./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 9bd2c7ff 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_88c8c06d-5e3f-46b6-befd-145ebbb4763c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c8c06d-5e3f-46b6-befd-145ebbb4763c/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c8c06d-5e3f-46b6-befd-145ebbb4763c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c8c06d-5e3f-46b6-befd-145ebbb4763c/bin/uautomizer-verify-uCwYo4JHxu/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_88c8c06d-5e3f-46b6-befd-145ebbb4763c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c8c06d-5e3f-46b6-befd-145ebbb4763c/bin/uautomizer-verify-uCwYo4JHxu --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-9bd2c7f [2023-11-19 07:39:00,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:39:00,273 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c8c06d-5e3f-46b6-befd-145ebbb4763c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:39:00,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:39:00,279 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:39:00,304 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:39:00,305 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:39:00,306 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:39:00,307 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:39:00,307 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:39:00,308 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:39:00,309 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:39:00,309 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:39:00,310 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:39:00,310 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:39:00,311 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:39:00,311 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:39:00,312 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:39:00,312 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:39:00,313 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:39:00,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:39:00,314 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:39:00,314 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:39:00,315 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:39:00,315 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:39:00,316 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:39:00,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:39:00,317 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:39:00,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:00,318 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:39:00,318 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:39:00,318 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:39:00,319 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:39:00,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:39:00,320 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:39:00,320 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:39:00,321 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:39:00,321 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:39:00,321 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:39:00,322 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_88c8c06d-5e3f-46b6-befd-145ebbb4763c/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c8c06d-5e3f-46b6-befd-145ebbb4763c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 473191b5f1326a38296af26dcd2c7f553c42833f82b512e9fb358484309bc769 [2023-11-19 07:39:00,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:39:00,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:39:00,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:39:00,625 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:39:00,626 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:39:00,627 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c8c06d-5e3f-46b6-befd-145ebbb4763c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-11-19 07:39:03,755 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:39:04,081 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:39:04,083 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c8c06d-5e3f-46b6-befd-145ebbb4763c/sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-11-19 07:39:04,101 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c8c06d-5e3f-46b6-befd-145ebbb4763c/bin/uautomizer-verify-uCwYo4JHxu/data/923bb0071/1cb8a5d711b54c868d732af0a7197459/FLAGb05844b0f [2023-11-19 07:39:04,117 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c8c06d-5e3f-46b6-befd-145ebbb4763c/bin/uautomizer-verify-uCwYo4JHxu/data/923bb0071/1cb8a5d711b54c868d732af0a7197459 [2023-11-19 07:39:04,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:39:04,122 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:39:04,124 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:04,124 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:39:04,133 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:39:04,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a8a11d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04, skipping insertion in model container [2023-11-19 07:39:04,135 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,193 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:04,377 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_88c8c06d-5e3f-46b6-befd-145ebbb4763c/sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2023-11-19 07:39:04,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:04,704 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:39:04,717 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_88c8c06d-5e3f-46b6-befd-145ebbb4763c/sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2023-11-19 07:39:04,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:04,833 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:39:04,834 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:39:04,842 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:39:04,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04 WrapperNode [2023-11-19 07:39:04,843 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:04,844 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:04,844 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:39:04,844 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:39:04,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,893 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,933 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 166 [2023-11-19 07:39:04,934 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:04,934 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:39:04,935 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:39:04,935 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:39:04,957 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,964 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,964 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,975 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,977 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,980 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,983 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,988 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:39:05,005 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:39:05,005 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:39:05,006 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:39:05,006 