./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d91bf-3edd-43fb-b746-5e661572f507/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d91bf-3edd-43fb-b746-5e661572f507/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d91bf-3edd-43fb-b746-5e661572f507/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d91bf-3edd-43fb-b746-5e661572f507/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d91bf-3edd-43fb-b746-5e661572f507/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d91bf-3edd-43fb-b746-5e661572f507/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 473191b5f1326a38296af26dcd2c7f553c42833f82b512e9fb358484309bc769 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:06:51,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:06:51,528 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d91bf-3edd-43fb-b746-5e661572f507/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:06:51,534 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:06:51,535 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:06:51,566 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:06:51,567 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:06:51,567 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:06:51,569 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:06:51,569 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:06:51,570 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:06:51,571 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:06:51,572 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:06:51,573 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:06:51,574 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:06:51,574 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:06:51,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:06:51,576 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:06:51,576 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:06:51,577 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:06:51,577 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:06:51,578 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:06:51,579 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:06:51,580 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:06:51,580 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:06:51,581 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:06:51,582 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:06:51,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:06:51,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:51,584 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:06:51,584 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:06:51,585 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:06:51,586 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:06:51,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:06:51,587 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:06:51,588 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:06:51,588 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:06:51,589 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:06:51,590 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:06:51,590 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_fc2d91bf-3edd-43fb-b746-5e661572f507/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d91bf-3edd-43fb-b746-5e661572f507/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 473191b5f1326a38296af26dcd2c7f553c42833f82b512e9fb358484309bc769 [2023-11-12 02:06:51,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:06:51,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:06:51,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:06:51,929 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:06:51,929 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:06:51,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d91bf-3edd-43fb-b746-5e661572f507/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-11-12 02:06:55,210 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:06:55,551 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:06:55,552 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d91bf-3edd-43fb-b746-5e661572f507/sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-11-12 02:06:55,569 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d91bf-3edd-43fb-b746-5e661572f507/bin/uautomizer-verify-uTZkv6EMXl/data/680e46e17/9368223f663945998428e1254d40ced9/FLAGadeab0b59 [2023-11-12 02:06:55,588 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d91bf-3edd-43fb-b746-5e661572f507/bin/uautomizer-verify-uTZkv6EMXl/data/680e46e17/9368223f663945998428e1254d40ced9 [2023-11-12 02:06:55,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:06:55,593 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:06:55,595 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:55,595 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:06:55,601 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:06:55,602 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:55" (1/1) ... [2023-11-12 02:06:55,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fe203a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:55, skipping insertion in model container [2023-11-12 02:06:55,603 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:55" (1/1) ... [2023-11-12 02:06:55,663 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:06:55,842 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_fc2d91bf-3edd-43fb-b746-5e661572f507/sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2023-11-12 02:06:56,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:56,176 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:06:56,191 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_fc2d91bf-3edd-43fb-b746-5e661572f507/sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2023-11-12 02:06:56,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:56,291 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:56,291 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:56,298 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:06:56,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:56 WrapperNode [2023-11-12 02:06:56,299 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:56,301 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:56,301 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:06:56,301 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:06:56,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:56" (1/1) ... [2023-11-12 02:06:56,327 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:56" (1/1) ... [2023-11-12 02:06:56,366 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 166 [2023-11-12 02:06:56,367 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:56,368 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:06:56,368 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:06:56,368 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:06:56,378 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:56" (1/1) ... [2023-11-12 02:06:56,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:56" (1/1) ... [2023-11-12 02:06:56,384 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:56" (1/1) ... [2023-11-12 02:06:56,384 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:56" (1/1) ... [2023-11-12 02:06:56,399 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:56" (1/1) ... [2023-11-12 02:06:56,403 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:56" (1/1) ... [2023-11-12 02:06:56,406 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:56" (1/1) ... [2023-11-12 02:06:56,409 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:56" (1/1) ... [2023-11-12 02:06:56,414 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:06:56,416 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:06:56,416 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:06:56,416 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:06:56,418 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:56" (1/1) ... [2023-11-12 02:06:56,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:56,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d91bf-3edd-43fb-b746-5e661572f507/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:56,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d91bf-3edd-43fb-b746-5e661572f507/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:06:56,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d91bf-3edd-43fb-b746-5e661572f507/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:06:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:06:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:06:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:06:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:06:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:06:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:06:56,517 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:06:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:06:56,518 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:06:56,518 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:06:56,518 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:06:56,518 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-12 02:06:56,518 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-12 02:06:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:06:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:06:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:06:56,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:06:56,521 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:06:56,713 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:06:56,715 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:06:57,177 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:06:57,449 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:06:57,449 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:06:57,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:57 BoogieIcfgContainer [2023-11-12 02:06:57,456 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:06:57,460 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:06:57,460 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:06:57,464 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:06:57,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:06:55" (1/3) ... [2023-11-12 02:06:57,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ced2053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:57, skipping insertion in model container [2023-11-12 02:06:57,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:56" (2/3) ... [2023-11-12 02:06:57,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ced2053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:57, skipping insertion in model container [2023-11-12 02:06:57,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:57" (3/3) ... [2023-11-12 02:06:57,474 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-11-12 02:06:57,486 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:06:57,498 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:06:57,498 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:06:57,499 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:06:57,579 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:06:57,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 132 transitions, 280 flow [2023-11-12 02:06:57,719 INFO L124 PetriNetUnfolderBase]: 2/128 cut-off events. [2023-11-12 02:06:57,719 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:06:57,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 128 events. 2/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-11-12 02:06:57,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 132 transitions, 280 flow [2023-11-12 02:06:57,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 128 transitions, 268 flow [2023-11-12 02:06:57,741 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:06:57,754 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 128 transitions, 268 flow [2023-11-12 02:06:57,758 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 128 transitions, 268 flow [2023-11-12 02:06:57,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 128 transitions, 268 flow [2023-11-12 02:06:57,808 INFO L124 PetriNetUnfolderBase]: 2/128 cut-off events. [2023-11-12 02:06:57,809 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:06:57,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 128 events. 2/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-11-12 02:06:57,814 INFO L119 LiptonReduction]: Number of co-enabled transitions 3168 [2023-11-12 02:07:05,395 INFO L134 LiptonReduction]: Checked pairs total: 7479 [2023-11-12 02:07:05,395 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-11-12 02:07:05,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:07:05,425 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@129e8fa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:07:05,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-12 02:07:05,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:07:05,434 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-11-12 02:07:05,435 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:07:05,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:05,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:05,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:05,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:05,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1028201449, now seen corresponding path program 1 times [2023-11-12 02:07:05,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:05,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712508415] [2023-11-12 02:07:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:05,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:06,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:06,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712508415] [2023-11-12 02:07:06,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712508415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:06,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:06,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:07:06,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832498796] [2023-11-12 02:07:06,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:06,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:06,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:06,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:06,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:06,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 246 [2023-11-12 02:07:06,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:06,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:06,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 246 [2023-11-12 02:07:06,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:07,370 INFO L124 PetriNetUnfolderBase]: 2594/3796 cut-off events. [2023-11-12 02:07:07,371 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-12 02:07:07,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7491 conditions, 3796 events. 2594/3796 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 20128 event pairs, 518 based on Foata normal form. 0/3603 useless extension candidates. Maximal degree in co-relation 7479. Up to 2797 conditions per place. [2023-11-12 02:07:07,423 INFO L140 encePairwiseOnDemand]: 242/246 looper letters, 30 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2023-11-12 02:07:07,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 156 flow [2023-11-12 02:07:07,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:07,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:07,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-11-12 02:07:07,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5298102981029811 [2023-11-12 02:07:07,443 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-11-12 02:07:07,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-11-12 02:07:07,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:07,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-11-12 02:07:07,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:07,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:07,464 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:07,466 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 70 flow. Second operand 3 states and 391 transitions. [2023-11-12 02:07:07,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 156 flow [2023-11-12 02:07:07,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 152 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:07:07,475 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 64 flow [2023-11-12 02:07:07,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2023-11-12 02:07:07,483 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2023-11-12 02:07:07,483 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 64 flow [2023-11-12 02:07:07,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:07,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:07,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:07,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:07:07,485 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:07,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:07,486 INFO L85 PathProgramCache]: Analyzing trace with hash -259042887, now seen corresponding path program 1 times [2023-11-12 02:07:07,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:07,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932687065] [2023-11-12 02:07:07,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:07,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:08,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:08,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932687065] [2023-11-12 02:07:08,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932687065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:08,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:08,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:08,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993899169] [2023-11-12 02:07:08,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:08,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:08,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:08,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:08,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:07:08,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 246 [2023-11-12 02:07:08,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:08,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:08,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 246 [2023-11-12 02:07:08,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:10,363 INFO L124 PetriNetUnfolderBase]: 7071/10136 cut-off events. [2023-11-12 02:07:10,364 INFO L125 PetriNetUnfolderBase]: For 396/396 co-relation queries the response was YES. [2023-11-12 02:07:10,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20602 conditions, 10136 events. 7071/10136 cut-off events. For 396/396 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 56338 event pairs, 511 based on Foata normal form. 312/10448 useless extension candidates. Maximal degree in co-relation 20592. Up to 6389 conditions per place. [2023-11-12 02:07:10,475 INFO L140 encePairwiseOnDemand]: 234/246 looper letters, 47 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2023-11-12 02:07:10,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 61 transitions, 264 flow [2023-11-12 02:07:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:07:10,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:07:10,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 482 transitions. [2023-11-12 02:07:10,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4898373983739837 [2023-11-12 02:07:10,485 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 482 transitions. [2023-11-12 02:07:10,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 482 transitions. [2023-11-12 02:07:10,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:10,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 482 transitions. [2023-11-12 02:07:10,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:10,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:10,501 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:10,501 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 64 flow. Second operand 4 states and 482 transitions. [2023-11-12 02:07:10,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 61 transitions, 264 flow [2023-11-12 02:07:10,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 61 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:07:10,510 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 160 flow [2023-11-12 02:07:10,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-11-12 02:07:10,519 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2023-11-12 02:07:10,520 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 160 flow [2023-11-12 02:07:10,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:10,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:10,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:10,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:07:10,522 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:10,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:10,524 INFO L85 PathProgramCache]: Analyzing trace with hash 559603891, now seen corresponding path program 1 times [2023-11-12 02:07:10,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:10,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487313833] [2023-11-12 02:07:10,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:10,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:11,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:11,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:11,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487313833] [2023-11-12 02:07:11,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487313833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:11,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:11,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:11,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118669372] [2023-11-12 02:07:11,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:11,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:11,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:11,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:11,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:07:11,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 246 [2023-11-12 02:07:11,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:11,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:11,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 246 [2023-11-12 02:07:11,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:13,204 INFO L124 PetriNetUnfolderBase]: 6695/9328 cut-off events. [2023-11-12 02:07:13,205 INFO L125 PetriNetUnfolderBase]: For 5462/5462 co-relation queries the response was YES. [2023-11-12 02:07:13,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26755 conditions, 9328 events. 6695/9328 cut-off events. For 5462/5462 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 46329 event pairs, 1639 based on Foata normal form. 112/9432 useless extension candidates. Maximal degree in co-relation 26742. Up to 4565 conditions per place. [2023-11-12 02:07:13,307 INFO L140 encePairwiseOnDemand]: 235/246 looper letters, 51 selfloop transitions, 18 changer transitions 0/70 dead transitions. [2023-11-12 02:07:13,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 70 transitions, 424 flow [2023-11-12 02:07:13,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:07:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:07:13,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 471 transitions. [2023-11-12 02:07:13,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47865853658536583 [2023-11-12 02:07:13,311 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 471 transitions. [2023-11-12 02:07:13,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 471 transitions. [2023-11-12 02:07:13,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:13,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 471 transitions. [2023-11-12 02:07:13,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:13,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:13,319 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:13,320 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 160 flow. Second operand 4 states and 471 transitions. [2023-11-12 02:07:13,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 70 transitions, 424 flow [2023-11-12 02:07:13,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 70 transitions, 424 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:07:13,326 INFO L231 Difference]: Finished difference. Result has 47 places, 51 transitions, 328 flow [2023-11-12 02:07:13,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=328, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2023-11-12 02:07:13,327 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2023-11-12 02:07:13,327 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 328 flow [2023-11-12 02:07:13,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:13,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:13,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:13,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:07:13,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:13,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:13,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1010486750, now seen corresponding path program 1 times [2023-11-12 02:07:13,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:13,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437121692] [2023-11-12 02:07:13,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:13,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:13,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:13,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437121692] [2023-11-12 02:07:13,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437121692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:13,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:13,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:13,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912922279] [2023-11-12 02:07:13,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:13,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:13,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:13,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:13,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:07:14,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 246 [2023-11-12 02:07:14,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:14,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:14,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 246 [2023-11-12 02:07:14,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:16,015 INFO L124 PetriNetUnfolderBase]: 6645/9332 cut-off events. [2023-11-12 02:07:16,016 INFO L125 PetriNetUnfolderBase]: For 14817/14827 co-relation queries the response was YES. [2023-11-12 02:07:16,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32620 conditions, 9332 events. 6645/9332 cut-off events. For 14817/14827 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 47978 event pairs, 1035 based on Foata normal form. 24/9354 useless extension candidates. Maximal degree in co-relation 32602. Up to 5851 conditions per place. [2023-11-12 02:07:16,125 INFO L140 encePairwiseOnDemand]: 234/246 looper letters, 53 selfloop transitions, 36 changer transitions 0/90 dead transitions. [2023-11-12 02:07:16,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 90 transitions, 682 flow [2023-11-12 02:07:16,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:07:16,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:07:16,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 485 transitions. [2023-11-12 02:07:16,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928861788617886 [2023-11-12 02:07:16,131 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 485 transitions. [2023-11-12 02:07:16,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 485 transitions. [2023-11-12 02:07:16,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:16,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 485 transitions. [2023-11-12 02:07:16,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:16,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:16,140 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:16,141 INFO L175 Difference]: Start difference. First operand has 47 places, 51 transitions, 328 flow. Second operand 4 states and 485 transitions. [2023-11-12 02:07:16,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 90 transitions, 682 flow [2023-11-12 02:07:16,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 90 transitions, 677 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:07:16,161 INFO L231 Difference]: Finished difference. Result has 52 places, 63 transitions, 568 flow [2023-11-12 02:07:16,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=568, PETRI_PLACES=52, PETRI_TRANSITIONS=63} [2023-11-12 02:07:16,164 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2023-11-12 02:07:16,165 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 63 transitions, 568 flow [2023-11-12 02:07:16,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:16,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:16,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:16,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:07:16,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:16,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:16,167 INFO L85 PathProgramCache]: Analyzing trace with hash 400081300, now seen corresponding path program 1 times [2023-11-12 02:07:16,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:16,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144551523] [2023-11-12 02:07:16,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:16,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:16,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:16,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144551523] [2023-11-12 02:07:16,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144551523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:16,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:16,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:07:16,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489620271] [2023-11-12 02:07:16,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:16,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:16,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:16,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:16,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:07:16,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 246 [2023-11-12 02:07:16,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 63 transitions, 568 flow. Second operand has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:16,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:16,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 246 [2023-11-12 02:07:16,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:19,257 INFO L124 PetriNetUnfolderBase]: 8287/11714 cut-off events. [2023-11-12 02:07:19,257 INFO L125 PetriNetUnfolderBase]: For 36737/36737 co-relation queries the response was YES. [2023-11-12 02:07:19,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47642 conditions, 11714 events. 8287/11714 cut-off events. For 36737/36737 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 63181 event pairs, 1673 based on Foata normal form. 128/11842 useless extension candidates. Maximal degree in co-relation 47620. Up to 5337 conditions per place. [2023-11-12 02:07:19,371 INFO L140 encePairwiseOnDemand]: 234/246 looper letters, 60 selfloop transitions, 41 changer transitions 2/104 dead transitions. [2023-11-12 02:07:19,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 104 transitions, 1034 flow [2023-11-12 02:07:19,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:07:19,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:07:19,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 484 transitions. [2023-11-12 02:07:19,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491869918699187 [2023-11-12 02:07:19,376 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 484 transitions. [2023-11-12 02:07:19,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 484 transitions. [2023-11-12 02:07:19,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:19,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 484 transitions. [2023-11-12 02:07:19,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:19,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:19,385 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:19,385 INFO L175 Difference]: Start difference. First operand has 52 places, 63 transitions, 568 flow. Second operand 4 states and 484 transitions. [2023-11-12 02:07:19,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 104 transitions, 1034 flow [2023-11-12 02:07:19,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 104 transitions, 1032 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-12 02:07:19,418 INFO L231 Difference]: Finished difference. Result has 58 places, 76 transitions, 909 flow [2023-11-12 02:07:19,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=909, PETRI_PLACES=58, PETRI_TRANSITIONS=76} [2023-11-12 02:07:19,421 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2023-11-12 02:07:19,422 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 76 transitions, 909 flow [2023-11-12 02:07:19,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:19,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:19,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:19,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:07:19,423 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:19,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:19,424 INFO L85 PathProgramCache]: Analyzing trace with hash 242333088, now seen corresponding path program 1 times [2023-11-12 02:07:19,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:19,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430084319] [2023-11-12 02:07:19,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:19,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:20,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:20,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430084319] [2023-11-12 02:07:20,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430084319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:20,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:20,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:07:20,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714758522] [2023-11-12 02:07:20,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:20,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:20,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:20,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:20,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:20,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 246 [2023-11-12 02:07:20,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 76 transitions, 909 flow. Second operand has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 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) [2023-11-12 02:07:20,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:20,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 246 [2023-11-12 02:07:20,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:23,338 INFO L124 PetriNetUnfolderBase]: 9147/13325 cut-off events. [2023-11-12 02:07:23,338 INFO L125 PetriNetUnfolderBase]: For 69666/70473 co-relation queries the response was YES. [2023-11-12 02:07:23,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60932 conditions, 13325 events. 9147/13325 cut-off events. For 69666/70473 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 78751 event pairs, 2007 based on Foata normal form. 517/13639 useless extension candidates. Maximal degree in co-relation 60905. Up to 9441 conditions per place. [2023-11-12 02:07:23,510 INFO L140 encePairwiseOnDemand]: 239/246 looper letters, 106 selfloop transitions, 24 changer transitions 1/152 dead transitions. [2023-11-12 02:07:23,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 152 transitions, 2036 flow [2023-11-12 02:07:23,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:07:23,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:07:23,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 620 transitions. [2023-11-12 02:07:23,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040650406504065 [2023-11-12 02:07:23,519 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 620 transitions. [2023-11-12 02:07:23,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 620 transitions. [2023-11-12 02:07:23,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:23,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 620 transitions. [2023-11-12 02:07:23,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:23,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:23,528 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:23,528 INFO L175 Difference]: Start difference. First operand has 58 places, 76 transitions, 909 flow. Second operand 5 states and 620 transitions. [2023-11-12 02:07:23,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 152 transitions, 2036 flow [2023-11-12 02:07:23,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 152 transitions, 1948 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:07:23,643 INFO L231 Difference]: Finished difference. Result has 64 places, 97 transitions, 1222 flow [2023-11-12 02:07:23,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1222, PETRI_PLACES=64, PETRI_TRANSITIONS=97} [2023-11-12 02:07:23,646 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-11-12 02:07:23,647 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 97 transitions, 1222 flow [2023-11-12 02:07:23,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 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) [2023-11-12 02:07:23,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:23,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:23,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:07:23,648 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:23,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:23,649 INFO L85 PathProgramCache]: Analyzing trace with hash 82460190, now seen corresponding path program 2 times [2023-11-12 02:07:23,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:23,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412413065] [2023-11-12 02:07:23,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:23,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:24,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:24,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412413065] [2023-11-12 02:07:24,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412413065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:24,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:24,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:07:24,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920254862] [2023-11-12 02:07:24,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:24,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:24,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:24,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:24,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:24,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 246 [2023-11-12 02:07:24,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 97 transitions, 1222 flow. Second operand has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:24,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:24,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 246 [2023-11-12 02:07:24,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:26,636 INFO L124 PetriNetUnfolderBase]: 8991/13093 cut-off events. [2023-11-12 02:07:26,636 INFO L125 PetriNetUnfolderBase]: For 69856/71086 co-relation queries the response was YES. [2023-11-12 02:07:26,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64892 conditions, 13093 events. 8991/13093 cut-off events. For 69856/71086 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 77308 event pairs, 2320 based on Foata normal form. 883/13774 useless extension candidates. Maximal degree in co-relation 64861. Up to 9551 conditions per place. [2023-11-12 02:07:26,806 INFO L140 encePairwiseOnDemand]: 242/246 looper letters, 95 selfloop transitions, 12 changer transitions 0/128 dead transitions. [2023-11-12 02:07:26,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 128 transitions, 1786 flow [2023-11-12 02:07:26,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:26,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:26,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2023-11-12 02:07:26,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257452574525745 [2023-11-12 02:07:26,811 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2023-11-12 02:07:26,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2023-11-12 02:07:26,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:26,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2023-11-12 02:07:26,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:26,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:26,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:26,819 INFO L175 Difference]: Start difference. First operand has 64 places, 97 transitions, 1222 flow. Second operand 3 states and 388 transitions. [2023-11-12 02:07:26,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 128 transitions, 1786 flow [2023-11-12 02:07:26,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 128 transitions, 1786 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:07:26,970 INFO L231 Difference]: Finished difference. Result has 67 places, 101 transitions, 1316 flow [2023-11-12 02:07:26,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1316, PETRI_PLACES=67, PETRI_TRANSITIONS=101} [2023-11-12 02:07:26,972 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2023-11-12 02:07:26,972 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 101 transitions, 1316 flow [2023-11-12 02:07:26,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:26,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:26,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:26,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:07:26,974 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:26,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:26,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1839309142, now seen corresponding path program 1 times [2023-11-12 02:07:26,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:26,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857232823] [2023-11-12 02:07:26,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:26,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:28,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:28,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:28,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857232823] [2023-11-12 02:07:28,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857232823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:28,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:28,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:07:28,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355094768] [2023-11-12 02:07:28,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:28,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:07:28,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:28,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:07:28,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:07:28,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 246 [2023-11-12 02:07:28,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 101 transitions, 1316 flow. Second operand has 7 states, 7 states have (on average 103.28571428571429) internal successors, (723), 7 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:28,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:28,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 246 [2023-11-12 02:07:28,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:31,391 INFO L124 PetriNetUnfolderBase]: 13027/18268 cut-off events. [2023-11-12 02:07:31,391 INFO L125 PetriNetUnfolderBase]: For 102538/102538 co-relation queries the response was YES. [2023-11-12 02:07:31,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92115 conditions, 18268 events. 13027/18268 cut-off events. For 102538/102538 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 101169 event pairs, 2399 based on Foata normal form. 28/18296 useless extension candidates. Maximal degree in co-relation 92081. Up to 10314 conditions per place. [2023-11-12 02:07:31,609 INFO L140 encePairwiseOnDemand]: 233/246 looper letters, 93 selfloop transitions, 105 changer transitions 21/219 dead transitions. [2023-11-12 02:07:31,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 219 transitions, 3014 flow [2023-11-12 02:07:31,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:07:31,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:07:31,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 800 transitions. [2023-11-12 02:07:31,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645760743321719 [2023-11-12 02:07:31,616 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 800 transitions. [2023-11-12 02:07:31,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 800 transitions. [2023-11-12 02:07:31,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:31,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 800 transitions. [2023-11-12 02:07:31,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:31,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:31,629 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:31,629 INFO L175 Difference]: Start difference. First operand has 67 places, 101 transitions, 1316 flow. Second operand 7 states and 800 transitions. [2023-11-12 02:07:31,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 219 transitions, 3014 flow [2023-11-12 02:07:31,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 219 transitions, 2995 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-12 02:07:31,891 INFO L231 Difference]: Finished difference. Result has 77 places, 160 transitions, 2573 flow [2023-11-12 02:07:31,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2573, PETRI_PLACES=77, PETRI_TRANSITIONS=160} [2023-11-12 02:07:31,892 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 36 predicate places. [2023-11-12 02:07:31,892 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 160 transitions, 2573 flow [2023-11-12 02:07:31,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 103.28571428571429) internal successors, (723), 7 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:31,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:31,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:31,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:07:31,894 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:31,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:31,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1012427360, now seen corresponding path program 2 times [2023-11-12 02:07:31,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:31,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789226932] [2023-11-12 02:07:31,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:31,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:32,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:32,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789226932] [2023-11-12 02:07:32,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789226932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:32,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:32,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:07:32,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049239070] [2023-11-12 02:07:32,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:32,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:07:32,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:32,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:07:32,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:07:32,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 246 [2023-11-12 02:07:32,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 160 transitions, 2573 flow. Second operand has 6 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:32,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:32,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 246 [2023-11-12 02:07:32,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:35,345 INFO L124 PetriNetUnfolderBase]: 10462/15331 cut-off events. [2023-11-12 02:07:35,346 INFO L125 PetriNetUnfolderBase]: For 137507/138746 co-relation queries the response was YES. [2023-11-12 02:07:35,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90460 conditions, 15331 events. 10462/15331 cut-off events. For 137507/138746 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 93257 event pairs, 4048 based on Foata normal form. 867/15929 useless extension candidates. Maximal degree in co-relation 90420. Up to 10409 conditions per place. [2023-11-12 02:07:35,530 INFO L140 encePairwiseOnDemand]: 241/246 looper letters, 109 selfloop transitions, 40 changer transitions 0/184 dead transitions. [2023-11-12 02:07:35,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 184 transitions, 3164 flow [2023-11-12 02:07:35,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:07:35,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:07:35,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 497 transitions. [2023-11-12 02:07:35,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050813008130082 [2023-11-12 02:07:35,537 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 497 transitions. [2023-11-12 02:07:35,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 497 transitions. [2023-11-12 02:07:35,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:35,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 497 transitions. [2023-11-12 02:07:35,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:35,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:35,545 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:35,545 INFO L175 Difference]: Start difference. First operand has 77 places, 160 transitions, 2573 flow. Second operand 4 states and 497 transitions. [2023-11-12 02:07:35,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 184 transitions, 3164 flow [2023-11-12 02:07:35,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 184 transitions, 3131 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-11-12 02:07:35,942 INFO L231 Difference]: Finished difference. Result has 80 places, 165 transitions, 2765 flow [2023-11-12 02:07:35,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2520, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2765, PETRI_PLACES=80, PETRI_TRANSITIONS=165} [2023-11-12 02:07:35,943 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2023-11-12 02:07:35,943 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 165 transitions, 2765 flow [2023-11-12 02:07:35,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:35,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:35,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:35,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:07:35,945 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:35,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:35,946 INFO L85 PathProgramCache]: Analyzing trace with hash 481642611, now seen corresponding path program 1 times [2023-11-12 02:07:35,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:35,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727271734] [2023-11-12 02:07:35,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:35,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:36,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:36,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:36,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727271734] [2023-11-12 02:07:36,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727271734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:36,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:36,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:07:36,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596462039] [2023-11-12 02:07:36,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:36,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:07:36,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:36,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:07:36,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:07:36,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 246 [2023-11-12 02:07:36,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 165 transitions, 2765 flow. Second operand has 7 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:36,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:36,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 246 [2023-11-12 02:07:36,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand