./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi002_tso.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_53a79136-3e11-4de1-bb53-af7eed9f8ce7/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a79136-3e11-4de1-bb53-af7eed9f8ce7/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_53a79136-3e11-4de1-bb53-af7eed9f8ce7/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a79136-3e11-4de1-bb53-af7eed9f8ce7/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi002_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a79136-3e11-4de1-bb53-af7eed9f8ce7/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_53a79136-3e11-4de1-bb53-af7eed9f8ce7/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 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:53:18,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:53:18,522 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a79136-3e11-4de1-bb53-af7eed9f8ce7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:53:18,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:53:18,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:53:18,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:53:18,555 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:53:18,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:53:18,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:53:18,557 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:53:18,558 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:53:18,558 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:53:18,559 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:53:18,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:53:18,560 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:53:18,560 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:53:18,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:53:18,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:53:18,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:53:18,562 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:53:18,562 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:53:18,563 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:53:18,563 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:53:18,564 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:53:18,564 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:53:18,565 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:53:18,565 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:53:18,565 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:53:18,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:53:18,566 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:53:18,566 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:53:18,567 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:53:18,567 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:53:18,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:53:18,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:53:18,568 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:53:18,568 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:53:18,568 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:53:18,568 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:53:18,569 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_53a79136-3e11-4de1-bb53-af7eed9f8ce7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a79136-3e11-4de1-bb53-af7eed9f8ce7/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a [2023-11-06 22:53:18,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:53:18,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:53:18,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:53:18,822 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:53:18,823 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:53:18,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a79136-3e11-4de1-bb53-af7eed9f8ce7/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/rfi002_tso.i [2023-11-06 22:53:21,977 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:53:22,312 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:53:22,313 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a79136-3e11-4de1-bb53-af7eed9f8ce7/sv-benchmarks/c/pthread-wmm/rfi002_tso.i [2023-11-06 22:53:22,340 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a79136-3e11-4de1-bb53-af7eed9f8ce7/bin/uautomizer-verify-WvqO1wxjHP/data/8ea5036d4/2b73f6c64ea64e1cb69269a89e5d96d2/FLAG95cf06a03 [2023-11-06 22:53:22,359 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a79136-3e11-4de1-bb53-af7eed9f8ce7/bin/uautomizer-verify-WvqO1wxjHP/data/8ea5036d4/2b73f6c64ea64e1cb69269a89e5d96d2 [2023-11-06 22:53:22,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:53:22,369 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:53:22,370 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:53:22,370 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:53:22,376 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:53:22,378 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,380 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cd22b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22, skipping insertion in model container [2023-11-06 22:53:22,380 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,474 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:53:22,693 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_53a79136-3e11-4de1-bb53-af7eed9f8ce7/sv-benchmarks/c/pthread-wmm/rfi002_tso.i[987,1000] [2023-11-06 22:53:22,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:53:23,010 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:53:23,022 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_53a79136-3e11-4de1-bb53-af7eed9f8ce7/sv-benchmarks/c/pthread-wmm/rfi002_tso.i[987,1000] [2023-11-06 22:53:23,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:53:23,124 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:53:23,125 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:53:23,132 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:53:23,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:23 WrapperNode [2023-11-06 22:53:23,133 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:53:23,134 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:53:23,134 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:53:23,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:53:23,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:23" (1/1) ... [2023-11-06 22:53:23,162 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:23" (1/1) ... [2023-11-06 22:53:23,214 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 208 [2023-11-06 22:53:23,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:53:23,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:53:23,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:53:23,216 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:53:23,226 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:23" (1/1) ... [2023-11-06 22:53:23,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:23" (1/1) ... [2023-11-06 22:53:23,235 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:23" (1/1) ... [2023-11-06 22:53:23,236 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:23" (1/1) ... [2023-11-06 22:53:23,250 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:23" (1/1) ... [2023-11-06 22:53:23,253 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:23" (1/1) ... [2023-11-06 22:53:23,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:23" (1/1) ... [2023-11-06 22:53:23,260 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:23" (1/1) ... [2023-11-06 22:53:23,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:53:23,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:53:23,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:53:23,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:53:23,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:23" (1/1) ... [2023-11-06 22:53:23,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:53:23,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a79136-3e11-4de1-bb53-af7eed9f8ce7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:23,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a79136-3e11-4de1-bb53-af7eed9f8ce7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:53:23,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a79136-3e11-4de1-bb53-af7eed9f8ce7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:53:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:53:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:53:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:53:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:53:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:53:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 22:53:23,380 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 22:53:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 22:53:23,380 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 22:53:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:53:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:53:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:53:23,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:53:23,383 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 22:53:23,539 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:53:23,541 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:53:24,091 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:53:24,375 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:53:24,376 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:53:24,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:53:24 BoogieIcfgContainer [2023-11-06 22:53:24,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:53:24,384 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:53:24,385 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:53:24,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:53:24,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:53:22" (1/3) ... [2023-11-06 22:53:24,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0731b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:53:24, skipping insertion in model container [2023-11-06 22:53:24,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:23" (2/3) ... [2023-11-06 22:53:24,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0731b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:53:24, skipping insertion in model container [2023-11-06 22:53:24,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:53:24" (3/3) ... [2023-11-06 22:53:24,395 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2023-11-06 22:53:24,404 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:53:24,416 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:53:24,417 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-06 22:53:24,417 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:53:24,491 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:53:24,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 110 transitions, 228 flow [2023-11-06 22:53:24,638 INFO L124 PetriNetUnfolderBase]: 2/108 cut-off events. [2023-11-06 22:53:24,640 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:53:24,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 108 events. 2/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-11-06 22:53:24,647 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 110 transitions, 228 flow [2023-11-06 22:53:24,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 108 transitions, 222 flow [2023-11-06 22:53:24,657 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:53:24,673 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 108 transitions, 222 flow [2023-11-06 22:53:24,676 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 108 transitions, 222 flow [2023-11-06 22:53:24,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 108 transitions, 222 flow [2023-11-06 22:53:24,717 INFO L124 PetriNetUnfolderBase]: 2/108 cut-off events. [2023-11-06 22:53:24,717 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:53:24,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 108 events. 2/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-11-06 22:53:24,720 INFO L119 LiptonReduction]: Number of co-enabled transitions 1466 [2023-11-06 22:53:31,580 INFO L134 LiptonReduction]: Checked pairs total: 4555 [2023-11-06 22:53:31,581 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-11-06 22:53:31,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:53:31,613 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;@7ac8ab3b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:53:31,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-06 22:53:31,618 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:53:31,619 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-06 22:53:31,619 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:53:31,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:31,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:53:31,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:53:31,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:31,626 INFO L85 PathProgramCache]: Analyzing trace with hash 614425238, now seen corresponding path program 1 times [2023-11-06 22:53:31,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:31,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757398218] [2023-11-06 22:53:31,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:31,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:32,104 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 22:53:32,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:32,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757398218] [2023-11-06 22:53:32,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757398218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:32,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:32,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:53:32,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557460303] [2023-11-06 22:53:32,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:32,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:53:32,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:32,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:53:32,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:53:32,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 208 [2023-11-06 22:53:32,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 22:53:32,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:32,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 208 [2023-11-06 22:53:32,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:32,524 INFO L124 PetriNetUnfolderBase]: 373/626 cut-off events. [2023-11-06 22:53:32,524 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:53:32,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 626 events. 373/626 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2497 event pairs, 30 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 1260. Up to 554 conditions per place. [2023-11-06 22:53:32,533 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 27 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-11-06 22:53:32,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 122 flow [2023-11-06 22:53:32,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:53:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:53:32,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2023-11-06 22:53:32,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49038461538461536 [2023-11-06 22:53:32,550 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2023-11-06 22:53:32,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2023-11-06 22:53:32,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:32,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2023-11-06 22:53:32,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:32,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:32,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:32,568 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 306 transitions. [2023-11-06 22:53:32,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 122 flow [2023-11-06 22:53:32,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:53:32,572 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 48 flow [2023-11-06 22:53:32,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-11-06 22:53:32,578 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-11-06 22:53:32,578 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 48 flow [2023-11-06 22:53:32,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 22:53:32,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:32,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:53:32,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:53:32,580 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:53:32,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:32,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1867313733, now seen corresponding path program 1 times [2023-11-06 22:53:32,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:32,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266071865] [2023-11-06 22:53:32,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:32,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:32,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:32,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266071865] [2023-11-06 22:53:32,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266071865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:32,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:32,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:53:32,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152675333] [2023-11-06 22:53:32,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:32,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:53:32,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:32,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:53:32,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:53:32,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 208 [2023-11-06 22:53:32,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 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 22:53:32,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:32,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 208 [2023-11-06 22:53:32,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:32,960 INFO L124 PetriNetUnfolderBase]: 324/547 cut-off events. [2023-11-06 22:53:32,961 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-06 22:53:32,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 547 events. 324/547 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2059 event pairs, 79 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 1132. Up to 396 conditions per place. [2023-11-06 22:53:32,966 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 24 selfloop transitions, 2 changer transitions 2/28 dead transitions. [2023-11-06 22:53:32,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 120 flow [2023-11-06 22:53:32,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:53:32,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:53:32,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-11-06 22:53:32,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48878205128205127 [2023-11-06 22:53:32,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-11-06 22:53:32,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-11-06 22:53:32,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:32,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-11-06 22:53:32,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 22:53:32,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:32,976 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:32,977 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 48 flow. Second operand 3 states and 305 transitions. [2023-11-06 22:53:32,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 120 flow [2023-11-06 22:53:32,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:53:32,979 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 44 flow [2023-11-06 22:53:32,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-11-06 22:53:32,980 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2023-11-06 22:53:32,980 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 44 flow [2023-11-06 22:53:32,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 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 22:53:32,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:32,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:32,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:53:32,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:53:32,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:32,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2052218749, now seen corresponding path program 1 times [2023-11-06 22:53:32,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:32,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287037400] [2023-11-06 22:53:32,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:32,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:33,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:33,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:33,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287037400] [2023-11-06 22:53:33,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287037400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:33,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:33,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:53:33,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816232139] [2023-11-06 22:53:33,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:33,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:53:33,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:33,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:53:33,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:53:33,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 208 [2023-11-06 22:53:33,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 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 22:53:33,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:33,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 208 [2023-11-06 22:53:33,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:33,971 INFO L124 PetriNetUnfolderBase]: 220/383 cut-off events. [2023-11-06 22:53:33,972 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-06 22:53:33,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 383 events. 220/383 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1278 event pairs, 92 based on Foata normal form. 18/401 useless extension candidates. Maximal degree in co-relation 792. Up to 243 conditions per place. [2023-11-06 22:53:33,975 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-06 22:53:33,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 108 flow [2023-11-06 22:53:33,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:53:33,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:53:33,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2023-11-06 22:53:33,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2023-11-06 22:53:33,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2023-11-06 22:53:33,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2023-11-06 22:53:33,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:33,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2023-11-06 22:53:33,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 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 22:53:33,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:33,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:33,985 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 44 flow. Second operand 3 states and 284 transitions. [2023-11-06 22:53:33,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 108 flow [2023-11-06 22:53:33,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:53:33,987 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 48 flow [2023-11-06 22:53:33,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-11-06 22:53:33,989 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2023-11-06 22:53:33,993 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 48 flow [2023-11-06 22:53:33,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 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 22:53:33,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:33,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:33,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:53:33,995 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:53:33,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:33,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1278631465, now seen corresponding path program 1 times [2023-11-06 22:53:33,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:33,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085187686] [2023-11-06 22:53:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:33,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:34,993 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 22:53:34,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:34,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085187686] [2023-11-06 22:53:34,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085187686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:34,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:34,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:53:34,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743094924] [2023-11-06 22:53:34,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:34,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:53:34,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:35,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:53:35,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:53:35,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 208 [2023-11-06 22:53:35,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 48 flow. Second operand has 6 states, 6 states have (on average 89.66666666666667) internal successors, (538), 6 states have internal predecessors, (538), 0 states have call successors, (0), 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 22:53:35,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:35,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 208 [2023-11-06 22:53:35,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:35,352 INFO L124 PetriNetUnfolderBase]: 217/379 cut-off events. [2023-11-06 22:53:35,352 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 22:53:35,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 379 events. 217/379 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1280 event pairs, 80 based on Foata normal form. 5/384 useless extension candidates. Maximal degree in co-relation 822. Up to 311 conditions per place. [2023-11-06 22:53:35,356 INFO L140 encePairwiseOnDemand]: 201/208 looper letters, 32 selfloop transitions, 11 changer transitions 0/43 dead transitions. [2023-11-06 22:53:35,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 43 transitions, 191 flow [2023-11-06 22:53:35,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:53:35,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:53:35,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 574 transitions. [2023-11-06 22:53:35,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599358974358974 [2023-11-06 22:53:35,360 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 574 transitions. [2023-11-06 22:53:35,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 574 transitions. [2023-11-06 22:53:35,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:35,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 574 transitions. [2023-11-06 22:53:35,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 0 states have call successors, (0), 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 22:53:35,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 0 states have call successors, (0), 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 22:53:35,368 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 0 states have call successors, (0), 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 22:53:35,368 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 48 flow. Second operand 6 states and 574 transitions. [2023-11-06 22:53:35,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 43 transitions, 191 flow [2023-11-06 22:53:35,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 43 transitions, 185 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:53:35,371 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 120 flow [2023-11-06 22:53:35,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2023-11-06 22:53:35,372 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2023-11-06 22:53:35,372 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 120 flow [2023-11-06 22:53:35,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.66666666666667) internal successors, (538), 6 states have internal predecessors, (538), 0 states have call successors, (0), 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 22:53:35,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:35,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:35,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:53:35,374 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:53:35,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:35,374 INFO L85 PathProgramCache]: Analyzing trace with hash -336027090, now seen corresponding path program 1 times [2023-11-06 22:53:35,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:35,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129283870] [2023-11-06 22:53:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:35,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:36,222 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 22:53:36,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:36,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129283870] [2023-11-06 22:53:36,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129283870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:36,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:36,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:53:36,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227021624] [2023-11-06 22:53:36,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:36,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:53:36,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:36,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:53:36,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:53:36,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 208 [2023-11-06 22:53:36,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 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 22:53:36,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:36,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 208 [2023-11-06 22:53:36,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:36,597 INFO L124 PetriNetUnfolderBase]: 228/399 cut-off events. [2023-11-06 22:53:36,597 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2023-11-06 22:53:36,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1122 conditions, 399 events. 228/399 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1380 event pairs, 65 based on Foata normal form. 1/400 useless extension candidates. Maximal degree in co-relation 1107. Up to 318 conditions per place. [2023-11-06 22:53:36,602 INFO L140 encePairwiseOnDemand]: 200/208 looper letters, 40 selfloop transitions, 12 changer transitions 0/52 dead transitions. [2023-11-06 22:53:36,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 52 transitions, 308 flow [2023-11-06 22:53:36,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:53:36,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:53:36,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 451 transitions. [2023-11-06 22:53:36,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43365384615384617 [2023-11-06 22:53:36,605 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 451 transitions. [2023-11-06 22:53:36,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 451 transitions. [2023-11-06 22:53:36,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:36,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 451 transitions. [2023-11-06 22:53:36,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.2) internal successors, (451), 5 states have internal predecessors, (451), 0 states have call successors, (0), 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 22:53:36,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 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 22:53:36,612 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 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 22:53:36,612 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 120 flow. Second operand 5 states and 451 transitions. [2023-11-06 22:53:36,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 52 transitions, 308 flow [2023-11-06 22:53:36,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 52 transitions, 308 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:53:36,617 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 210 flow [2023-11-06 22:53:36,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2023-11-06 22:53:36,618 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 12 predicate places. [2023-11-06 22:53:36,618 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 210 flow [2023-11-06 22:53:36,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 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 22:53:36,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:36,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:36,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:53:36,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:53:36,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:36,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1673650030, now seen corresponding path program 2 times [2023-11-06 22:53:36,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:36,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989317561] [2023-11-06 22:53:36,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:36,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:37,622 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 22:53:37,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:37,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989317561] [2023-11-06 22:53:37,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989317561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:37,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:37,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:53:37,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613859345] [2023-11-06 22:53:37,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:37,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:53:37,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:37,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:53:37,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:53:37,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 208 [2023-11-06 22:53:37,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 0 states have call successors, (0), 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 22:53:37,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:37,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 208 [2023-11-06 22:53:37,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:38,184 INFO L124 PetriNetUnfolderBase]: 335/579 cut-off events. [2023-11-06 22:53:38,184 INFO L125 PetriNetUnfolderBase]: For 697/697 co-relation queries the response was YES. [2023-11-06 22:53:38,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2007 conditions, 579 events. 335/579 cut-off events. For 697/697 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2328 event pairs, 17 based on Foata normal form. 9/588 useless extension candidates. Maximal degree in co-relation 1987. Up to 369 conditions per place. [2023-11-06 22:53:38,191 INFO L140 encePairwiseOnDemand]: 198/208 looper letters, 61 selfloop transitions, 27 changer transitions 0/88 dead transitions. [2023-11-06 22:53:38,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 88 transitions, 628 flow [2023-11-06 22:53:38,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:53:38,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:53:38,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 580 transitions. [2023-11-06 22:53:38,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46474358974358976 [2023-11-06 22:53:38,195 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 580 transitions. [2023-11-06 22:53:38,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 580 transitions. [2023-11-06 22:53:38,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:38,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 580 transitions. [2023-11-06 22:53:38,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 0 states have call successors, (0), 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 22:53:38,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 0 states have call successors, (0), 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 22:53:38,202 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 0 states have call successors, (0), 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 22:53:38,203 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 210 flow. Second operand 6 states and 580 transitions. [2023-11-06 22:53:38,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 88 transitions, 628 flow [2023-11-06 22:53:38,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 88 transitions, 628 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:53:38,209 INFO L231 Difference]: Finished difference. Result has 47 places, 61 transitions, 462 flow [2023-11-06 22:53:38,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=462, PETRI_PLACES=47, PETRI_TRANSITIONS=61} [2023-11-06 22:53:38,210 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 19 predicate places. [2023-11-06 22:53:38,211 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 61 transitions, 462 flow [2023-11-06 22:53:38,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 0 states have call successors, (0), 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 22:53:38,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:38,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:38,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:53:38,212 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:53:38,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:38,213 INFO L85 PathProgramCache]: Analyzing trace with hash -310704120, now seen corresponding path program 3 times [2023-11-06 22:53:38,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:38,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616439996] [2023-11-06 22:53:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:38,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:39,074 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 22:53:39,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:39,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616439996] [2023-11-06 22:53:39,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616439996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:39,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:39,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:53:39,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004759709] [2023-11-06 22:53:39,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:39,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:53:39,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:39,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:53:39,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:53:39,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 208 [2023-11-06 22:53:39,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 61 transitions, 462 flow. Second operand has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 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 22:53:39,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:39,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 208 [2023-11-06 22:53:39,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:39,507 INFO L124 PetriNetUnfolderBase]: 328/568 cut-off events. [2023-11-06 22:53:39,508 INFO L125 PetriNetUnfolderBase]: For 1080/1080 co-relation queries the response was YES. [2023-11-06 22:53:39,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2385 conditions, 568 events. 328/568 cut-off events. For 1080/1080 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2253 event pairs, 29 based on Foata normal form. 4/572 useless extension candidates. Maximal degree in co-relation 2361. Up to 273 conditions per place. [2023-11-06 22:53:39,514 INFO L140 encePairwiseOnDemand]: 203/208 looper letters, 64 selfloop transitions, 14 changer transitions 0/78 dead transitions. [2023-11-06 22:53:39,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 78 transitions, 693 flow [2023-11-06 22:53:39,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:53:39,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:53:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 478 transitions. [2023-11-06 22:53:39,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596153846153846 [2023-11-06 22:53:39,518 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 478 transitions. [2023-11-06 22:53:39,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 478 transitions. [2023-11-06 22:53:39,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:39,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 478 transitions. [2023-11-06 22:53:39,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 0 states have call successors, (0), 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 22:53:39,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 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 22:53:39,524 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 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 22:53:39,524 INFO L175 Difference]: Start difference. First operand has 47 places, 61 transitions, 462 flow. Second operand 5 states and 478 transitions. [2023-11-06 22:53:39,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 78 transitions, 693 flow [2023-11-06 22:53:39,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 78 transitions, 690 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:53:39,535 INFO L231 Difference]: Finished difference. Result has 51 places, 61 transitions, 501 flow [2023-11-06 22:53:39,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=501, PETRI_PLACES=51, PETRI_TRANSITIONS=61} [2023-11-06 22:53:39,538 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 23 predicate places. [2023-11-06 22:53:39,538 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 61 transitions, 501 flow [2023-11-06 22:53:39,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 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 22:53:39,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:39,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:39,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:53:39,540 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:53:39,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:39,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1272058326, now seen corresponding path program 1 times [2023-11-06 22:53:39,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:39,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236377196] [2023-11-06 22:53:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:39,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:39,803 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 22:53:39,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:39,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236377196] [2023-11-06 22:53:39,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236377196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:39,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:39,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:53:39,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298312001] [2023-11-06 22:53:39,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:39,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:53:39,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:39,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:53:39,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:53:39,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 208 [2023-11-06 22:53:39,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 61 transitions, 501 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 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 22:53:39,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:39,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 208 [2023-11-06 22:53:39,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:40,027 INFO L124 PetriNetUnfolderBase]: 317/550 cut-off events. [2023-11-06 22:53:40,028 INFO L125 PetriNetUnfolderBase]: For 1402/1402 co-relation queries the response was YES. [2023-11-06 22:53:40,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2406 conditions, 550 events. 317/550 cut-off events. For 1402/1402 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2157 event pairs, 112 based on Foata normal form. 7/557 useless extension candidates. Maximal degree in co-relation 2380. Up to 320 conditions per place. [2023-11-06 22:53:40,035 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 62 selfloop transitions, 10 changer transitions 0/72 dead transitions. [2023-11-06 22:53:40,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 715 flow [2023-11-06 22:53:40,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:53:40,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:53:40,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-11-06 22:53:40,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48878205128205127 [2023-11-06 22:53:40,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-11-06 22:53:40,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-11-06 22:53:40,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:40,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-11-06 22:53:40,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 22:53:40,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:40,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:40,042 INFO L175 Difference]: Start difference. First operand has 51 places, 61 transitions, 501 flow. Second operand 3 states and 305 transitions. [2023-11-06 22:53:40,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 715 flow [2023-11-06 22:53:40,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 679 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-06 22:53:40,050 INFO L231 Difference]: Finished difference. Result has 50 places, 61 transitions, 503 flow [2023-11-06 22:53:40,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=503, PETRI_PLACES=50, PETRI_TRANSITIONS=61} [2023-11-06 22:53:40,052 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 22 predicate places. [2023-11-06 22:53:40,052 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 61 transitions, 503 flow [2023-11-06 22:53:40,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 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 22:53:40,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:40,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:40,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:53:40,053 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:53:40,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:40,054 INFO L85 PathProgramCache]: Analyzing trace with hash -472677269, now seen corresponding path program 1 times [2023-11-06 22:53:40,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:40,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599991276] [2023-11-06 22:53:40,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:40,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:40,829 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 22:53:40,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:40,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599991276] [2023-11-06 22:53:40,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599991276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:40,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:40,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:53:40,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65970308] [2023-11-06 22:53:40,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:40,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:53:40,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:40,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:53:40,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:53:40,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 208 [2023-11-06 22:53:40,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 61 transitions, 503 flow. Second operand has 6 states, 6 states have (on average 83.33333333333333) internal successors, (500), 6 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:40,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:40,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 208 [2023-11-06 22:53:40,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:41,464 INFO L124 PetriNetUnfolderBase]: 383/685 cut-off events. [2023-11-06 22:53:41,464 INFO L125 PetriNetUnfolderBase]: For 1709/1709 co-relation queries the response was YES. [2023-11-06 22:53:41,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2984 conditions, 685 events. 383/685 cut-off events. For 1709/1709 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3054 event pairs, 23 based on Foata normal form. 9/694 useless extension candidates. Maximal degree in co-relation 2957. Up to 288 conditions per place. [2023-11-06 22:53:41,472 INFO L140 encePairwiseOnDemand]: 198/208 looper letters, 86 selfloop transitions, 24 changer transitions 34/144 dead transitions. [2023-11-06 22:53:41,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 144 transitions, 1334 flow [2023-11-06 22:53:41,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:53:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:53:41,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 724 transitions. [2023-11-06 22:53:41,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43509615384615385 [2023-11-06 22:53:41,477 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 724 transitions. [2023-11-06 22:53:41,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 724 transitions. [2023-11-06 22:53:41,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:41,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 724 transitions. [2023-11-06 22:53:41,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.5) internal successors, (724), 8 states have internal predecessors, (724), 0 states have call successors, (0), 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 22:53:41,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 208.0) internal successors, (1872), 9 states have internal predecessors, (1872), 0 states have call successors, (0), 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 22:53:41,485 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 208.0) internal successors, (1872), 9 states have internal predecessors, (1872), 0 states have call successors, (0), 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 22:53:41,485 INFO L175 Difference]: Start difference. First operand has 50 places, 61 transitions, 503 flow. Second operand 8 states and 724 transitions. [2023-11-06 22:53:41,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 144 transitions, 1334 flow [2023-11-06 22:53:41,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 144 transitions, 1281 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-06 22:53:41,496 INFO L231 Difference]: Finished difference. Result has 60 places, 82 transitions, 758 flow [2023-11-06 22:53:41,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=758, PETRI_PLACES=60, PETRI_TRANSITIONS=82} [2023-11-06 22:53:41,498 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 32 predicate places. [2023-11-06 22:53:41,498 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 82 transitions, 758 flow [2023-11-06 22:53:41,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.33333333333333) internal successors, (500), 6 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:41,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:41,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:41,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:53:41,500 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:53:41,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:41,501 INFO L85 PathProgramCache]: Analyzing trace with hash -210791925, now seen corresponding path program 2 times [2023-11-06 22:53:41,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:41,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621804083] [2023-11-06 22:53:41,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:41,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:42,970 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 22:53:42,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:42,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621804083] [2023-11-06 22:53:42,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621804083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:42,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:42,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:53:42,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316576592] [2023-11-06 22:53:42,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:42,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:53:42,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:42,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:53:42,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:53:43,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 208 [2023-11-06 22:53:43,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 82 transitions, 758 flow. Second operand has 12 states, 12 states have (on average 82.16666666666667) internal successors, (986), 12 states have internal predecessors, (986), 0 states have call successors, (0), 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 22:53:43,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:43,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 208 [2023-11-06 22:53:43,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:44,036 INFO L124 PetriNetUnfolderBase]: 318/600 cut-off events. [2023-11-06 22:53:44,036 INFO L125 PetriNetUnfolderBase]: For 2132/2132 co-relation queries the response was YES. [2023-11-06 22:53:44,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2917 conditions, 600 events. 318/600 cut-off events. For 2132/2132 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2675 event pairs, 25 based on Foata normal form. 15/615 useless extension candidates. Maximal degree in co-relation 2885. Up to 230 conditions per place. [2023-11-06 22:53:44,044 INFO L140 encePairwiseOnDemand]: 196/208 looper letters, 86 selfloop transitions, 51 changer transitions 34/171 dead transitions. [2023-11-06 22:53:44,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 171 transitions, 1664 flow [2023-11-06 22:53:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:53:44,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:53:44,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1321 transitions. [2023-11-06 22:53:44,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4233974358974359 [2023-11-06 22:53:44,052 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1321 transitions. [2023-11-06 22:53:44,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1321 transitions. [2023-11-06 22:53:44,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:44,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1321 transitions. [2023-11-06 22:53:44,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 88.06666666666666) internal successors, (1321), 15 states have internal predecessors, (1321), 0 states have call successors, (0), 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 22:53:44,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 208.0) internal successors, (3328), 16 states have internal predecessors, (3328), 0 states have call successors, (0), 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 22:53:44,068 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 208.0) internal successors, (3328), 16 states have internal predecessors, (3328), 0 states have call successors, (0), 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 22:53:44,068 INFO L175 Difference]: Start difference. First operand has 60 places, 82 transitions, 758 flow. Second operand 15 states and 1321 transitions. [2023-11-06 22:53:44,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 171 transitions, 1664 flow [2023-11-06 22:53:44,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 171 transitions, 1632 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-11-06 22:53:44,083 INFO L231 Difference]: Finished difference. Result has 81 places, 100 transitions, 1116 flow [2023-11-06 22:53:44,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1116, PETRI_PLACES=81, PETRI_TRANSITIONS=100} [2023-11-06 22:53:44,086 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 53 predicate places. [2023-11-06 22:53:44,086 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 100 transitions, 1116 flow [2023-11-06 22:53:44,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 82.16666666666667) internal successors, (986), 12 states have internal predecessors, (986), 0 states have call successors, (0), 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 22:53:44,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:44,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:44,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:53:44,088 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:53:44,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:44,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1741729473, now seen corresponding path program 3 times [2023-11-06 22:53:44,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:44,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101445692] [2023-11-06 22:53:44,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:44,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:44,996 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 22:53:44,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:44,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101445692] [2023-11-06 22:53:44,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101445692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:44,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:44,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:53:44,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827971879] [2023-11-06 22:53:44,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:44,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:53:44,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:44,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:53:45,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:53:45,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 208 [2023-11-06 22:53:45,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 100 transitions, 1116 flow. Second operand has 8 states, 8 states have (on average 88.75) internal successors, (710), 8 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:45,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:45,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 208 [2023-11-06 22:53:45,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:45,480 INFO L124 PetriNetUnfolderBase]: 246/462 cut-off events. [2023-11-06 22:53:45,481 INFO L125 PetriNetUnfolderBase]: For 2768/2768 co-relation queries the response was YES. [2023-11-06 22:53:45,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2721 conditions, 462 events. 246/462 cut-off events. For 2768/2768 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1866 event pairs, 41 based on Foata normal form. 12/474 useless extension candidates. Maximal degree in co-relation 2678. Up to 340 conditions per place. [2023-11-06 22:53:45,488 INFO L140 encePairwiseOnDemand]: 200/208 looper letters, 72 selfloop transitions, 28 changer transitions 18/118 dead transitions. [2023-11-06 22:53:45,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 118 transitions, 1448 flow [2023-11-06 22:53:45,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:53:45,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:53:45,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 565 transitions. [2023-11-06 22:53:45,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452724358974359 [2023-11-06 22:53:45,492 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 565 transitions. [2023-11-06 22:53:45,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 565 transitions. [2023-11-06 22:53:45,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:45,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 565 transitions. [2023-11-06 22:53:45,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.16666666666667) internal successors, (565), 6 states have internal predecessors, (565), 0 states have call successors, (0), 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 22:53:45,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 0 states have call successors, (0), 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 22:53:45,498 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 0 states have call successors, (0), 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 22:53:45,498 INFO L175 Difference]: Start difference. First operand has 81 places, 100 transitions, 1116 flow. Second operand 6 states and 565 transitions. [2023-11-06 22:53:45,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 118 transitions, 1448 flow [2023-11-06 22:53:45,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 118 transitions, 1391 flow, removed 23 selfloop flow, removed 5 redundant places. [2023-11-06 22:53:45,514 INFO L231 Difference]: Finished difference. Result has 79 places, 88 transitions, 976 flow [2023-11-06 22:53:45,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=976, PETRI_PLACES=79, PETRI_TRANSITIONS=88} [2023-11-06 22:53:45,515 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 51 predicate places. [2023-11-06 22:53:45,515 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 88 transitions, 976 flow [2023-11-06 22:53:45,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.75) internal successors, (710), 8 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:45,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:45,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:45,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:53:45,517 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:53:45,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:45,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1907462861, now seen corresponding path program 4 times [2023-11-06 22:53:45,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:45,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698534390] [2023-11-06 22:53:45,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:45,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:47,456 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 22:53:47,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:47,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698534390] [2023-11-06 22:53:47,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698534390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:47,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:47,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:53:47,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003156287] [2023-11-06 22:53:47,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:47,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:53:47,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:47,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:53:47,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:53:47,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 208 [2023-11-06 22:53:47,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 88 transitions, 976 flow. Second operand has 12 states, 12 states have (on average 79.16666666666667) internal successors, (950), 12 states have internal predecessors, (950), 0 states have call successors, (0), 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 22:53:47,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:47,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 208 [2023-11-06 22:53:47,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:49,111 INFO L124 PetriNetUnfolderBase]: 327/607 cut-off events. [2023-11-06 22:53:49,111 INFO L125 PetriNetUnfolderBase]: For 2937/2937 co-relation queries the response was YES. [2023-11-06 22:53:49,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3394 conditions, 607 events. 327/607 cut-off events. For 2937/2937 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2685 event pairs, 10 based on Foata normal form. 9/616 useless extension candidates. Maximal degree in co-relation 3352. Up to 197 conditions per place. [2023-11-06 22:53:49,121 INFO L140 encePairwiseOnDemand]: 197/208 looper letters, 101 selfloop transitions, 91 changer transitions 7/199 dead transitions. [2023-11-06 22:53:49,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 199 transitions, 2256 flow [2023-11-06 22:53:49,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:53:49,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:53:49,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1507 transitions. [2023-11-06 22:53:49,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025106837606838 [2023-11-06 22:53:49,129 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1507 transitions. [2023-11-06 22:53:49,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1507 transitions. [2023-11-06 22:53:49,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:49,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1507 transitions. [2023-11-06 22:53:49,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 83.72222222222223) internal successors, (1507), 18 states have internal predecessors, (1507), 0 states have call successors, (0), 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 22:53:49,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 208.0) internal successors, (3952), 19 states have internal predecessors, (3952), 0 states have call successors, (0), 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 22:53:49,145 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 208.0) internal successors, (3952), 19 states have internal predecessors, (3952), 0 states have call successors, (0), 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 22:53:49,145 INFO L175 Difference]: Start difference. First operand has 79 places, 88 transitions, 976 flow. Second operand 18 states and 1507 transitions. [2023-11-06 22:53:49,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 199 transitions, 2256 flow [2023-11-06 22:53:49,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 199 transitions, 2133 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-11-06 22:53:49,168 INFO L231 Difference]: Finished difference. Result has 95 places, 138 transitions, 1707 flow [2023-11-06 22:53:49,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1707, PETRI_PLACES=95, PETRI_TRANSITIONS=138} [2023-11-06 22:53:49,170 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 67 predicate places. [2023-11-06 22:53:49,171 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 138 transitions, 1707 flow [2023-11-06 22:53:49,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 79.16666666666667) internal successors, (950), 12 states have internal predecessors, (950), 0 states have call successors, (0), 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 22:53:49,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:49,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:49,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:53:49,172 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:53:49,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:49,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2135530235, now seen corresponding path program 5 times [2023-11-06 22:53:49,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:49,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139559192] [2023-11-06 22:53:49,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:49,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:50,176 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 22:53:50,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:50,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139559192] [2023-11-06 22:53:50,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139559192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:50,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:50,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:53:50,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138566972] [2023-11-06 22:53:50,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:50,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:53:50,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:50,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:53:50,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:53:50,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 208 [2023-11-06 22:53:50,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 138 transitions, 1707 flow. Second operand has 8 states, 8 states have (on average 86.75) internal successors, (694), 8 states have internal predecessors, (694), 0 states have call successors, (0), 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 22:53:50,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:50,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 208 [2023-11-06 22:53:50,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:50,816 INFO L124 PetriNetUnfolderBase]: 323/615 cut-off events. [2023-11-06 22:53:50,816 INFO L125 PetriNetUnfolderBase]: For 3190/3190 co-relation queries the response was YES. [2023-11-06 22:53:50,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3844 conditions, 615 events. 323/615 cut-off events. For 3190/3190 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2796 event pairs, 34 based on Foata normal form. 9/624 useless extension candidates. Maximal degree in co-relation 3797. Up to 217 conditions per place. [2023-11-06 22:53:50,825 INFO L140 encePairwiseOnDemand]: 201/208 looper letters, 97 selfloop transitions, 72 changer transitions 9/178 dead transitions. [2023-11-06 22:53:50,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 178 transitions, 2369 flow [2023-11-06 22:53:50,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:53:50,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:53:50,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 738 transitions. [2023-11-06 22:53:50,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44350961538461536 [2023-11-06 22:53:50,829 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 738 transitions. [2023-11-06 22:53:50,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 738 transitions. [2023-11-06 22:53:50,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:50,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 738 transitions. [2023-11-06 22:53:50,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.25) internal successors, (738), 8 states have internal predecessors, (738), 0 states have call successors, (0), 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 22:53:50,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 208.0) internal successors, (1872), 9 states have internal predecessors, (1872), 0 states have call successors, (0), 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 22:53:50,837 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 208.0) internal successors, (1872), 9 states have internal predecessors, (1872), 0 states have call successors, (0), 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 22:53:50,837 INFO L175 Difference]: Start difference. First operand has 95 places, 138 transitions, 1707 flow. Second operand 8 states and 738 transitions. [2023-11-06 22:53:50,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 178 transitions, 2369 flow [2023-11-06 22:53:50,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 178 transitions, 2226 flow, removed 35 selfloop flow, removed 5 redundant places. [2023-11-06 22:53:50,862 INFO L231 Difference]: Finished difference. Result has 101 places, 142 transitions, 1921 flow [2023-11-06 22:53:50,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1921, PETRI_PLACES=101, PETRI_TRANSITIONS=142} [2023-11-06 22:53:50,863 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 73 predicate places. [2023-11-06 22:53:50,863 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 142 transitions, 1921 flow [2023-11-06 22:53:50,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 86.75) internal successors, (694), 8 states have internal predecessors, (694), 0 states have call successors, (0), 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 22:53:50,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:50,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:50,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:53:50,865 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:53:50,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:50,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1788186571, now seen corresponding path program 6 times [2023-11-06 22:53:50,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:50,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556166372] [2023-11-06 22:53:50,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:50,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:52,262 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 22:53:52,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:52,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556166372] [2023-11-06 22:53:52,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556166372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:52,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:52,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:53:52,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454617486] [2023-11-06 22:53:52,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:52,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:53:52,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:52,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:53:52,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:53:52,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 208 [2023-11-06 22:53:52,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 142 transitions, 1921 flow. Second operand has 11 states, 11 states have (on average 79.27272727272727) internal successors, (872), 11 states have internal predecessors, (872), 0 states have call successors, (0), 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 22:53:52,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:52,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 208 [2023-11-06 22:53:52,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:53,358 INFO L124 PetriNetUnfolderBase]: 329/634 cut-off events. [2023-11-06 22:53:53,359 INFO L125 PetriNetUnfolderBase]: For 4371/4371 co-relation queries the response was YES. [2023-11-06 22:53:53,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4089 conditions, 634 events. 329/634 cut-off events. For 4371/4371 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2943 event pairs, 46 based on Foata normal form. 9/643 useless extension candidates. Maximal degree in co-relation 4038. Up to 289 conditions per place. [2023-11-06 22:53:53,370 INFO L140 encePairwiseOnDemand]: 197/208 looper letters, 123 selfloop transitions, 46 changer transitions 9/178 dead transitions. [2023-11-06 22:53:53,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 178 transitions, 2555 flow [2023-11-06 22:53:53,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:53:53,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:53:53,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 684 transitions. [2023-11-06 22:53:53,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4110576923076923 [2023-11-06 22:53:53,375 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 684 transitions. [2023-11-06 22:53:53,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 684 transitions. [2023-11-06 22:53:53,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:53,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 684 transitions. [2023-11-06 22:53:53,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 85.5) internal successors, (684), 8 states have internal predecessors, (684), 0 states have call successors, (0), 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 22:53:53,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 208.0) internal successors, (1872), 9 states have internal predecessors, (1872), 0 states have call successors, (0), 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 22:53:53,383 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 208.0) internal successors, (1872), 9 states have internal predecessors, (1872), 0 states have call successors, (0), 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 22:53:53,383 INFO L175 Difference]: Start difference. First operand has 101 places, 142 transitions, 1921 flow. Second operand 8 states and 684 transitions. [2023-11-06 22:53:53,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 178 transitions, 2555 flow [2023-11-06 22:53:53,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 178 transitions, 2446 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-11-06 22:53:53,417 INFO L231 Difference]: Finished difference. Result has 106 places, 149 transitions, 2042 flow [2023-11-06 22:53:53,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2042, PETRI_PLACES=106, PETRI_TRANSITIONS=149} [2023-11-06 22:53:53,418 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 78 predicate places. [2023-11-06 22:53:53,418 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 149 transitions, 2042 flow [2023-11-06 22:53:53,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 79.27272727272727) internal successors, (872), 11 states have internal predecessors, (872), 0 states have call successors, (0), 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 22:53:53,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:53,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:53,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:53:53,419 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:53:53,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:53,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1898227031, now seen corresponding path program 7 times [2023-11-06 22:53:53,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:53,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312715786] [2023-11-06 22:53:53,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:53,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:54,618 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 22:53:54,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:54,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312715786] [2023-11-06 22:53:54,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312715786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:54,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:54,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:53:54,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398728368] [2023-11-06 22:53:54,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:54,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:53:54,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:54,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:53:54,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:53:54,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 208 [2023-11-06 22:53:54,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 149 transitions, 2042 flow. Second operand has 10 states, 10 states have (on average 82.4) internal successors, (824), 10 states have internal predecessors, (824), 0 states have call successors, (0), 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 22:53:54,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:54,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 208 [2023-11-06 22:53:54,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:55,473 INFO L124 PetriNetUnfolderBase]: 365/702 cut-off events. [2023-11-06 22:53:55,473 INFO L125 PetriNetUnfolderBase]: For 4620/4620 co-relation queries the response was YES. [2023-11-06 22:53:55,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4712 conditions, 702 events. 365/702 cut-off events. For 4620/4620 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3380 event pairs, 47 based on Foata normal form. 9/711 useless extension candidates. Maximal degree in co-relation 4660. Up to 294 conditions per place. [2023-11-06 22:53:55,484 INFO L140 encePairwiseOnDemand]: 200/208 looper letters, 100 selfloop transitions, 31 changer transitions 73/204 dead transitions. [2023-11-06 22:53:55,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 204 transitions, 2953 flow [2023-11-06 22:53:55,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:53:55,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:53:55,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 964 transitions. [2023-11-06 22:53:55,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42132867132867136 [2023-11-06 22:53:55,489 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 964 transitions. [2023-11-06 22:53:55,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 964 transitions. [2023-11-06 22:53:55,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:55,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 964 transitions. [2023-11-06 22:53:55,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 87.63636363636364) internal successors, (964), 11 states have internal predecessors, (964), 0 states have call successors, (0), 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 22:53:55,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 208.0) internal successors, (2496), 12 states have internal predecessors, (2496), 0 states have call successors, (0), 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 22:53:55,499 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 208.0) internal successors, (2496), 12 states have internal predecessors, (2496), 0 states have call successors, (0), 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 22:53:55,499 INFO L175 Difference]: Start difference. First operand has 106 places, 149 transitions, 2042 flow. Second operand 11 states and 964 transitions. [2023-11-06 22:53:55,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 204 transitions, 2953 flow [2023-11-06 22:53:55,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 204 transitions, 2859 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-06 22:53:55,535 INFO L231 Difference]: Finished difference. Result has 114 places, 115 transitions, 1510 flow [2023-11-06 22:53:55,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=1960, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1510, PETRI_PLACES=114, PETRI_TRANSITIONS=115} [2023-11-06 22:53:55,536 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 86 predicate places. [2023-11-06 22:53:55,536 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 115 transitions, 1510 flow [2023-11-06 22:53:55,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 82.4) internal successors, (824), 10 states have internal predecessors, (824), 0 states have call successors, (0), 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 22:53:55,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:55,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:55,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:53:55,538 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:53:55,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:55,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1306059455, now seen corresponding path program 8 times [2023-11-06 22:53:55,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:55,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143206853] [2023-11-06 22:53:55,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:55,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:56,837 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 22:53:56,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:56,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143206853] [2023-11-06 22:53:56,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143206853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:56,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:56,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:53:56,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625719581] [2023-11-06 22:53:56,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:56,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:53:56,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:56,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:53:56,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:53:56,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 208 [2023-11-06 22:53:56,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 115 transitions, 1510 flow. Second operand has 8 states, 8 states have (on average 89.75) internal successors, (718), 8 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:56,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:56,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 208 [2023-11-06 22:53:56,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:57,514 INFO L124 PetriNetUnfolderBase]: 285/563 cut-off events. [2023-11-06 22:53:57,514 INFO L125 PetriNetUnfolderBase]: For 3743/3743 co-relation queries the response was YES. [2023-11-06 22:53:57,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3603 conditions, 563 events. 285/563 cut-off events. For 3743/3743 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2602 event pairs, 14 based on Foata normal form. 9/572 useless extension candidates. Maximal degree in co-relation 3549. Up to 283 conditions per place. [2023-11-06 22:53:57,524 INFO L140 encePairwiseOnDemand]: 200/208 looper letters, 135 selfloop transitions, 51 changer transitions 3/189 dead transitions. [2023-11-06 22:53:57,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 189 transitions, 2593 flow [2023-11-06 22:53:57,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:53:57,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:53:57,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 850 transitions. [2023-11-06 22:53:57,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45405982905982906 [2023-11-06 22:53:57,527 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 850 transitions. [2023-11-06 22:53:57,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 850 transitions. [2023-11-06 22:53:57,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:57,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 850 transitions. [2023-11-06 22:53:57,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.44444444444444) internal successors, (850), 9 states have internal predecessors, (850), 0 states have call successors, (0), 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 22:53:57,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 208.0) internal successors, (2080), 10 states have internal predecessors, (2080), 0 states have call successors, (0), 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 22:53:57,535 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 208.0) internal successors, (2080), 10 states have internal predecessors, (2080), 0 states have call successors, (0), 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 22:53:57,535 INFO L175 Difference]: Start difference. First operand has 114 places, 115 transitions, 1510 flow. Second operand 9 states and 850 transitions. [2023-11-06 22:53:57,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 189 transitions, 2593 flow [2023-11-06 22:53:57,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 189 transitions, 2428 flow, removed 24 selfloop flow, removed 13 redundant places. [2023-11-06 22:53:57,563 INFO L231 Difference]: Finished difference. Result has 104 places, 135 transitions, 1810 flow [2023-11-06 22:53:57,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1810, PETRI_PLACES=104, PETRI_TRANSITIONS=135} [2023-11-06 22:53:57,563 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 76 predicate places. [2023-11-06 22:53:57,564 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 135 transitions, 1810 flow [2023-11-06 22:53:57,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.75) internal successors, (718), 8 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:57,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:57,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:57,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:53:57,565 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:53:57,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:57,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1378450005, now seen corresponding path program 9 times [2023-11-06 22:53:57,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:57,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086984827] [2023-11-06 22:53:57,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:57,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:58,997 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 22:53:58,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:58,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086984827] [2023-11-06 22:53:58,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086984827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:58,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:58,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:53:58,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888028555] [2023-11-06 22:53:58,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:58,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:53:58,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:58,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:53:58,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:53:59,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 208 [2023-11-06 22:53:59,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 135 transitions, 1810 flow. Second operand has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 0 states have call successors, (0), 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 22:53:59,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:59,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 208 [2023-11-06 22:53:59,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:59,967 INFO L124 PetriNetUnfolderBase]: 320/678 cut-off events. [2023-11-06 22:53:59,967 INFO L125 PetriNetUnfolderBase]: For 4875/4875 co-relation queries the response was YES. [2023-11-06 22:53:59,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4521 conditions, 678 events. 320/678 cut-off events. For 4875/4875 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3530 event pairs, 19 based on Foata normal form. 3/681 useless extension candidates. Maximal degree in co-relation 4470. Up to 199 conditions per place. [2023-11-06 22:53:59,978 INFO L140 encePairwiseOnDemand]: 196/208 looper letters, 115 selfloop transitions, 108 changer transitions 1/224 dead transitions. [2023-11-06 22:53:59,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 224 transitions, 3246 flow [2023-11-06 22:53:59,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:53:59,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:53:59,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 877 transitions. [2023-11-06 22:53:59,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4216346153846154 [2023-11-06 22:53:59,982 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 877 transitions. [2023-11-06 22:53:59,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 877 transitions. [2023-11-06 22:53:59,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:59,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 877 transitions. [2023-11-06 22:53:59,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.7) internal successors, (877), 10 states have internal predecessors, (877), 0 states have call successors, (0), 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 22:53:59,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 208.0) internal successors, (2288), 11 states have internal predecessors, (2288), 0 states have call successors, (0), 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 22:54:00,007 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 208.0) internal successors, (2288), 11 states have internal predecessors, (2288), 0 states have call successors, (0), 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 22:54:00,007 INFO L175 Difference]: Start difference. First operand has 104 places, 135 transitions, 1810 flow. Second operand 10 states and 877 transitions. [2023-11-06 22:54:00,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 224 transitions, 3246 flow [2023-11-06 22:54:00,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 224 transitions, 3182 flow, removed 22 selfloop flow, removed 5 redundant places. [2023-11-06 22:54:00,043 INFO L231 Difference]: Finished difference. Result has 112 places, 179 transitions, 2720 flow [2023-11-06 22:54:00,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2720, PETRI_PLACES=112, PETRI_TRANSITIONS=179} [2023-11-06 22:54:00,044 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 84 predicate places. [2023-11-06 22:54:00,044 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 179 transitions, 2720 flow [2023-11-06 22:54:00,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 0 states have call successors, (0), 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 22:54:00,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:00,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:00,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:54:00,045 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:54:00,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:00,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1519986064, now seen corresponding path program 1 times [2023-11-06 22:54:00,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:00,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699084153] [2023-11-06 22:54:00,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:00,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:01,927 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 22:54:01,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:01,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699084153] [2023-11-06 22:54:01,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699084153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:01,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:01,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:54:01,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168693767] [2023-11-06 22:54:01,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:01,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:54:01,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:01,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:54:01,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:54:02,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 208 [2023-11-06 22:54:02,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 179 transitions, 2720 flow. Second operand has 11 states, 11 states have (on average 81.36363636363636) internal successors, (895), 11 states have internal predecessors, (895), 0 states have call successors, (0), 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 22:54:02,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:02,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 208 [2023-11-06 22:54:02,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:02,785 INFO L124 PetriNetUnfolderBase]: 363/773 cut-off events. [2023-11-06 22:54:02,785 INFO L125 PetriNetUnfolderBase]: For 7179/7179 co-relation queries the response was YES. [2023-11-06 22:54:02,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5617 conditions, 773 events. 363/773 cut-off events. For 7179/7179 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4224 event pairs, 24 based on Foata normal form. 12/785 useless extension candidates. Maximal degree in co-relation 5563. Up to 474 conditions per place. [2023-11-06 22:54:02,799 INFO L140 encePairwiseOnDemand]: 199/208 looper letters, 134 selfloop transitions, 89 changer transitions 13/236 dead transitions. [2023-11-06 22:54:02,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 236 transitions, 3793 flow [2023-11-06 22:54:02,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:54:02,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:54:02,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 870 transitions. [2023-11-06 22:54:02,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4182692307692308 [2023-11-06 22:54:02,802 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 870 transitions. [2023-11-06 22:54:02,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 870 transitions. [2023-11-06 22:54:02,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:02,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 870 transitions. [2023-11-06 22:54:02,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 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 22:54:02,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 208.0) internal successors, (2288), 11 states have internal predecessors, (2288), 0 states have call successors, (0), 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 22:54:02,809 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 208.0) internal successors, (2288), 11 states have internal predecessors, (2288), 0 states have call successors, (0), 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 22:54:02,809 INFO L175 Difference]: Start difference. First operand has 112 places, 179 transitions, 2720 flow. Second operand 10 states and 870 transitions. [2023-11-06 22:54:02,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 236 transitions, 3793 flow [2023-11-06 22:54:02,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 236 transitions, 3683 flow, removed 27 selfloop flow, removed 3 redundant places. [2023-11-06 22:54:02,868 INFO L231 Difference]: Finished difference. Result has 121 places, 194 transitions, 3179 flow [2023-11-06 22:54:02,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=2620, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3179, PETRI_PLACES=121, PETRI_TRANSITIONS=194} [2023-11-06 22:54:02,869 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 93 predicate places. [2023-11-06 22:54:02,869 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 194 transitions, 3179 flow [2023-11-06 22:54:02,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.36363636363636) internal successors, (895), 11 states have internal predecessors, (895), 0 states have call successors, (0), 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 22:54:02,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:02,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:02,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:54:02,870 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:54:02,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:02,871 INFO L85 PathProgramCache]: Analyzing trace with hash 549067704, now seen corresponding path program 2 times [2023-11-06 22:54:02,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:02,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305718901] [2023-11-06 22:54:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:02,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:04,342 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 22:54:04,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:04,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305718901] [2023-11-06 22:54:04,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305718901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:04,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:04,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:54:04,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935590390] [2023-11-06 22:54:04,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:04,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:54:04,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:04,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:54:04,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:54:04,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 208 [2023-11-06 22:54:04,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 194 transitions, 3179 flow. Second operand has 12 states, 12 states have (on average 83.25) internal successors, (999), 12 states have internal predecessors, (999), 0 states have call successors, (0), 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 22:54:04,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:04,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 208 [2023-11-06 22:54:04,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:05,452 INFO L124 PetriNetUnfolderBase]: 398/862 cut-off events. [2023-11-06 22:54:05,453 INFO L125 PetriNetUnfolderBase]: For 9972/9972 co-relation queries the response was YES. [2023-11-06 22:54:05,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6622 conditions, 862 events. 398/862 cut-off events. For 9972/9972 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4980 event pairs, 34 based on Foata normal form. 14/876 useless extension candidates. Maximal degree in co-relation 6566. Up to 553 conditions per place. [2023-11-06 22:54:05,466 INFO L140 encePairwiseOnDemand]: 197/208 looper letters, 147 selfloop transitions, 115 changer transitions 32/294 dead transitions. [2023-11-06 22:54:05,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 294 transitions, 5129 flow [2023-11-06 22:54:05,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:54:05,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 22:54:05,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1490 transitions. [2023-11-06 22:54:05,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42138009049773756 [2023-11-06 22:54:05,470 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1490 transitions. [2023-11-06 22:54:05,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1490 transitions. [2023-11-06 22:54:05,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:05,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1490 transitions. [2023-11-06 22:54:05,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 87.6470588235294) internal successors, (1490), 17 states have internal predecessors, (1490), 0 states have call successors, (0), 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 22:54:05,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 208.0) internal successors, (3744), 18 states have internal predecessors, (3744), 0 states have call successors, (0), 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 22:54:05,480 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 208.0) internal successors, (3744), 18 states have internal predecessors, (3744), 0 states have call successors, (0), 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 22:54:05,480 INFO L175 Difference]: Start difference. First operand has 121 places, 194 transitions, 3179 flow. Second operand 17 states and 1490 transitions. [2023-11-06 22:54:05,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 294 transitions, 5129 flow [2023-11-06 22:54:05,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 294 transitions, 4980 flow, removed 43 selfloop flow, removed 5 redundant places. [2023-11-06 22:54:05,560 INFO L231 Difference]: Finished difference. Result has 142 places, 237 transitions, 4343 flow [2023-11-06 22:54:05,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=3090, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4343, PETRI_PLACES=142, PETRI_TRANSITIONS=237} [2023-11-06 22:54:05,561 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 114 predicate places. [2023-11-06 22:54:05,561 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 237 transitions, 4343 flow [2023-11-06 22:54:05,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 83.25) internal successors, (999), 12 states have internal predecessors, (999), 0 states have call successors, (0), 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 22:54:05,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:05,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:05,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:54:05,562 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:54:05,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:05,563 INFO L85 PathProgramCache]: Analyzing trace with hash 778756314, now seen corresponding path program 3 times [2023-11-06 22:54:05,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:05,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619167165] [2023-11-06 22:54:05,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:05,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:06,379 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 22:54:06,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:06,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619167165] [2023-11-06 22:54:06,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619167165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:06,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:06,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:54:06,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357486464] [2023-11-06 22:54:06,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:06,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:54:06,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:06,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:54:06,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:54:06,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 208 [2023-11-06 22:54:06,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 237 transitions, 4343 flow. Second operand has 7 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 0 states have call successors, (0), 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 22:54:06,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:06,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 208 [2023-11-06 22:54:06,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:06,941 INFO L124 PetriNetUnfolderBase]: 361/772 cut-off events. [2023-11-06 22:54:06,941 INFO L125 PetriNetUnfolderBase]: For 9795/9795 co-relation queries the response was YES. [2023-11-06 22:54:06,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6491 conditions, 772 events. 361/772 cut-off events. For 9795/9795 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4299 event pairs, 0 based on Foata normal form. 6/778 useless extension candidates. Maximal degree in co-relation 6425. Up to 445 conditions per place. [2023-11-06 22:54:06,953 INFO L140 encePairwiseOnDemand]: 198/208 looper letters, 206 selfloop transitions, 60 changer transitions 16/282 dead transitions. [2023-11-06 22:54:06,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 282 transitions, 5582 flow [2023-11-06 22:54:06,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:54:06,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:54:06,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 725 transitions. [2023-11-06 22:54:06,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43569711538461536 [2023-11-06 22:54:06,956 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 725 transitions. [2023-11-06 22:54:06,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 725 transitions. [2023-11-06 22:54:06,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:06,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 725 transitions. [2023-11-06 22:54:06,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.625) internal successors, (725), 8 states have internal predecessors, (725), 0 states have call successors, (0), 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 22:54:06,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 208.0) internal successors, (1872), 9 states have internal predecessors, (1872), 0 states have call successors, (0), 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 22:54:06,962 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 208.0) internal successors, (1872), 9 states have internal predecessors, (1872), 0 states have call successors, (0), 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 22:54:06,962 INFO L175 Difference]: Start difference. First operand has 142 places, 237 transitions, 4343 flow. Second operand 8 states and 725 transitions. [2023-11-06 22:54:06,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 282 transitions, 5582 flow [2023-11-06 22:54:07,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 282 transitions, 5433 flow, removed 28 selfloop flow, removed 7 redundant places. [2023-11-06 22:54:07,044 INFO L231 Difference]: Finished difference. Result has 143 places, 245 transitions, 4548 flow [2023-11-06 22:54:07,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=4210, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4548, PETRI_PLACES=143, PETRI_TRANSITIONS=245} [2023-11-06 22:54:07,045 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 115 predicate places. [2023-11-06 22:54:07,045 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 245 transitions, 4548 flow [2023-11-06 22:54:07,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 0 states have call successors, (0), 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 22:54:07,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:07,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:07,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:54:07,046 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:54:07,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:07,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1831945901, now seen corresponding path program 1 times [2023-11-06 22:54:07,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:07,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467180482] [2023-11-06 22:54:07,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:07,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:07,550 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 22:54:07,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:07,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467180482] [2023-11-06 22:54:07,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467180482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:07,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:07,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:54:07,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857336422] [2023-11-06 22:54:07,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:07,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:54:07,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:07,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:54:07,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:54:07,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 208 [2023-11-06 22:54:07,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 245 transitions, 4548 flow. Second operand has 6 states, 6 states have (on average 89.5) internal successors, (537), 6 states have internal predecessors, (537), 0 states have call successors, (0), 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 22:54:07,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:07,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 208 [2023-11-06 22:54:07,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:08,079 INFO L124 PetriNetUnfolderBase]: 362/800 cut-off events. [2023-11-06 22:54:08,080 INFO L125 PetriNetUnfolderBase]: For 11008/11008 co-relation queries the response was YES. [2023-11-06 22:54:08,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6849 conditions, 800 events. 362/800 cut-off events. For 11008/11008 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4562 event pairs, 35 based on Foata normal form. 14/814 useless extension candidates. Maximal degree in co-relation 6781. Up to 488 conditions per place. [2023-11-06 22:54:08,088 INFO L140 encePairwiseOnDemand]: 199/208 looper letters, 167 selfloop transitions, 72 changer transitions 35/274 dead transitions. [2023-11-06 22:54:08,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 274 transitions, 5422 flow [2023-11-06 22:54:08,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:54:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:54:08,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 655 transitions. [2023-11-06 22:54:08,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4498626373626374 [2023-11-06 22:54:08,091 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 655 transitions. [2023-11-06 22:54:08,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 655 transitions. [2023-11-06 22:54:08,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:08,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 655 transitions. [2023-11-06 22:54:08,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.57142857142857) internal successors, (655), 7 states have internal predecessors, (655), 0 states have call successors, (0), 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 22:54:08,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 0 states have call successors, (0), 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 22:54:08,096 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 0 states have call successors, (0), 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 22:54:08,096 INFO L175 Difference]: Start difference. First operand has 143 places, 245 transitions, 4548 flow. Second operand 7 states and 655 transitions. [2023-11-06 22:54:08,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 274 transitions, 5422 flow [2023-11-06 22:54:08,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 274 transitions, 5374 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-11-06 22:54:08,188 INFO L231 Difference]: Finished difference. Result has 148 places, 232 transitions, 4411 flow [2023-11-06 22:54:08,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=4508, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4411, PETRI_PLACES=148, PETRI_TRANSITIONS=232} [2023-11-06 22:54:08,189 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 120 predicate places. [2023-11-06 22:54:08,189 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 232 transitions, 4411 flow [2023-11-06 22:54:08,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.5) internal successors, (537), 6 states have internal predecessors, (537), 0 states have call successors, (0), 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 22:54:08,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:08,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:08,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:54:08,190 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:54:08,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:08,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1262657885, now seen corresponding path program 2 times [2023-11-06 22:54:08,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:08,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806370734] [2023-11-06 22:54:08,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:08,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:09,077 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 22:54:09,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:09,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806370734] [2023-11-06 22:54:09,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806370734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:09,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:09,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:54:09,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032336908] [2023-11-06 22:54:09,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:09,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:54:09,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:09,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:54:09,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:54:09,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 208 [2023-11-06 22:54:09,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 232 transitions, 4411 flow. Second operand has 8 states, 8 states have (on average 85.875) internal successors, (687), 8 states have internal predecessors, (687), 0 states have call successors, (0), 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 22:54:09,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:09,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 208 [2023-11-06 22:54:09,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:09,707 INFO L124 PetriNetUnfolderBase]: 308/687 cut-off events. [2023-11-06 22:54:09,707 INFO L125 PetriNetUnfolderBase]: For 10022/10022 co-relation queries the response was YES. [2023-11-06 22:54:09,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6095 conditions, 687 events. 308/687 cut-off events. For 10022/10022 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3755 event pairs, 28 based on Foata normal form. 6/693 useless extension candidates. Maximal degree in co-relation 6025. Up to 452 conditions per place. [2023-11-06 22:54:09,716 INFO L140 encePairwiseOnDemand]: 200/208 looper letters, 164 selfloop transitions, 71 changer transitions 12/247 dead transitions. [2023-11-06 22:54:09,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 247 transitions, 5019 flow [2023-11-06 22:54:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:54:09,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:54:09,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 634 transitions. [2023-11-06 22:54:09,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43543956043956045 [2023-11-06 22:54:09,719 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 634 transitions. [2023-11-06 22:54:09,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 634 transitions. [2023-11-06 22:54:09,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:09,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 634 transitions. [2023-11-06 22:54:09,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.57142857142857) internal successors, (634), 7 states have internal predecessors, (634), 0 states have call successors, (0), 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 22:54:09,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 0 states have call successors, (0), 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 22:54:09,725 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 0 states have call successors, (0), 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 22:54:09,725 INFO L175 Difference]: Start difference. First operand has 148 places, 232 transitions, 4411 flow. Second operand 7 states and 634 transitions. [2023-11-06 22:54:09,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 247 transitions, 5019 flow [2023-11-06 22:54:09,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 247 transitions, 4738 flow, removed 22 selfloop flow, removed 8 redundant places. [2023-11-06 22:54:09,826 INFO L231 Difference]: Finished difference. Result has 147 places, 229 transitions, 4265 flow [2023-11-06 22:54:09,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=4130, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4265, PETRI_PLACES=147, PETRI_TRANSITIONS=229} [2023-11-06 22:54:09,827 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 119 predicate places. [2023-11-06 22:54:09,828 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 229 transitions, 4265 flow [2023-11-06 22:54:09,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.875) internal successors, (687), 8 states have internal predecessors, (687), 0 states have call successors, (0), 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 22:54:09,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:09,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:09,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 22:54:09,829 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:54:09,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:09,829 INFO L85 PathProgramCache]: Analyzing trace with hash -115174691, now seen corresponding path program 3 times [2023-11-06 22:54:09,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:09,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602361078] [2023-11-06 22:54:09,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:09,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:10,550 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 22:54:10,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:10,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602361078] [2023-11-06 22:54:10,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602361078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:10,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:10,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:54:10,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419962970] [2023-11-06 22:54:10,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:10,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:54:10,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:10,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:54:10,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:54:10,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 208 [2023-11-06 22:54:10,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 229 transitions, 4265 flow. Second operand has 8 states, 8 states have (on average 85.875) internal successors, (687), 8 states have internal predecessors, (687), 0 states have call successors, (0), 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 22:54:10,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:10,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 208 [2023-11-06 22:54:10,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:11,147 INFO L124 PetriNetUnfolderBase]: 309/701 cut-off events. [2023-11-06 22:54:11,147 INFO L125 PetriNetUnfolderBase]: For 10572/10572 co-relation queries the response was YES. [2023-11-06 22:54:11,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6083 conditions, 701 events. 309/701 cut-off events. For 10572/10572 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3911 event pairs, 26 based on Foata normal form. 12/713 useless extension candidates. Maximal degree in co-relation 6016. Up to 561 conditions per place. [2023-11-06 22:54:11,154 INFO L140 encePairwiseOnDemand]: 201/208 looper letters, 184 selfloop transitions, 44 changer transitions 23/251 dead transitions. [2023-11-06 22:54:11,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 251 transitions, 5015 flow [2023-11-06 22:54:11,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:54:11,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:54:11,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 711 transitions. [2023-11-06 22:54:11,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42728365384615385 [2023-11-06 22:54:11,157 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 711 transitions. [2023-11-06 22:54:11,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 711 transitions. [2023-11-06 22:54:11,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:11,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 711 transitions. [2023-11-06 22:54:11,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 88.875) internal successors, (711), 8 states have internal predecessors, (711), 0 states have call successors, (0), 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 22:54:11,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 208.0) internal successors, (1872), 9 states have internal predecessors, (1872), 0 states have call successors, (0), 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 22:54:11,162 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 208.0) internal successors, (1872), 9 states have internal predecessors, (1872), 0 states have call successors, (0), 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 22:54:11,163 INFO L175 Difference]: Start difference. First operand has 147 places, 229 transitions, 4265 flow. Second operand 8 states and 711 transitions. [2023-11-06 22:54:11,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 251 transitions, 5015 flow [2023-11-06 22:54:11,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 251 transitions, 4837 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-06 22:54:11,248 INFO L231 Difference]: Finished difference. Result has 149 places, 222 transitions, 4013 flow [2023-11-06 22:54:11,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=4087, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4013, PETRI_PLACES=149, PETRI_TRANSITIONS=222} [2023-11-06 22:54:11,249 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 121 predicate places. [2023-11-06 22:54:11,249 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 222 transitions, 4013 flow [2023-11-06 22:54:11,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.875) internal successors, (687), 8 states have internal predecessors, (687), 0 states have call successors, (0), 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 22:54:11,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:11,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:11,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 22:54:11,250 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:54:11,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:11,250 INFO L85 PathProgramCache]: Analyzing trace with hash -618633199, now seen corresponding path program 4 times [2023-11-06 22:54:11,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:11,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025944195] [2023-11-06 22:54:11,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:11,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:11,717 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 22:54:11,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:11,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025944195] [2023-11-06 22:54:11,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025944195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:11,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:11,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:54:11,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303635454] [2023-11-06 22:54:11,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:11,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:54:11,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:11,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:54:11,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:54:11,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 208 [2023-11-06 22:54:11,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 222 transitions, 4013 flow. Second operand has 7 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 0 states have call successors, (0), 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 22:54:11,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:11,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 208 [2023-11-06 22:54:11,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:12,197 INFO L124 PetriNetUnfolderBase]: 289/646 cut-off events. [2023-11-06 22:54:12,197 INFO L125 PetriNetUnfolderBase]: For 9820/9820 co-relation queries the response was YES. [2023-11-06 22:54:12,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5470 conditions, 646 events. 289/646 cut-off events. For 9820/9820 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3546 event pairs, 40 based on Foata normal form. 12/658 useless extension candidates. Maximal degree in co-relation 5403. Up to 337 conditions per place. [2023-11-06 22:54:12,204 INFO L140 encePairwiseOnDemand]: 199/208 looper letters, 167 selfloop transitions, 48 changer transitions 27/242 dead transitions. [2023-11-06 22:54:12,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 242 transitions, 4726 flow [2023-11-06 22:54:12,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:54:12,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:54:12,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 646 transitions. [2023-11-06 22:54:12,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44368131868131866 [2023-11-06 22:54:12,208 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 646 transitions. [2023-11-06 22:54:12,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 646 transitions. [2023-11-06 22:54:12,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:12,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 646 transitions. [2023-11-06 22:54:12,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.28571428571429) internal successors, (646), 7 states have internal predecessors, (646), 0 states have call successors, (0), 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 22:54:12,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 0 states have call successors, (0), 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 22:54:12,212 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 0 states have call successors, (0), 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 22:54:12,213 INFO L175 Difference]: Start difference. First operand has 149 places, 222 transitions, 4013 flow. Second operand 7 states and 646 transitions. [2023-11-06 22:54:12,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 242 transitions, 4726 flow [2023-11-06 22:54:12,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 242 transitions, 4543 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-11-06 22:54:12,286 INFO L231 Difference]: Finished difference. Result has 148 places, 204 transitions, 3646 flow [2023-11-06 22:54:12,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=3805, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3646, PETRI_PLACES=148, PETRI_TRANSITIONS=204} [2023-11-06 22:54:12,287 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 120 predicate places. [2023-11-06 22:54:12,287 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 204 transitions, 3646 flow [2023-11-06 22:54:12,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 0 states have call successors, (0), 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 22:54:12,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:12,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:12,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-06 22:54:12,288 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:54:12,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:12,289 INFO L85 PathProgramCache]: Analyzing trace with hash -687845564, now seen corresponding path program 1 times [2023-11-06 22:54:12,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:12,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081046498] [2023-11-06 22:54:12,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:12,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:14,713 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 22:54:14,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:14,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081046498] [2023-11-06 22:54:14,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081046498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:14,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:14,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:54:14,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272656306] [2023-11-06 22:54:14,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:14,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:54:14,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:14,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:54:14,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:54:14,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 208 [2023-11-06 22:54:14,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 204 transitions, 3646 flow. Second operand has 13 states, 13 states have (on average 81.23076923076923) internal successors, (1056), 13 states have internal predecessors, (1056), 0 states have call successors, (0), 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 22:54:14,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:14,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 208 [2023-11-06 22:54:14,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:16,071 INFO L124 PetriNetUnfolderBase]: 310/706 cut-off events. [2023-11-06 22:54:16,071 INFO L125 PetriNetUnfolderBase]: For 9504/9504 co-relation queries the response was YES. [2023-11-06 22:54:16,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5991 conditions, 706 events. 310/706 cut-off events. For 9504/9504 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4074 event pairs, 14 based on Foata normal form. 8/714 useless extension candidates. Maximal degree in co-relation 5925. Up to 339 conditions per place. [2023-11-06 22:54:16,082 INFO L140 encePairwiseOnDemand]: 197/208 looper letters, 126 selfloop transitions, 117 changer transitions 24/267 dead transitions. [2023-11-06 22:54:16,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 267 transitions, 4917 flow [2023-11-06 22:54:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:54:16,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:54:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1206 transitions. [2023-11-06 22:54:16,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4141483516483517 [2023-11-06 22:54:16,085 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1206 transitions. [2023-11-06 22:54:16,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1206 transitions. [2023-11-06 22:54:16,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:16,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1206 transitions. [2023-11-06 22:54:16,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 86.14285714285714) internal successors, (1206), 14 states have internal predecessors, (1206), 0 states have call successors, (0), 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 22:54:16,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 208.0) internal successors, (3120), 15 states have internal predecessors, (3120), 0 states have call successors, (0), 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 22:54:16,093 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 208.0) internal successors, (3120), 15 states have internal predecessors, (3120), 0 states have call successors, (0), 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 22:54:16,093 INFO L175 Difference]: Start difference. First operand has 148 places, 204 transitions, 3646 flow. Second operand 14 states and 1206 transitions. [2023-11-06 22:54:16,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 267 transitions, 4917 flow [2023-11-06 22:54:16,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 267 transitions, 4636 flow, removed 21 selfloop flow, removed 12 redundant places. [2023-11-06 22:54:16,164 INFO L231 Difference]: Finished difference. Result has 150 places, 216 transitions, 4038 flow [2023-11-06 22:54:16,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=3394, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4038, PETRI_PLACES=150, PETRI_TRANSITIONS=216} [2023-11-06 22:54:16,166 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 122 predicate places. [2023-11-06 22:54:16,166 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 216 transitions, 4038 flow [2023-11-06 22:54:16,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 81.23076923076923) internal successors, (1056), 13 states have internal predecessors, (1056), 0 states have call successors, (0), 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 22:54:16,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:16,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:16,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-06 22:54:16,167 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:54:16,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:16,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1628360290, now seen corresponding path program 2 times [2023-11-06 22:54:16,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:16,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697522942] [2023-11-06 22:54:16,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:16,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:17,164 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 22:54:17,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:17,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697522942] [2023-11-06 22:54:17,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697522942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:17,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:17,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:54:17,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392790578] [2023-11-06 22:54:17,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:17,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:54:17,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:17,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:54:17,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:54:17,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 208 [2023-11-06 22:54:17,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 216 transitions, 4038 flow. Second operand has 9 states, 9 states have (on average 87.77777777777777) internal successors, (790), 9 states have internal predecessors, (790), 0 states have call successors, (0), 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 22:54:17,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:17,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 208 [2023-11-06 22:54:17,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:17,578 INFO L124 PetriNetUnfolderBase]: 279/627 cut-off events. [2023-11-06 22:54:17,578 INFO L125 PetriNetUnfolderBase]: For 8366/8366 co-relation queries the response was YES. [2023-11-06 22:54:17,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5509 conditions, 627 events. 279/627 cut-off events. For 8366/8366 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3478 event pairs, 21 based on Foata normal form. 8/635 useless extension candidates. Maximal degree in co-relation 5446. Up to 419 conditions per place. [2023-11-06 22:54:17,582 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 0 selfloop transitions, 0 changer transitions 223/223 dead transitions. [2023-11-06 22:54:17,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 223 transitions, 4552 flow [2023-11-06 22:54:17,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:54:17,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:54:17,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 458 transitions. [2023-11-06 22:54:17,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403846153846154 [2023-11-06 22:54:17,584 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 458 transitions. [2023-11-06 22:54:17,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 458 transitions. [2023-11-06 22:54:17,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:17,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 458 transitions. [2023-11-06 22:54:17,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 0 states have call successors, (0), 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 22:54:17,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 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 22:54:17,587 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 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 22:54:17,587 INFO L175 Difference]: Start difference. First operand has 150 places, 216 transitions, 4038 flow. Second operand 5 states and 458 transitions. [2023-11-06 22:54:17,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 223 transitions, 4552 flow [2023-11-06 22:54:17,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 223 transitions, 4255 flow, removed 19 selfloop flow, removed 13 redundant places. [2023-11-06 22:54:17,632 INFO L231 Difference]: Finished difference. Result has 139 places, 0 transitions, 0 flow [2023-11-06 22:54:17,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=3718, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=139, PETRI_TRANSITIONS=0} [2023-11-06 22:54:17,633 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 111 predicate places. [2023-11-06 22:54:17,633 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 0 transitions, 0 flow [2023-11-06 22:54:17,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 87.77777777777777) internal successors, (790), 9 states have internal predecessors, (790), 0 states have call successors, (0), 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 22:54:17,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-11-06 22:54:17,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-06 22:54:17,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-11-06 22:54:17,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-11-06 22:54:17,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-11-06 22:54:17,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-06 22:54:17,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-06 22:54:17,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-06 22:54:17,638 INFO L445 BasicCegarLoop]: Path program histogram: [9, 4, 3, 3, 2, 1, 1, 1, 1, 1] [2023-11-06 22:54:17,644 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:54:17,644 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:54:17,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:54:17 BasicIcfg [2023-11-06 22:54:17,648 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:54:17,649 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:54:17,649 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:54:17,649 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:54:17,649 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:53:24" (3/4) ... [2023-11-06 22:54:17,651 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:54:17,654 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-06 22:54:17,654 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-06 22:54:17,663 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2023-11-06 22:54:17,664 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-06 22:54:17,664 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 22:54:17,665 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:54:17,748 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a79136-3e11-4de1-bb53-af7eed9f8ce7/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:54:17,748 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a79136-3e11-4de1-bb53-af7eed9f8ce7/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:54:17,748 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:54:17,749 INFO L158 Benchmark]: Toolchain (without parser) took 55380.31ms. Allocated memory was 178.3MB in the beginning and 828.4MB in the end (delta: 650.1MB). Free memory was 131.1MB in the beginning and 684.1MB in the end (delta: -553.0MB). Peak memory consumption was 98.7MB. Max. memory is 16.1GB. [2023-11-06 22:54:17,749 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:54:17,750 INFO L158 Benchmark]: CACSL2BoogieTranslator took 763.33ms. Allocated memory is still 178.3MB. Free memory was 130.7MB in the beginning and 102.8MB in the end (delta: 27.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-06 22:54:17,750 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.39ms. Allocated memory is still 178.3MB. Free memory was 102.8MB in the beginning and 99.3MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:54:17,750 INFO L158 Benchmark]: Boogie Preprocessor took 51.85ms. Allocated memory is still 178.3MB. Free memory was 99.3MB in the beginning and 96.6MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:54:17,751 INFO L158 Benchmark]: RCFGBuilder took 1112.13ms. Allocated memory is still 178.3MB. Free memory was 96.6MB in the beginning and 91.9MB in the end (delta: 4.8MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2023-11-06 22:54:17,751 INFO L158 Benchmark]: TraceAbstraction took 53263.70ms. Allocated memory was 178.3MB in the beginning and 828.4MB in the end (delta: 650.1MB). Free memory was 91.2MB in the beginning and 687.3MB in the end (delta: -596.1MB). Peak memory consumption was 53.6MB. Max. memory is 16.1GB. [2023-11-06 22:54:17,751 INFO L158 Benchmark]: Witness Printer took 99.74ms. Allocated memory is still 828.4MB. Free memory was 687.3MB in the beginning and 684.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:54:17,759 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 763.33ms. Allocated memory is still 178.3MB. Free memory was 130.7MB in the beginning and 102.8MB in the end (delta: 27.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.39ms. Allocated memory is still 178.3MB. Free memory was 102.8MB in the beginning and 99.3MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.85ms. Allocated memory is still 178.3MB. Free memory was 99.3MB in the beginning and 96.6MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1112.13ms. Allocated memory is still 178.3MB. Free memory was 96.6MB in the beginning and 91.9MB in the end (delta: 4.8MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. * TraceAbstraction took 53263.70ms. Allocated memory was 178.3MB in the beginning and 828.4MB in the end (delta: 650.1MB). Free memory was 91.2MB in the beginning and 687.3MB in the end (delta: -596.1MB). Peak memory consumption was 53.6MB. Max. memory is 16.1GB. * Witness Printer took 99.74ms. Allocated memory is still 828.4MB. Free memory was 687.3MB in the beginning and 684.1MB 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: 6.9s, 113 PlacesBefore, 28 PlacesAfterwards, 108 TransitionsBefore, 21 TransitionsAfterwards, 1466 CoEnabledTransitionPairs, 7 FixpointIterations, 49 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 98 TotalNumberOfCompositions, 4555 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1468, independent: 1269, independent conditional: 0, independent unconditional: 1269, dependent: 199, dependent conditional: 0, dependent unconditional: 199, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 777, independent: 739, independent conditional: 0, independent unconditional: 739, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1468, independent: 530, independent conditional: 0, independent unconditional: 530, dependent: 161, dependent conditional: 0, dependent unconditional: 161, unknown: 777, unknown conditional: 0, unknown unconditional: 777] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: 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: 19]: 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: 19]: 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 5 procedures, 132 locations, 7 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: 53.1s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 18.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2037 SdHoareTripleChecker+Valid, 9.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1706 mSDsluCounter, 2856 SdHoareTripleChecker+Invalid, 8.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2771 mSDsCounter, 918 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5255 IncrementalHoareTripleChecker+Invalid, 6173 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 918 mSolverCounterUnsat, 85 mSDtfsCounter, 5255 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4548occurred in iteration=20, InterpolantAutomatonStates: 210, 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, 1.2s SatisfiabilityAnalysisTime, 25.3s InterpolantComputationTime, 339 NumberOfCodeBlocks, 339 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 313 ConstructedInterpolants, 0 QuantifiedInterpolants, 5493 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:54:17,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a79136-3e11-4de1-bb53-af7eed9f8ce7/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