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:05,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:05,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c8c06d-5e3f-46b6-befd-145ebbb4763c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:05,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c8c06d-5e3f-46b6-befd-145ebbb4763c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:39:05,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c8c06d-5e3f-46b6-befd-145ebbb4763c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:39:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:39:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:39:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:39:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:39:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:39:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:39:05,097 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:39:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:39:05,097 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:39:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:39:05,098 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:39:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:39:05,098 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:39:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:39:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:39:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:39:05,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:39:05,100 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:39:05,247 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:39:05,249 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:39:05,648 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:39:05,817 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:39:05,817 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:39:05,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:05 BoogieIcfgContainer [2023-11-19 07:39:05,822 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:39:05,825 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:39:05,825 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:39:05,828 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:39:05,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:39:04" (1/3) ... [2023-11-19 07:39:05,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c52a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:05, skipping insertion in model container [2023-11-19 07:39:05,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (2/3) ... [2023-11-19 07:39:05,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c52a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:05, skipping insertion in model container [2023-11-19 07:39:05,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:05" (3/3) ... [2023-11-19 07:39:05,833 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-11-19 07:39:05,847 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:39:05,856 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:39:05,856 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:39:05,856 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:39:05,953 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:39:06,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 134 transitions, 284 flow [2023-11-19 07:39:06,112 INFO L124 PetriNetUnfolderBase]: 2/130 cut-off events. [2023-11-19 07:39:06,112 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:06,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 130 events. 2/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-19 07:39:06,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 134 transitions, 284 flow [2023-11-19 07:39:06,126 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 130 transitions, 272 flow [2023-11-19 07:39:06,130 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:39:06,141 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 130 transitions, 272 flow [2023-11-19 07:39:06,144 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 130 transitions, 272 flow [2023-11-19 07:39:06,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 130 transitions, 272 flow [2023-11-19 07:39:06,182 INFO L124 PetriNetUnfolderBase]: 2/130 cut-off events. [2023-11-19 07:39:06,182 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:06,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 130 events. 2/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-19 07:39:06,187 INFO L119 LiptonReduction]: Number of co-enabled transitions 3472 [2023-11-19 07:39:11,848 INFO L134 LiptonReduction]: Checked pairs total: 7866 [2023-11-19 07:39:11,848 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-11-19 07:39:11,867 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:39:11,876 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;@5de7dd66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:39:11,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 07:39:11,884 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:39:11,884 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-11-19 07:39:11,884 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:11,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:11,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:11,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:39:11,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:11,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1724311166, now seen corresponding path program 1 times [2023-11-19 07:39:11,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:11,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163951669] [2023-11-19 07:39:11,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:11,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:12,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:12,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163951669] [2023-11-19 07:39:12,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163951669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:12,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:12,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:39:12,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998137000] [2023-11-19 07:39:12,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:12,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:12,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:12,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:12,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:12,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 246 [2023-11-19 07:39:12,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:12,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:12,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 246 [2023-11-19 07:39:12,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:13,794 INFO L124 PetriNetUnfolderBase]: 3415/5281 cut-off events. [2023-11-19 07:39:13,795 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-19 07:39:13,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10109 conditions, 5281 events. 3415/5281 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 30788 event pairs, 823 based on Foata normal form. 0/5076 useless extension candidates. Maximal degree in co-relation 10097. Up to 3457 conditions per place. [2023-11-19 07:39:13,854 INFO L140 encePairwiseOnDemand]: 242/246 looper letters, 33 selfloop transitions, 2 changer transitions 2/41 dead transitions. [2023-11-19 07:39:13,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 168 flow [2023-11-19 07:39:13,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:13,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:13,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-11-19 07:39:13,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5420054200542005 [2023-11-19 07:39:13,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-11-19 07:39:13,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-11-19 07:39:13,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:13,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-11-19 07:39:13,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:13,902 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) [2023-11-19 07:39:13,904 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) [2023-11-19 07:39:13,906 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 72 flow. Second operand 3 states and 400 transitions. [2023-11-19 07:39:13,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 168 flow [2023-11-19 07:39:13,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 164 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:39:13,917 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 66 flow [2023-11-19 07:39:13,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-11-19 07:39:13,929 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-11-19 07:39:13,929 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 66 flow [2023-11-19 07:39:13,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:13,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:13,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:13,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:39:13,931 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)] === [2023-11-19 07:39:13,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:13,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1143936100, now seen corresponding path program 1 times [2023-11-19 07:39:13,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:13,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129551696] [2023-11-19 07:39:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:13,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:14,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:14,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129551696] [2023-11-19 07:39:14,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129551696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:14,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:14,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:39:14,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301765076] [2023-11-19 07:39:14,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:14,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:39:14,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:14,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:39:14,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:39:14,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 246 [2023-11-19 07:39:14,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:14,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:14,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 246 [2023-11-19 07:39:14,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:17,544 INFO L124 PetriNetUnfolderBase]: 10353/14730 cut-off events. [2023-11-19 07:39:17,545 INFO L125 PetriNetUnfolderBase]: For 592/592 co-relation queries the response was YES. [2023-11-19 07:39:17,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29890 conditions, 14730 events. 10353/14730 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 85026 event pairs, 723 based on Foata normal form. 640/15370 useless extension candidates. Maximal degree in co-relation 29880. Up to 7873 conditions per place. [2023-11-19 07:39:17,675 INFO L140 encePairwiseOnDemand]: 233/246 looper letters, 49 selfloop transitions, 13 changer transitions 41/104 dead transitions. [2023-11-19 07:39:17,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 104 transitions, 442 flow [2023-11-19 07:39:17,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:39:17,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:39:17,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 841 transitions. [2023-11-19 07:39:17,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883855981416957 [2023-11-19 07:39:17,681 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 841 transitions. [2023-11-19 07:39:17,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 841 transitions. [2023-11-19 07:39:17,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:17,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 841 transitions. [2023-11-19 07:39:17,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.14285714285714) internal successors, (841), 7 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:17,696 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) [2023-11-19 07:39:17,698 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) [2023-11-19 07:39:17,698 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 66 flow. Second operand 7 states and 841 transitions. [2023-11-19 07:39:17,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 104 transitions, 442 flow [2023-11-19 07:39:17,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 104 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:39:17,708 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 182 flow [2023-11-19 07:39:17,714 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=182, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-11-19 07:39:17,715 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-11-19 07:39:17,715 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 182 flow [2023-11-19 07:39:17,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:17,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:17,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:17,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:39:17,717 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)] === [2023-11-19 07:39:17,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:17,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1102299510, now seen corresponding path program 1 times [2023-11-19 07:39:17,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:17,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314724813] [2023-11-19 07:39:17,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:17,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:18,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:18,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314724813] [2023-11-19 07:39:18,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314724813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:18,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:18,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:39:18,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203212472] [2023-11-19 07:39:18,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:18,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:39:18,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:18,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:39:18,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:39:18,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 246 [2023-11-19 07:39:18,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 182 flow. Second operand has 5 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:18,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:18,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 246 [2023-11-19 07:39:18,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:20,596 INFO L124 PetriNetUnfolderBase]: 9019/12612 cut-off events. [2023-11-19 07:39:20,596 INFO L125 PetriNetUnfolderBase]: For 13248/13248 co-relation queries the response was YES. [2023-11-19 07:39:20,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39540 conditions, 12612 events. 9019/12612 cut-off events. For 13248/13248 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66427 event pairs, 1807 based on Foata normal form. 576/13180 useless extension candidates. Maximal degree in co-relation 39524. Up to 5509 conditions per place. [2023-11-19 07:39:20,759 INFO L140 encePairwiseOnDemand]: 234/246 looper letters, 53 selfloop transitions, 18 changer transitions 43/115 dead transitions. [2023-11-19 07:39:20,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 115 transitions, 752 flow [2023-11-19 07:39:20,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:39:20,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:39:20,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 826 transitions. [2023-11-19 07:39:20,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2023-11-19 07:39:20,767 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 826 transitions. [2023-11-19 07:39:20,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 826 transitions. [2023-11-19 07:39:20,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:20,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 826 transitions. [2023-11-19 07:39:20,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:20,777 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) [2023-11-19 07:39:20,780 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) [2023-11-19 07:39:20,780 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 182 flow. Second operand 7 states and 826 transitions. [2023-11-19 07:39:20,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 115 transitions, 752 flow [2023-11-19 07:39:20,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 115 transitions, 748 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-19 07:39:20,808 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 372 flow [2023-11-19 07:39:20,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=372, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2023-11-19 07:39:20,810 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2023-11-19 07:39:20,815 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 372 flow [2023-11-19 07:39:20,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:20,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:20,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:20,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:39:20,819 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)] === [2023-11-19 07:39:20,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:20,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1475927240, now seen corresponding path program 1 times [2023-11-19 07:39:20,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:20,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296383405] [2023-11-19 07:39:20,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:20,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:21,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:21,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:21,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296383405] [2023-11-19 07:39:21,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296383405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:21,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:21,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:39:21,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346056377] [2023-11-19 07:39:21,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:21,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:39:21,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:21,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:39:21,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:39:21,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 246 [2023-11-19 07:39:21,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 372 flow. Second operand has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:21,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:21,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 246 [2023-11-19 07:39:21,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:24,018 INFO L124 PetriNetUnfolderBase]: 8210/11557 cut-off events. [2023-11-19 07:39:24,018 INFO L125 PetriNetUnfolderBase]: For 29447/29459 co-relation queries the response was YES. [2023-11-19 07:39:24,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44155 conditions, 11557 events. 8210/11557 cut-off events. For 29447/29459 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 61753 event pairs, 1303 based on Foata normal form. 326/11881 useless extension candidates. Maximal degree in co-relation 44132. Up to 6657 conditions per place. [2023-11-19 07:39:24,310 INFO L140 encePairwiseOnDemand]: 233/246 looper letters, 55 selfloop transitions, 36 changer transitions 31/123 dead transitions. [2023-11-19 07:39:24,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 123 transitions, 1006 flow [2023-11-19 07:39:24,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:39:24,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:39:24,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 835 transitions. [2023-11-19 07:39:24,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849012775842044 [2023-11-19 07:39:24,315 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 835 transitions. [2023-11-19 07:39:24,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 835 transitions. [2023-11-19 07:39:24,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:24,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 835 transitions. [2023-11-19 07:39:24,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.28571428571429) internal successors, (835), 7 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:24,325 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) [2023-11-19 07:39:24,326 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) [2023-11-19 07:39:24,326 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 372 flow. Second operand 7 states and 835 transitions. [2023-11-19 07:39:24,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 123 transitions, 1006 flow [2023-11-19 07:39:24,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 123 transitions, 989 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-19 07:39:24,418 INFO L231 Difference]: Finished difference. Result has 63 places, 64 transitions, 628 flow [2023-11-19 07:39:24,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=628, PETRI_PLACES=63, PETRI_TRANSITIONS=64} [2023-11-19 07:39:24,420 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-11-19 07:39:24,420 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 64 transitions, 628 flow [2023-11-19 07:39:24,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:24,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:24,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:24,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:39:24,421 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)] === [2023-11-19 07:39:24,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:24,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1474890080, now seen corresponding path program 1 times [2023-11-19 07:39:24,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:24,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827335119] [2023-11-19 07:39:24,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:24,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:24,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:24,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:24,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827335119] [2023-11-19 07:39:24,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827335119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:24,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:24,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:39:24,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969860082] [2023-11-19 07:39:24,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:24,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:39:24,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:24,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:39:24,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:39:25,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 246 [2023-11-19 07:39:25,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 64 transitions, 628 flow. Second operand has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:25,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:25,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 246 [2023-11-19 07:39:25,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:27,724 INFO L124 PetriNetUnfolderBase]: 10113/14332 cut-off events. [2023-11-19 07:39:27,724 INFO L125 PetriNetUnfolderBase]: For 59032/59032 co-relation queries the response was YES. [2023-11-19 07:39:27,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61983 conditions, 14332 events. 10113/14332 cut-off events. For 59032/59032 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 79911 event pairs, 1955 based on Foata normal form. 336/14668 useless extension candidates. Maximal degree in co-relation 61954. Up to 5959 conditions per place. [2023-11-19 07:39:27,844 INFO L140 encePairwiseOnDemand]: 233/246 looper letters, 63 selfloop transitions, 41 changer transitions 33/138 dead transitions. [2023-11-19 07:39:27,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 138 transitions, 1418 flow [2023-11-19 07:39:27,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:39:27,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:39:27,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 831 transitions. [2023-11-19 07:39:27,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48257839721254353 [2023-11-19 07:39:27,849 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 831 transitions. [2023-11-19 07:39:27,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 831 transitions. [2023-11-19 07:39:27,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:27,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 831 transitions. [2023-11-19 07:39:27,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:27,856 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) [2023-11-19 07:39:27,857 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) [2023-11-19 07:39:27,857 INFO L175 Difference]: Start difference. First operand has 63 places, 64 transitions, 628 flow. Second operand 7 states and 831 transitions. [2023-11-19 07:39:27,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 138 transitions, 1418 flow [2023-11-19 07:39:28,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 138 transitions, 1376 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-11-19 07:39:28,013 INFO L231 Difference]: Finished difference. Result has 67 places, 77 transitions, 965 flow [2023-11-19 07:39:28,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=965, PETRI_PLACES=67, PETRI_TRANSITIONS=77} [2023-11-19 07:39:28,016 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2023-11-19 07:39:28,016 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 77 transitions, 965 flow [2023-11-19 07:39:28,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:28,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:28,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:28,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:39:28,018 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)] === [2023-11-19 07:39:28,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:28,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1212044944, now seen corresponding path program 1 times [2023-11-19 07:39:28,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:28,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286579882] [2023-11-19 07:39:28,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:28,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:28,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:28,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286579882] [2023-11-19 07:39:28,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286579882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:28,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:28,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:39:28,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253593808] [2023-11-19 07:39:28,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:28,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:39:28,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:28,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:39:28,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:39:28,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 246 [2023-11-19 07:39:28,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 77 transitions, 965 flow. Second operand has 6 states, 6 states have (on average 116.5) internal successors, (699), 6 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:28,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:28,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 246 [2023-11-19 07:39:28,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:31,156 INFO L124 PetriNetUnfolderBase]: 10824/15918 cut-off events. [2023-11-19 07:39:31,156 INFO L125 PetriNetUnfolderBase]: For 95771/96384 co-relation queries the response was YES. [2023-11-19 07:39:31,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73855 conditions, 15918 events. 10824/15918 cut-off events. For 95771/96384 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 95347 event pairs, 3155 based on Foata normal form. 1025/16762 useless extension candidates. Maximal degree in co-relation 73823. Up to 11287 conditions per place. [2023-11-19 07:39:31,335 INFO L140 encePairwiseOnDemand]: 239/246 looper letters, 93 selfloop transitions, 17 changer transitions 30/160 dead transitions. [2023-11-19 07:39:31,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 160 transitions, 2153 flow [2023-11-19 07:39:31,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:39:31,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:39:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 750 transitions. [2023-11-19 07:39:31,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508130081300813 [2023-11-19 07:39:31,340 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 750 transitions. [2023-11-19 07:39:31,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 750 transitions. [2023-11-19 07:39:31,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:31,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 750 transitions. [2023-11-19 07:39:31,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:31,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:31,347 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:31,347 INFO L175 Difference]: Start difference. First operand has 67 places, 77 transitions, 965 flow. Second operand 6 states and 750 transitions. [2023-11-19 07:39:31,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 160 transitions, 2153 flow [2023-11-19 07:39:31,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 160 transitions, 2064 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-19 07:39:31,600 INFO L231 Difference]: Finished difference. Result has 71 places, 91 transitions, 1175 flow [2023-11-19 07:39:31,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1175, PETRI_PLACES=71, PETRI_TRANSITIONS=91} [2023-11-19 07:39:31,603 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2023-11-19 07:39:31,603 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 91 transitions, 1175 flow [2023-11-19 07:39:31,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.5) internal successors, (699), 6 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:31,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:31,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:31,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:39:31,604 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)] === [2023-11-19 07:39:31,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:31,605 INFO L85 PathProgramCache]: Analyzing trace with hash 278658292, now seen corresponding path program 2 times [2023-11-19 07:39:31,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:31,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410614386] [2023-11-19 07:39:31,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:31,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:32,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:32,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410614386] [2023-11-19 07:39:32,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410614386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:32,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:32,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:39:32,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099230913] [2023-11-19 07:39:32,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:32,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:39:32,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:32,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:39:32,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:39:32,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 246 [2023-11-19 07:39:32,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 91 transitions, 1175 flow. Second operand has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:32,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:32,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 246 [2023-11-19 07:39:32,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:35,072 INFO L124 PetriNetUnfolderBase]: 10422/15366 cut-off events. [2023-11-19 07:39:35,072 INFO L125 PetriNetUnfolderBase]: For 98542/99109 co-relation queries the response was YES. [2023-11-19 07:39:35,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75597 conditions, 15366 events. 10422/15366 cut-off events. For 98542/99109 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 91737 event pairs, 3104 based on Foata normal form. 973/16166 useless extension candidates. Maximal degree in co-relation 75561. Up to 10369 conditions per place. [2023-11-19 07:39:35,238 INFO L140 encePairwiseOnDemand]: 240/246 looper letters, 92 selfloop transitions, 22 changer transitions 31/165 dead transitions. [2023-11-19 07:39:35,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 165 transitions, 2254 flow [2023-11-19 07:39:35,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:39:35,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:39:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 756 transitions. [2023-11-19 07:39:35,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2023-11-19 07:39:35,242 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 756 transitions. [2023-11-19 07:39:35,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 756 transitions. [2023-11-19 07:39:35,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:35,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 756 transitions. [2023-11-19 07:39:35,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.0) internal successors, (756), 6 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:35,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:35,249 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:35,249 INFO L175 Difference]: Start difference. First operand has 71 places, 91 transitions, 1175 flow. Second operand 6 states and 756 transitions. [2023-11-19 07:39:35,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 165 transitions, 2254 flow [2023-11-19 07:39:35,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 165 transitions, 2252 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:39:35,490 INFO L231 Difference]: Finished difference. Result has 77 places, 98 transitions, 1361 flow [2023-11-19 07:39:35,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1361, PETRI_PLACES=77, PETRI_TRANSITIONS=98} [2023-11-19 07:39:35,492 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2023-11-19 07:39:35,492 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 98 transitions, 1361 flow [2023-11-19 07:39:35,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:35,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:35,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:35,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:39:35,494 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)] === [2023-11-19 07:39:35,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:35,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1222888686, now seen corresponding path program 1 times [2023-11-19 07:39:35,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:35,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170271940] [2023-11-19 07:39:35,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:35,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:36,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:36,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:36,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170271940] [2023-11-19 07:39:36,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170271940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:36,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:36,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:39:36,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077427781] [2023-11-19 07:39:36,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:36,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:39:36,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:36,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:39:36,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:39:36,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 246 [2023-11-19 07:39:36,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 98 transitions, 1361 flow. Second operand has 7 states, 7 states have (on average 117.28571428571429) internal successors, (821), 7 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:36,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:36,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 246 [2023-11-19 07:39:36,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:39,204 INFO L124 PetriNetUnfolderBase]: 11973/17565 cut-off events. [2023-11-19 07:39:39,204 INFO L125 PetriNetUnfolderBase]: For 134970/136053 co-relation queries the response was YES. [2023-11-19 07:39:39,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92634 conditions, 17565 events. 11973/17565 cut-off events. For 134970/136053 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 107361 event pairs, 2196 based on Foata normal form. 1016/18257 useless extension candidates. Maximal degree in co-relation 92593. Up to 8667 conditions per place. [2023-11-19 07:39:39,354 INFO L140 encePairwiseOnDemand]: 238/246 looper letters, 112 selfloop transitions, 41 changer transitions 44/217 dead transitions. [2023-11-19 07:39:39,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 217 transitions, 3128 flow [2023-11-19 07:39:39,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:39:39,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:39:39,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1008 transitions. [2023-11-19 07:39:39,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2023-11-19 07:39:39,359 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1008 transitions. [2023-11-19 07:39:39,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1008 transitions. [2023-11-19 07:39:39,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:39,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1008 transitions. [2023-11-19 07:39:39,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 126.0) internal successors, (1008), 8 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:39,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 246.0) internal successors, (2214), 9 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:39,369 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 246.0) internal successors, (2214), 9 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:39,370 INFO L175 Difference]: Start difference. First operand has 77 places, 98 transitions, 1361 flow. Second operand 8 states and 1008 transitions. [2023-11-19 07:39:39,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 217 transitions, 3128 flow [2023-11-19 07:39:39,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 217 transitions, 3050 flow, removed 39 selfloop flow, removed 2 redundant places. [2023-11-19 07:39:39,726 INFO L231 Difference]: Finished difference. Result has 85 places, 118 transitions, 1785 flow [2023-11-19 07:39:39,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1785, PETRI_PLACES=85, PETRI_TRANSITIONS=118} [2023-11-19 07:39:39,727 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 43 predicate places. [2023-11-19 07:39:39,727 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 118 transitions, 1785 flow [2023-11-19 07:39:39,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.28571428571429) internal successors, (821), 7 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:39,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:39,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:39,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:39:39,728 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)] === [2023-11-19 07:39:39,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:39,729 INFO L85 PathProgramCache]: Analyzing trace with hash -748347437, now seen corresponding path program 1 times [2023-11-19 07:39:39,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:39,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337045540] [2023-11-19 07:39:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:39,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:40,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:40,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337045540] [2023-11-19 07:39:40,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337045540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:40,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:40,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:39:40,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085711773] [2023-11-19 07:39:40,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:40,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:39:40,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:40,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:39:40,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:39:40,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 246 [2023-11-19 07:39:40,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 118 transitions, 1785 flow. Second operand has 8 states, 8 states have (on average 118.125) internal successors, (945), 8 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:40,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:40,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 246 [2023-11-19 07:39:40,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:43,917 INFO L124 PetriNetUnfolderBase]: 12491/18460 cut-off events. [2023-11-19 07:39:43,918 INFO L125 PetriNetUnfolderBase]: For 152998/154196 co-relation queries the response was YES. [2023-11-19 07:39:44,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101912 conditions, 18460 events. 12491/18460 cut-off events. For 152998/154196 co-relation queries the response was YES. Maximal size of possible extension queue 928. Compared 116200 event pairs, 2438 based on Foata normal form. 795/18781 useless extension candidates. Maximal degree in co-relation 101866. Up to 8303 conditions per place. [2023-11-19 07:39:44,104 INFO L140 encePairwiseOnDemand]: 238/246 looper letters, 125 selfloop transitions, 39 changer transitions 30/214 dead transitions. [2023-11-19 07:39:44,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 214 transitions, 3236 flow [2023-11-19 07:39:44,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:39:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:39:44,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1013 transitions. [2023-11-19 07:39:44,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147357723577236 [2023-11-19 07:39:44,111 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1013 transitions. [2023-11-19 07:39:44,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1013 transitions. [2023-11-19 07:39:44,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:44,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1013 transitions. [2023-11-19 07:39:44,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 126.625) internal successors, (1013), 8 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:44,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 246.0) internal successors, (2214), 9 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:44,123 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 246.0) internal successors, (2214), 9 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:44,123 INFO L175 Difference]: Start difference. First operand has 85 places, 118 transitions, 1785 flow. Second operand 8 states and 1013 transitions. [2023-11-19 07:39:44,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 214 transitions, 3236 flow [2023-11-19 07:39:44,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 214 transitions, 3192 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-11-19 07:39:44,758 INFO L231 Difference]: Finished difference. Result has 92 places, 125 transitions, 2002 flow [2023-11-19 07:39:44,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2002, PETRI_PLACES=92, PETRI_TRANSITIONS=125} [2023-11-19 07:39:44,759 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2023-11-19 07:39:44,759 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 125 transitions, 2002 flow [2023-11-19 07:39:44,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 118.125) internal successors, (945), 8 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:44,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:44,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:44,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:39:44,761 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)] === [2023-11-19 07:39:44,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:44,761 INFO L85 PathProgramCache]: Analyzing trace with hash -101748197, now seen corresponding path program 2 times [2023-11-19 07:39:44,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:44,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291568589] [2023-11-19 07:39:44,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:44,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:45,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:45,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291568589] [2023-11-19 07:39:45,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291568589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:45,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:45,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:39:45,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089609914] [2023-11-19 07:39:45,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:45,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:39:45,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:45,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:39:45,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:39:45,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 246 [2023-11-19 07:39:45,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 125 transitions, 2002 flow. Second operand has 8 states, 8 states have (on average 104.25) internal successors, (834), 8 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:45,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:45,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 246 [2023-11-19 07:39:45,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand