-06 22:08:34,983 INFO L124 PetriNetUnfolderBase]: 2/112 cut-off events. [2023-11-06 22:08:34,983 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:08:34,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 112 events. 2/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2023-11-06 22:08:34,989 INFO L119 LiptonReduction]: Number of co-enabled transitions 2402 [2023-11-06 22:08:42,423 INFO L134 LiptonReduction]: Checked pairs total: 7244 [2023-11-06 22:08:42,424 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-11-06 22:08:42,453 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:08:42,465 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;@64be4290, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:08:42,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-06 22:08:42,479 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:08:42,480 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-06 22:08:42,480 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:08:42,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:42,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:42,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:08:42,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:42,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1489276123, now seen corresponding path program 1 times [2023-11-06 22:08:42,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:42,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922233475] [2023-11-06 22:08:42,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:42,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:43,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:43,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922233475] [2023-11-06 22:08:43,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922233475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:43,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:43,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:08:43,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170688600] [2023-11-06 22:08:43,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:43,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:43,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:43,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:43,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:43,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 214 [2023-11-06 22:08:43,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 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 22:08:43,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:43,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 214 [2023-11-06 22:08:43,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:44,704 INFO L124 PetriNetUnfolderBase]: 2147/3121 cut-off events. [2023-11-06 22:08:44,705 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-06 22:08:44,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6316 conditions, 3121 events. 2147/3121 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 14535 event pairs, 322 based on Foata normal form. 0/2939 useless extension candidates. Maximal degree in co-relation 6305. Up to 2576 conditions per place. [2023-11-06 22:08:44,781 INFO L140 encePairwiseOnDemand]: 211/214 looper letters, 33 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2023-11-06 22:08:44,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 159 flow [2023-11-06 22:08:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2023-11-06 22:08:44,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5077881619937694 [2023-11-06 22:08:44,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 326 transitions. [2023-11-06 22:08:44,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 326 transitions. [2023-11-06 22:08:44,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:44,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 326 transitions. [2023-11-06 22:08:44,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 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 22:08:44,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:44,841 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:44,844 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 61 flow. Second operand 3 states and 326 transitions. [2023-11-06 22:08:44,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 159 flow [2023-11-06 22:08:44,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:08:44,855 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 58 flow [2023-11-06 22:08:44,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-11-06 22:08:44,864 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-06 22:08:44,864 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 58 flow [2023-11-06 22:08:44,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 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 22:08:44,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:44,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:44,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:08:44,867 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:08:44,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:44,881 INFO L85 PathProgramCache]: Analyzing trace with hash -970183659, now seen corresponding path program 1 times [2023-11-06 22:08:44,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:44,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246184877] [2023-11-06 22:08:44,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:44,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:45,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:45,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246184877] [2023-11-06 22:08:45,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246184877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:45,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:45,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:08:45,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643559891] [2023-11-06 22:08:45,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:45,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:45,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:45,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:45,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:45,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 214 [2023-11-06 22:08:45,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:45,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:45,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 214 [2023-11-06 22:08:45,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:46,017 INFO L124 PetriNetUnfolderBase]: 1466/2170 cut-off events. [2023-11-06 22:08:46,018 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2023-11-06 22:08:46,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 2170 events. 1466/2170 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9266 event pairs, 698 based on Foata normal form. 90/2258 useless extension candidates. Maximal degree in co-relation 4493. Up to 1189 conditions per place. [2023-11-06 22:08:46,039 INFO L140 encePairwiseOnDemand]: 211/214 looper letters, 32 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-11-06 22:08:46,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 148 flow [2023-11-06 22:08:46,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:46,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-11-06 22:08:46,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031152647975078 [2023-11-06 22:08:46,044 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-11-06 22:08:46,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-11-06 22:08:46,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:46,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-11-06 22:08:46,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:46,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:46,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:46,059 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 58 flow. Second operand 3 states and 323 transitions. [2023-11-06 22:08:46,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 148 flow [2023-11-06 22:08:46,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:46,065 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 62 flow [2023-11-06 22:08:46,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-11-06 22:08:46,067 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-06 22:08:46,075 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 62 flow [2023-11-06 22:08:46,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:46,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:46,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:46,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:08:46,078 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:08:46,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:46,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1121903899, now seen corresponding path program 1 times [2023-11-06 22:08:46,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:46,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981937909] [2023-11-06 22:08:46,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:46,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:47,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:47,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981937909] [2023-11-06 22:08:47,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981937909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:47,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:47,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:08:47,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893236092] [2023-11-06 22:08:47,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:47,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:08:47,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:47,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:08:47,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:08:48,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 214 [2023-11-06 22:08:48,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 62 flow. Second operand has 7 states, 7 states have (on average 94.71428571428571) internal successors, (663), 7 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:48,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:48,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 214 [2023-11-06 22:08:48,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:48,874 INFO L124 PetriNetUnfolderBase]: 1617/2398 cut-off events. [2023-11-06 22:08:48,875 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-11-06 22:08:48,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5161 conditions, 2398 events. 1617/2398 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10520 event pairs, 990 based on Foata normal form. 18/2416 useless extension candidates. Maximal degree in co-relation 5150. Up to 2164 conditions per place. [2023-11-06 22:08:48,897 INFO L140 encePairwiseOnDemand]: 207/214 looper letters, 42 selfloop transitions, 9 changer transitions 0/52 dead transitions. [2023-11-06 22:08:48,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 52 transitions, 227 flow [2023-11-06 22:08:48,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:08:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:08:48,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 517 transitions. [2023-11-06 22:08:48,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48317757009345796 [2023-11-06 22:08:48,902 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 517 transitions. [2023-11-06 22:08:48,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 517 transitions. [2023-11-06 22:08:48,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:48,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 517 transitions. [2023-11-06 22:08:48,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:48,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 214.0) internal successors, (1284), 6 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:48,911 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 214.0) internal successors, (1284), 6 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:48,911 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 62 flow. Second operand 5 states and 517 transitions. [2023-11-06 22:08:48,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 52 transitions, 227 flow [2023-11-06 22:08:48,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 52 transitions, 221 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:48,921 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 118 flow [2023-11-06 22:08:48,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-11-06 22:08:48,923 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-11-06 22:08:48,928 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 118 flow [2023-11-06 22:08:48,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 94.71428571428571) internal successors, (663), 7 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:48,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:48,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:48,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:08:48,930 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:08:48,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:48,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1907541717, now seen corresponding path program 2 times [2023-11-06 22:08:48,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:48,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763526453] [2023-11-06 22:08:48,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:48,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:50,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:50,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763526453] [2023-11-06 22:08:50,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763526453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:50,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:50,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:08:50,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118911349] [2023-11-06 22:08:50,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:50,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:08:50,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:50,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:08:50,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:08:50,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 214 [2023-11-06 22:08:50,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:50,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:50,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 214 [2023-11-06 22:08:50,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:52,491 INFO L124 PetriNetUnfolderBase]: 3082/4635 cut-off events. [2023-11-06 22:08:52,492 INFO L125 PetriNetUnfolderBase]: For 1908/1908 co-relation queries the response was YES. [2023-11-06 22:08:52,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11405 conditions, 4635 events. 3082/4635 cut-off events. For 1908/1908 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 24197 event pairs, 450 based on Foata normal form. 90/4724 useless extension candidates. Maximal degree in co-relation 11391. Up to 1785 conditions per place. [2023-11-06 22:08:52,540 INFO L140 encePairwiseOnDemand]: 202/214 looper letters, 67 selfloop transitions, 15 changer transitions 5/88 dead transitions. [2023-11-06 22:08:52,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 88 transitions, 460 flow [2023-11-06 22:08:52,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:08:52,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:08:52,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 621 transitions. [2023-11-06 22:08:52,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48364485981308414 [2023-11-06 22:08:52,545 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 621 transitions. [2023-11-06 22:08:52,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 621 transitions. [2023-11-06 22:08:52,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:52,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 621 transitions. [2023-11-06 22:08:52,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:52,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:52,556 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:52,556 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 118 flow. Second operand 6 states and 621 transitions. [2023-11-06 22:08:52,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 88 transitions, 460 flow [2023-11-06 22:08:52,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 88 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:08:52,566 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 239 flow [2023-11-06 22:08:52,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=239, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-11-06 22:08:52,567 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2023-11-06 22:08:52,568 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 239 flow [2023-11-06 22:08:52,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:52,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:52,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:52,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:08:52,570 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:08:52,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:52,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1515187992, now seen corresponding path program 1 times [2023-11-06 22:08:52,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:52,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458438429] [2023-11-06 22:08:52,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:52,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:54,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:54,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458438429] [2023-11-06 22:08:54,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458438429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:54,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:54,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:08:54,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144334356] [2023-11-06 22:08:54,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:54,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:08:54,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:54,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:08:54,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:08:54,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 214 [2023-11-06 22:08:54,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 239 flow. Second operand has 8 states, 8 states have (on average 92.625) internal successors, (741), 8 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:54,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:54,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 214 [2023-11-06 22:08:54,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:56,691 INFO L124 PetriNetUnfolderBase]: 3572/5365 cut-off events. [2023-11-06 22:08:56,691 INFO L125 PetriNetUnfolderBase]: For 5579/5579 co-relation queries the response was YES. [2023-11-06 22:08:56,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16767 conditions, 5365 events. 3572/5365 cut-off events. For 5579/5579 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 28393 event pairs, 441 based on Foata normal form. 6/5371 useless extension candidates. Maximal degree in co-relation 16748. Up to 4224 conditions per place. [2023-11-06 22:08:56,766 INFO L140 encePairwiseOnDemand]: 202/214 looper letters, 74 selfloop transitions, 50 changer transitions 6/131 dead transitions. [2023-11-06 22:08:56,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 131 transitions, 877 flow [2023-11-06 22:08:56,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:08:56,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:08:56,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1019 transitions. [2023-11-06 22:08:56,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4761682242990654 [2023-11-06 22:08:56,775 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1019 transitions. [2023-11-06 22:08:56,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1019 transitions. [2023-11-06 22:08:56,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:56,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1019 transitions. [2023-11-06 22:08:56,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:56,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 214.0) internal successors, (2354), 11 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:56,792 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 214.0) internal successors, (2354), 11 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:56,792 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 239 flow. Second operand 10 states and 1019 transitions. [2023-11-06 22:08:56,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 131 transitions, 877 flow [2023-11-06 22:08:56,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 131 transitions, 843 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:56,828 INFO L231 Difference]: Finished difference. Result has 58 places, 82 transitions, 598 flow [2023-11-06 22:08:56,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=598, PETRI_PLACES=58, PETRI_TRANSITIONS=82} [2023-11-06 22:08:56,831 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2023-11-06 22:08:56,832 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 82 transitions, 598 flow [2023-11-06 22:08:56,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 92.625) internal successors, (741), 8 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:56,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:56,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:56,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:08:56,834 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:08:56,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:56,834 INFO L85 PathProgramCache]: Analyzing trace with hash -406159310, now seen corresponding path program 2 times [2023-11-06 22:08:56,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:56,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373269909] [2023-11-06 22:08:56,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:56,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:58,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:58,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373269909] [2023-11-06 22:08:58,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373269909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:58,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:58,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:08:58,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878670215] [2023-11-06 22:08:58,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:58,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:08:58,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:58,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:08:58,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:08:58,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 214 [2023-11-06 22:08:58,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 82 transitions, 598 flow. Second operand has 6 states, 6 states have (on average 93.16666666666667) internal successors, (559), 6 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:58,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:58,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 214 [2023-11-06 22:08:58,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:00,164 INFO L124 PetriNetUnfolderBase]: 3318/5083 cut-off events. [2023-11-06 22:09:00,165 INFO L125 PetriNetUnfolderBase]: For 13559/13559 co-relation queries the response was YES. [2023-11-06 22:09:00,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19900 conditions, 5083 events. 3318/5083 cut-off events. For 13559/13559 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 27750 event pairs, 443 based on Foata normal form. 28/5111 useless extension candidates. Maximal degree in co-relation 19877. Up to 3563 conditions per place. [2023-11-06 22:09:00,231 INFO L140 encePairwiseOnDemand]: 201/214 looper letters, 85 selfloop transitions, 54 changer transitions 0/140 dead transitions. [2023-11-06 22:09:00,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 140 transitions, 1230 flow [2023-11-06 22:09:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:09:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:09:00,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 809 transitions. [2023-11-06 22:09:00,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725467289719626 [2023-11-06 22:09:00,237 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 809 transitions. [2023-11-06 22:09:00,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 809 transitions. [2023-11-06 22:09:00,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:00,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 809 transitions. [2023-11-06 22:09:00,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 101.125) internal successors, (809), 8 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:00,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 214.0) internal successors, (1926), 9 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:00,247 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 214.0) internal successors, (1926), 9 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:00,248 INFO L175 Difference]: Start difference. First operand has 58 places, 82 transitions, 598 flow. Second operand 8 states and 809 transitions. [2023-11-06 22:09:00,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 140 transitions, 1230 flow [2023-11-06 22:09:00,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 140 transitions, 1158 flow, removed 36 selfloop flow, removed 0 redundant places. [2023-11-06 22:09:00,304 INFO L231 Difference]: Finished difference. Result has 68 places, 105 transitions, 919 flow [2023-11-06 22:09:00,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=919, PETRI_PLACES=68, PETRI_TRANSITIONS=105} [2023-11-06 22:09:00,306 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2023-11-06 22:09:00,306 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 105 transitions, 919 flow [2023-11-06 22:09:00,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.16666666666667) internal successors, (559), 6 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:00,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:00,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:00,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:09:00,307 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:09:00,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:00,308 INFO L85 PathProgramCache]: Analyzing trace with hash -444944960, now seen corresponding path program 3 times [2023-11-06 22:09:00,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:00,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94430963] [2023-11-06 22:09:00,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:00,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:00,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:00,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94430963] [2023-11-06 22:09:00,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94430963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:00,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:00,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:09:00,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199757428] [2023-11-06 22:09:00,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:00,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:09:00,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:00,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:09:00,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:09:00,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 214 [2023-11-06 22:09:00,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 105 transitions, 919 flow. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:00,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:00,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 214 [2023-11-06 22:09:00,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:02,132 INFO L124 PetriNetUnfolderBase]: 2418/3927 cut-off events. [2023-11-06 22:09:02,133 INFO L125 PetriNetUnfolderBase]: For 21904/21904 co-relation queries the response was YES. [2023-11-06 22:09:02,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17457 conditions, 3927 events. 2418/3927 cut-off events. For 21904/21904 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 23035 event pairs, 250 based on Foata normal form. 443/4368 useless extension candidates. Maximal degree in co-relation 17429. Up to 2015 conditions per place. [2023-11-06 22:09:02,182 INFO L140 encePairwiseOnDemand]: 208/214 looper letters, 136 selfloop transitions, 4 changer transitions 114/255 dead transitions. [2023-11-06 22:09:02,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 255 transitions, 2804 flow [2023-11-06 22:09:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:02,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:02,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 512 transitions. [2023-11-06 22:09:02,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785046728971963 [2023-11-06 22:09:02,187 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 512 transitions. [2023-11-06 22:09:02,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 512 transitions. [2023-11-06 22:09:02,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:02,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 512 transitions. [2023-11-06 22:09:02,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.4) internal successors, (512), 5 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:02,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 214.0) internal successors, (1284), 6 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:02,195 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 214.0) internal successors, (1284), 6 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:02,195 INFO L175 Difference]: Start difference. First operand has 68 places, 105 transitions, 919 flow. Second operand 5 states and 512 transitions. [2023-11-06 22:09:02,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 255 transitions, 2804 flow [2023-11-06 22:09:02,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 255 transitions, 2597 flow, removed 15 selfloop flow, removed 5 redundant places. [2023-11-06 22:09:02,246 INFO L231 Difference]: Finished difference. Result has 70 places, 96 transitions, 817 flow [2023-11-06 22:09:02,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=817, PETRI_PLACES=70, PETRI_TRANSITIONS=96} [2023-11-06 22:09:02,248 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2023-11-06 22:09:02,248 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 96 transitions, 817 flow [2023-11-06 22:09:02,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:02,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:02,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:02,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:09:02,249 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:09:02,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:02,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1225102714, now seen corresponding path program 1 times [2023-11-06 22:09:02,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:02,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046332870] [2023-11-06 22:09:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:02,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:02,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:02,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:02,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046332870] [2023-11-06 22:09:02,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046332870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:02,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:02,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:09:02,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560446003] [2023-11-06 22:09:02,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:02,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:02,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:02,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:02,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:02,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 214 [2023-11-06 22:09:02,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 96 transitions, 817 flow. Second operand has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:02,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:02,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 214 [2023-11-06 22:09:02,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:03,409 INFO L124 PetriNetUnfolderBase]: 1133/2000 cut-off events. [2023-11-06 22:09:03,410 INFO L125 PetriNetUnfolderBase]: For 11582/11582 co-relation queries the response was YES. [2023-11-06 22:09:03,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9294 conditions, 2000 events. 1133/2000 cut-off events. For 11582/11582 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11131 event pairs, 146 based on Foata normal form. 213/2211 useless extension candidates. Maximal degree in co-relation 9263. Up to 774 conditions per place. [2023-11-06 22:09:03,436 INFO L140 encePairwiseOnDemand]: 208/214 looper letters, 141 selfloop transitions, 7 changer transitions 65/214 dead transitions. [2023-11-06 22:09:03,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 214 transitions, 2214 flow [2023-11-06 22:09:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:09:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:09:03,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 616 transitions. [2023-11-06 22:09:03,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797507788161994 [2023-11-06 22:09:03,441 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 616 transitions. [2023-11-06 22:09:03,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 616 transitions. [2023-11-06 22:09:03,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:03,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 616 transitions. [2023-11-06 22:09:03,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:03,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:03,449 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:03,449 INFO L175 Difference]: Start difference. First operand has 70 places, 96 transitions, 817 flow. Second operand 6 states and 616 transitions. [2023-11-06 22:09:03,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 214 transitions, 2214 flow [2023-11-06 22:09:03,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 214 transitions, 2148 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-11-06 22:09:03,492 INFO L231 Difference]: Finished difference. Result has 72 places, 87 transitions, 742 flow [2023-11-06 22:09:03,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=742, PETRI_PLACES=72, PETRI_TRANSITIONS=87} [2023-11-06 22:09:03,495 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-11-06 22:09:03,496 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 87 transitions, 742 flow [2023-11-06 22:09:03,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:03,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:03,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:03,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:09:03,499 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:09:03,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:03,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1403026535, now seen corresponding path program 1 times [2023-11-06 22:09:03,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:03,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135149328] [2023-11-06 22:09:03,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:03,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:05,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:05,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:05,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135149328] [2023-11-06 22:09:05,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135149328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:05,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:05,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:09:05,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760059397] [2023-11-06 22:09:05,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:05,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:09:05,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:05,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:09:05,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:09:05,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 214 [2023-11-06 22:09:05,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 87 transitions, 742 flow. Second operand has 8 states, 8 states have (on average 93.25) internal successors, (746), 8 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:05,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:05,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 214 [2023-11-06 22:09:05,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:06,112 INFO L124 PetriNetUnfolderBase]: 871/1606 cut-off events. [2023-11-06 22:09:06,112 INFO L125 PetriNetUnfolderBase]: For 6034/6034 co-relation queries the response was YES. [2023-11-06 22:09:06,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7738 conditions, 1606 events. 871/1606 cut-off events. For 6034/6034 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8712 event pairs, 141 based on Foata normal form. 13/1617 useless extension candidates. Maximal degree in co-relation 7705. Up to 653 conditions per place. [2023-11-06 22:09:06,131 INFO L140 encePairwiseOnDemand]: 203/214 looper letters, 52 selfloop transitions, 23 changer transitions 63/139 dead transitions. [2023-11-06 22:09:06,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 139 transitions, 1448 flow [2023-11-06 22:09:06,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:09:06,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:09:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 709 transitions. [2023-11-06 22:09:06,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732977303070761 [2023-11-06 22:09:06,137 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 709 transitions. [2023-11-06 22:09:06,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 709 transitions. [2023-11-06 22:09:06,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:06,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 709 transitions. [2023-11-06 22:09:06,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.28571428571429) internal successors, (709), 7 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:06,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:06,147 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:06,147 INFO L175 Difference]: Start difference. First operand has 72 places, 87 transitions, 742 flow. Second operand 7 states and 709 transitions. [2023-11-06 22:09:06,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 139 transitions, 1448 flow [2023-11-06 22:09:06,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 139 transitions, 1338 flow, removed 42 selfloop flow, removed 4 redundant places. [2023-11-06 22:09:06,182 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 525 flow [2023-11-06 22:09:06,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=525, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2023-11-06 22:09:06,184 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 38 predicate places. [2023-11-06 22:09:06,184 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 525 flow [2023-11-06 22:09:06,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 93.25) internal successors, (746), 8 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:06,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:06,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:06,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:09:06,186 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:09:06,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:06,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1751345539, now seen corresponding path program 2 times [2023-11-06 22:09:06,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:06,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868823352] [2023-11-06 22:09:06,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:06,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:06,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:06,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868823352] [2023-11-06 22:09:06,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868823352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:06,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:06,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:09:06,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302022128] [2023-11-06 22:09:06,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:06,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:09:06,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:06,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:09:06,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:09:06,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 214 [2023-11-06 22:09:06,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 525 flow. Second operand has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:06,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:06,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 214 [2023-11-06 22:09:06,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:07,023 INFO L124 PetriNetUnfolderBase]: 298/580 cut-off events. [2023-11-06 22:09:07,024 INFO L125 PetriNetUnfolderBase]: For 2707/2707 co-relation queries the response was YES. [2023-11-06 22:09:07,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2952 conditions, 580 events. 298/580 cut-off events. For 2707/2707 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2567 event pairs, 41 based on Foata normal form. 24/602 useless extension candidates. Maximal degree in co-relation 2919. Up to 269 conditions per place. [2023-11-06 22:09:07,032 INFO L140 encePairwiseOnDemand]: 208/214 looper letters, 80 selfloop transitions, 10 changer transitions 15/106 dead transitions. [2023-11-06 22:09:07,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 106 transitions, 1250 flow [2023-11-06 22:09:07,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:09:07,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:09:07,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 680 transitions. [2023-11-06 22:09:07,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4539385847797063 [2023-11-06 22:09:07,037 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 680 transitions. [2023-11-06 22:09:07,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 680 transitions. [2023-11-06 22:09:07,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:07,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 680 transitions. [2023-11-06 22:09:07,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:07,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:07,046 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:07,046 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 525 flow. Second operand 7 states and 680 transitions. [2023-11-06 22:09:07,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 106 transitions, 1250 flow [2023-11-06 22:09:07,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 106 transitions, 1006 flow, removed 28 selfloop flow, removed 15 redundant places. [2023-11-06 22:09:07,060 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 427 flow [2023-11-06 22:09:07,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2023-11-06 22:09:07,062 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2023-11-06 22:09:07,062 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 427 flow [2023-11-06 22:09:07,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:07,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:07,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:07,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:09:07,063 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:09:07,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:07,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1887906816, now seen corresponding path program 1 times [2023-11-06 22:09:07,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:07,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298143288] [2023-11-06 22:09:07,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:07,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:07,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:07,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298143288] [2023-11-06 22:09:07,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298143288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:07,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:07,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:09:07,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139639706] [2023-11-06 22:09:07,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:07,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:09:07,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:07,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:09:07,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:09:07,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 214 [2023-11-06 22:09:07,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:07,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:07,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 214 [2023-11-06 22:09:07,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:07,784 INFO L124 PetriNetUnfolderBase]: 373/691 cut-off events. [2023-11-06 22:09:07,785 INFO L125 PetriNetUnfolderBase]: For 2090/2090 co-relation queries the response was YES. [2023-11-06 22:09:07,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3179 conditions, 691 events. 373/691 cut-off events. For 2090/2090 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3078 event pairs, 61 based on Foata normal form. 2/693 useless extension candidates. Maximal degree in co-relation 3152. Up to 453 conditions per place. [2023-11-06 22:09:07,791 INFO L140 encePairwiseOnDemand]: 211/214 looper letters, 37 selfloop transitions, 1 changer transitions 49/87 dead transitions. [2023-11-06 22:09:07,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 87 transitions, 851 flow [2023-11-06 22:09:07,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:09:07,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:09:07,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 419 transitions. [2023-11-06 22:09:07,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894859813084112 [2023-11-06 22:09:07,795 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 419 transitions. [2023-11-06 22:09:07,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 419 transitions. [2023-11-06 22:09:07,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:07,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 419 transitions. [2023-11-06 22:09:07,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:07,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:07,801 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:07,801 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 427 flow. Second operand 4 states and 419 transitions. [2023-11-06 22:09:07,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 87 transitions, 851 flow [2023-11-06 22:09:07,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 87 transitions, 767 flow, removed 26 selfloop flow, removed 6 redundant places. [2023-11-06 22:09:07,812 INFO L231 Difference]: Finished difference. Result has 61 places, 32 transitions, 197 flow [2023-11-06 22:09:07,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=61, PETRI_TRANSITIONS=32} [2023-11-06 22:09:07,814 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2023-11-06 22:09:07,814 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 32 transitions, 197 flow [2023-11-06 22:09:07,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:07,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:07,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:07,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:09:07,816 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:09:07,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:07,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1271891320, now seen corresponding path program 2 times [2023-11-06 22:09:07,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:07,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744712351] [2023-11-06 22:09:07,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:07,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:11,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:11,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744712351] [2023-11-06 22:09:11,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744712351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:11,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:11,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:09:11,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680852340] [2023-11-06 22:09:11,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:11,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:09:11,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:11,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:09:11,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:09:11,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 214 [2023-11-06 22:09:11,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 32 transitions, 197 flow. Second operand has 13 states, 13 states have (on average 89.76923076923077) internal successors, (1167), 13 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:11,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:11,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 214 [2023-11-06 22:09:11,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:12,598 INFO L124 PetriNetUnfolderBase]: 145/290 cut-off events. [2023-11-06 22:09:12,598 INFO L125 PetriNetUnfolderBase]: For 711/715 co-relation queries the response was YES. [2023-11-06 22:09:12,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 290 events. 145/290 cut-off events. For 711/715 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1083 event pairs, 22 based on Foata normal form. 1/288 useless extension candidates. Maximal degree in co-relation 1269. Up to 138 conditions per place. [2023-11-06 22:09:12,601 INFO L140 encePairwiseOnDemand]: 206/214 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2023-11-06 22:09:12,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 67 transitions, 562 flow [2023-11-06 22:09:12,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:09:12,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:09:12,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 843 transitions. [2023-11-06 22:09:12,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43769470404984423 [2023-11-06 22:09:12,609 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 843 transitions. [2023-11-06 22:09:12,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 843 transitions. [2023-11-06 22:09:12,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:12,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 843 transitions. [2023-11-06 22:09:12,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.66666666666667) internal successors, (843), 9 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:12,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 214.0) internal successors, (2140), 10 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:12,620 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 214.0) internal successors, (2140), 10 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:12,620 INFO L175 Difference]: Start difference. First operand has 61 places, 32 transitions, 197 flow. Second operand 9 states and 843 transitions. [2023-11-06 22:09:12,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 67 transitions, 562 flow [2023-11-06 22:09:12,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 67 transitions, 521 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-06 22:09:12,625 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-11-06 22:09:12,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-11-06 22:09:12,626 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2023-11-06 22:09:12,627 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-11-06 22:09:12,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 89.76923076923077) internal successors, (1167), 13 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:12,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-06 22:09:12,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-06 22:09:12,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-06 22:09:12,633 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-11-06 22:09:12,633 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-11-06 22:09:12,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-06 22:09:12,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:09:12,635 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1] [2023-11-06 22:09:12,643 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:09:12,643 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:09:12,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:09:12 BasicIcfg [2023-11-06 22:09:12,650 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:09:12,651 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:09:12,651 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:09:12,651 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:09:12,652 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:34" (3/4) ... [2023-11-06 22:09:12,655 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:09:12,659 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-06 22:09:12,659 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-06 22:09:12,659 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-06 22:09:12,672 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2023-11-06 22:09:12,673 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-06 22:09:12,674 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:09:12,674 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:09:12,765 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071954a2-ee94-49cc-acda-fa5908a3911c/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:09:12,766 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071954a2-ee94-49cc-acda-fa5908a3911c/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:09:12,766 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:09:12,767 INFO L158 Benchmark]: Toolchain (without parser) took 40737.44ms. Allocated memory was 136.3MB in the beginning and 734.0MB in the end (delta: 597.7MB). Free memory was 89.8MB in the beginning and 606.1MB in the end (delta: -516.3MB). Peak memory consumption was 83.0MB. Max. memory is 16.1GB. [2023-11-06 22:09:12,767 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 136.3MB. Free memory is still 107.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:09:12,768 INFO L158 Benchmark]: CACSL2BoogieTranslator took 864.56ms. Allocated memory is still 136.3MB. Free memory was 89.8MB in the beginning and 62.6MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-06 22:09:12,768 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.61ms. Allocated memory is still 136.3MB. Free memory was 62.0MB in the beginning and 58.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:09:12,769 INFO L158 Benchmark]: Boogie Preprocessor took 94.31ms. Allocated memory is still 136.3MB. Free memory was 58.9MB in the beginning and 56.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:09:12,770 INFO L158 Benchmark]: RCFGBuilder took 1443.96ms. Allocated memory was 136.3MB in the beginning and 180.4MB in the end (delta: 44.0MB). Free memory was 56.2MB in the beginning and 91.8MB in the end (delta: -35.5MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2023-11-06 22:09:12,770 INFO L158 Benchmark]: TraceAbstraction took 38123.03ms. Allocated memory was 180.4MB in the beginning and 734.0MB in the end (delta: 553.6MB). Free memory was 91.8MB in the beginning and 609.3MB in the end (delta: -517.5MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2023-11-06 22:09:12,771 INFO L158 Benchmark]: Witness Printer took 115.40ms. Allocated memory is still 734.0MB. Free memory was 609.3MB in the beginning and 606.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:09:12,775 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 136.3MB. Free memory is still 107.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 864.56ms. Allocated memory is still 136.3MB. Free memory was 89.8MB in the beginning and 62.6MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.61ms. Allocated memory is still 136.3MB. Free memory was 62.0MB in the beginning and 58.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 94.31ms. Allocated memory is still 136.3MB. Free memory was 58.9MB in the beginning and 56.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1443.96ms. Allocated memory was 136.3MB in the beginning and 180.4MB in the end (delta: 44.0MB). Free memory was 56.2MB in the beginning and 91.8MB in the end (delta: -35.5MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * TraceAbstraction took 38123.03ms. Allocated memory was 180.4MB in the beginning and 734.0MB in the end (delta: 553.6MB). Free memory was 91.8MB in the beginning and 609.3MB in the end (delta: -517.5MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. * Witness Printer took 115.40ms. Allocated memory is still 734.0MB. Free memory was 609.3MB in the beginning and 606.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.5s, 120 PlacesBefore, 36 PlacesAfterwards, 112 TransitionsBefore, 26 TransitionsAfterwards, 2402 CoEnabledTransitionPairs, 7 FixpointIterations, 38 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 99 TotalNumberOfCompositions, 7244 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2908, independent: 2679, independent conditional: 0, independent unconditional: 2679, dependent: 229, dependent conditional: 0, dependent unconditional: 229, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1263, independent: 1215, independent conditional: 0, independent unconditional: 1215, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2908, independent: 1464, independent conditional: 0, independent unconditional: 1464, dependent: 181, dependent conditional: 0, dependent unconditional: 181, unknown: 1263, unknown conditional: 0, unknown unconditional: 1263] , Statistics on independence cache: Total cache size (in pairs): 81, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 145 locations, 6 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: 37.9s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 14.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 589 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 495 mSDsluCounter, 357 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 290 mSDsCounter, 298 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2097 IncrementalHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 298 mSolverCounterUnsat, 67 mSDtfsCounter, 2097 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=919occurred in iteration=6, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 1592 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:09:12,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071954a2-ee94-49cc-acda-fa5908a3911c/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 Result: TRUE