./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix043.oepc.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_c40c45e3-dd48-48bc-8864-9be1ceb4f084/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40c45e3-dd48-48bc-8864-9be1ceb4f084/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_c40c45e3-dd48-48bc-8864-9be1ceb4f084/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40c45e3-dd48-48bc-8864-9be1ceb4f084/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix043.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40c45e3-dd48-48bc-8864-9be1ceb4f084/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_c40c45e3-dd48-48bc-8864-9be1ceb4f084/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 9bfd96daa3950021158d7079dc25a62741fa5d5a7f9e521049c1a78760db50f1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:39:20,686 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:39:20,775 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40c45e3-dd48-48bc-8864-9be1ceb4f084/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:39:20,782 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:39:20,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:39:20,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:39:20,813 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:39:20,814 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:39:20,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:39:20,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:39:20,817 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:39:20,817 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:39:20,818 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:39:20,819 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:39:20,819 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:39:20,820 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:39:20,821 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:39:20,822 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:39:20,822 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:39:20,823 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:39:20,824 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:39:20,829 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:39:20,830 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:39:20,832 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:39:20,832 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:39:20,833 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:39:20,834 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:39:20,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:39:20,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:20,836 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:39:20,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:39:20,837 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:39:20,838 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:39:20,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:39:20,838 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:39:20,839 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:39:20,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:39:20,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:39:20,840 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:39:20,840 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_c40c45e3-dd48-48bc-8864-9be1ceb4f084/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40c45e3-dd48-48bc-8864-9be1ceb4f084/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bfd96daa3950021158d7079dc25a62741fa5d5a7f9e521049c1a78760db50f1 [2023-11-19 07:39:21,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:39:21,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:39:21,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:39:21,216 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:39:21,217 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:39:21,218 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40c45e3-dd48-48bc-8864-9be1ceb4f084/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix043.oepc.i [2023-11-19 07:39:24,361 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:39:24,738 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:39:24,738 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40c45e3-dd48-48bc-8864-9be1ceb4f084/sv-benchmarks/c/pthread-wmm/mix043.oepc.i [2023-11-19 07:39:24,766 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40c45e3-dd48-48bc-8864-9be1ceb4f084/bin/uautomizer-verify-uCwYo4JHxu/data/682e94c71/f393e9129d5f474d89c35407da1870cc/FLAG64b3d6f76 [2023-11-19 07:39:24,780 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40c45e3-dd48-48bc-8864-9be1ceb4f084/bin/uautomizer-verify-uCwYo4JHxu/data/682e94c71/f393e9129d5f474d89c35407da1870cc [2023-11-19 07:39:24,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:39:24,785 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:39:24,789 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:24,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:39:24,798 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:39:24,799 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:24" (1/1) ... [2023-11-19 07:39:24,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a9f9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:24, skipping insertion in model container [2023-11-19 07:39:24,800 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:24" (1/1) ... [2023-11-19 07:39:24,878 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:25,104 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_c40c45e3-dd48-48bc-8864-9be1ceb4f084/sv-benchmarks/c/pthread-wmm/mix043.oepc.i[945,958] [2023-11-19 07:39:25,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:25,436 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:39:25,450 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_c40c45e3-dd48-48bc-8864-9be1ceb4f084/sv-benchmarks/c/pthread-wmm/mix043.oepc.i[945,958] [2023-11-19 07:39:25,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:25,579 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:39:25,579 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:39:25,588 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:39:25,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:25 WrapperNode [2023-11-19 07:39:25,589 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:25,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:25,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:39:25,591 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:39:25,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:25" (1/1) ... [2023-11-19 07:39:25,623 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:25" (1/1) ... [2023-11-19 07:39:25,670 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2023-11-19 07:39:25,671 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:25,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:39:25,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:39:25,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:39:25,683 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:25" (1/1) ... [2023-11-19 07:39:25,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:25" (1/1) ... [2023-11-19 07:39:25,699 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:25" (1/1) ... [2023-11-19 07:39:25,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:25" (1/1) ... [2023-11-19 07:39:25,712 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:25" (1/1) ... [2023-11-19 07:39:25,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:25" (1/1) ... [2023-11-19 07:39:25,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:25" (1/1) ... [2023-11-19 07:39:25,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:25" (1/1) ... [2023-11-19 07:39:25,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:39:25,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:39:25,750 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:39:25,750 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:39:25,751 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:25" (1/1) ... [2023-11-19 07:39:25,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:25,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40c45e3-dd48-48bc-8864-9be1ceb4f084/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:25,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40c45e3-dd48-48bc-8864-9be1ceb4f084/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:39:25,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40c45e3-dd48-48bc-8864-9be1ceb4f084/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:39:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:39:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:39:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:39:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:39:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:39:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:39:25,836 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:39:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:39:25,836 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:39:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:39:25,838 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:39:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:39:25,839 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:39:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:39:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:39:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:39:25,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:39:25,842 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 07:39:26,062 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:39:26,065 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:39:26,486 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:39:26,795 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:39:26,795 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:39:26,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:26 BoogieIcfgContainer [2023-11-19 07:39:26,802 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:39:26,804 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:39:26,804 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:39:26,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:39:26,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:39:24" (1/3) ... [2023-11-19 07:39:26,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c7f7ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:26, skipping insertion in model container [2023-11-19 07:39:26,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:25" (2/3) ... [2023-11-19 07:39:26,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c7f7ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:26, skipping insertion in model container [2023-11-19 07:39:26,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:26" (3/3) ... [2023-11-19 07:39:26,813 INFO L112 eAbstractionObserver]: Analyzing ICFG mix043.oepc.i [2023-11-19 07:39:26,821 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:39:26,831 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:39:26,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:39:26,831 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:39:26,899 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:39:26,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 137 transitions, 290 flow [2023-11-19 07:39:27,014 INFO L124 PetriNetUnfolderBase]: 3/133 cut-off events. [2023-11-19 07:39:27,018 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:27,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 3/133 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. 0/128 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-11-19 07:39:27,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 137 transitions, 290 flow [2023-11-19 07:39:27,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 133 transitions, 278 flow [2023-11-19 07:39:27,042 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:39:27,055 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 133 transitions, 278 flow [2023-11-19 07:39:27,058 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 133 transitions, 278 flow [2023-11-19 07:39:27,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 133 transitions, 278 flow [2023-11-19 07:39:27,124 INFO L124 PetriNetUnfolderBase]: 3/133 cut-off events. [2023-11-19 07:39:27,125 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:27,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 3/133 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. 0/128 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-11-19 07:39:27,130 INFO L119 LiptonReduction]: Number of co-enabled transitions 3676 [2023-11-19 07:39:32,192 INFO L134 LiptonReduction]: Checked pairs total: 9278 [2023-11-19 07:39:32,192 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-11-19 07:39:32,208 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:39:32,216 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;@12507066, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:39:32,216 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 07:39:32,219 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:39:32,220 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:39:32,220 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:32,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:32,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:39:32,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:39:32,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:32,227 INFO L85 PathProgramCache]: Analyzing trace with hash 570223, now seen corresponding path program 1 times [2023-11-19 07:39:32,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:32,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952012716] [2023-11-19 07:39:32,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:32,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:32,706 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 07:39:32,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:32,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952012716] [2023-11-19 07:39:32,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952012716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:32,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:32,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:39:32,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476822626] [2023-11-19 07:39:32,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:32,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:32,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:32,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:32,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:32,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 251 [2023-11-19 07:39:32,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:32,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:32,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 251 [2023-11-19 07:39:32,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:34,540 INFO L124 PetriNetUnfolderBase]: 7063/10161 cut-off events. [2023-11-19 07:39:34,541 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-19 07:39:34,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19873 conditions, 10161 events. 7063/10161 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 60651 event pairs, 1303 based on Foata normal form. 0/9771 useless extension candidates. Maximal degree in co-relation 19861. Up to 7615 conditions per place. [2023-11-19 07:39:34,634 INFO L140 encePairwiseOnDemand]: 247/251 looper letters, 45 selfloop transitions, 2 changer transitions 2/52 dead transitions. [2023-11-19 07:39:34,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 223 flow [2023-11-19 07:39:34,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:34,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:34,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 412 transitions. [2023-11-19 07:39:34,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547144754316069 [2023-11-19 07:39:34,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 412 transitions. [2023-11-19 07:39:34,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 412 transitions. [2023-11-19 07:39:34,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:34,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 412 transitions. [2023-11-19 07:39:34,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states 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 07:39:34,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states 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 07:39:34,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states 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 07:39:34,679 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 76 flow. Second operand 3 states and 412 transitions. [2023-11-19 07:39:34,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 223 flow [2023-11-19 07:39:34,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 216 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:39:34,688 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 70 flow [2023-11-19 07:39:34,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-11-19 07:39:34,758 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-11-19 07:39:34,758 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 70 flow [2023-11-19 07:39:34,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:34,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:34,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:34,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:39:34,759 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:39:34,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:34,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1961414027, now seen corresponding path program 1 times [2023-11-19 07:39:34,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:34,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030518051] [2023-11-19 07:39:34,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:34,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:35,115 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 07:39:35,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:35,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030518051] [2023-11-19 07:39:35,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030518051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:35,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:35,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:39:35,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324137440] [2023-11-19 07:39:35,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:35,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:39:35,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:35,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:39:35,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:39:35,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 251 [2023-11-19 07:39:35,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 07:39:35,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:35,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 251 [2023-11-19 07:39:35,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:39,616 INFO L124 PetriNetUnfolderBase]: 21113/28638 cut-off events. [2023-11-19 07:39:39,616 INFO L125 PetriNetUnfolderBase]: For 1463/1463 co-relation queries the response was YES. [2023-11-19 07:39:39,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59182 conditions, 28638 events. 21113/28638 cut-off events. For 1463/1463 co-relation queries the response was YES. Maximal size of possible extension queue 914. Compared 154471 event pairs, 7084 based on Foata normal form. 1188/29826 useless extension candidates. Maximal degree in co-relation 59172. Up to 16819 conditions per place. [2023-11-19 07:39:39,838 INFO L140 encePairwiseOnDemand]: 242/251 looper letters, 48 selfloop transitions, 7 changer transitions 35/90 dead transitions. [2023-11-19 07:39:39,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 90 transitions, 384 flow [2023-11-19 07:39:39,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:39:39,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:39:39,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 637 transitions. [2023-11-19 07:39:39,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075697211155379 [2023-11-19 07:39:39,842 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 637 transitions. [2023-11-19 07:39:39,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 637 transitions. [2023-11-19 07:39:39,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:39,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 637 transitions. [2023-11-19 07:39:39,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 07:39:39,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states 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 07:39:39,852 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states 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 07:39:39,853 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 70 flow. Second operand 5 states and 637 transitions. [2023-11-19 07:39:39,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 90 transitions, 384 flow [2023-11-19 07:39:39,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 90 transitions, 374 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:39:39,858 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 136 flow [2023-11-19 07:39:39,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-11-19 07:39:39,859 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2023-11-19 07:39:39,860 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 136 flow [2023-11-19 07:39:39,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 07:39:39,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:39,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:39,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:39:39,861 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:39:39,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:39,862 INFO L85 PathProgramCache]: Analyzing trace with hash -674287504, now seen corresponding path program 1 times [2023-11-19 07:39:39,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:39,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895267763] [2023-11-19 07:39:39,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:39,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:40,191 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 07:39:40,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:40,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895267763] [2023-11-19 07:39:40,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895267763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:40,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:40,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:39:40,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066678967] [2023-11-19 07:39:40,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:40,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:39:40,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:40,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:39:40,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:39:40,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 251 [2023-11-19 07:39:40,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 111.6) internal successors, (558), 5 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:40,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:40,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 251 [2023-11-19 07:39:40,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:44,104 INFO L124 PetriNetUnfolderBase]: 18527/25296 cut-off events. [2023-11-19 07:39:44,104 INFO L125 PetriNetUnfolderBase]: For 14415/14415 co-relation queries the response was YES. [2023-11-19 07:39:44,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65824 conditions, 25296 events. 18527/25296 cut-off events. For 14415/14415 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 133743 event pairs, 4132 based on Foata normal form. 1168/26464 useless extension candidates. Maximal degree in co-relation 65810. Up to 10951 conditions per place. [2023-11-19 07:39:44,238 INFO L140 encePairwiseOnDemand]: 243/251 looper letters, 57 selfloop transitions, 7 changer transitions 47/111 dead transitions. [2023-11-19 07:39:44,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 111 transitions, 600 flow [2023-11-19 07:39:44,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:39:44,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:39:44,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 868 transitions. [2023-11-19 07:39:44,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940239043824701 [2023-11-19 07:39:44,244 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 868 transitions. [2023-11-19 07:39:44,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 868 transitions. [2023-11-19 07:39:44,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:44,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 868 transitions. [2023-11-19 07:39:44,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states 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 07:39:44,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 251.0) internal successors, (2008), 8 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states 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 07:39:44,254 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 251.0) internal successors, (2008), 8 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states 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 07:39:44,254 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 136 flow. Second operand 7 states and 868 transitions. [2023-11-19 07:39:44,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 111 transitions, 600 flow [2023-11-19 07:39:44,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 111 transitions, 558 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:39:44,627 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 180 flow [2023-11-19 07:39:44,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=180, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2023-11-19 07:39:44,629 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 10 predicate places. [2023-11-19 07:39:44,634 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 180 flow [2023-11-19 07:39:44,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.6) internal successors, (558), 5 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:44,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:44,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:44,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:39:44,636 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:39:44,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:44,637 INFO L85 PathProgramCache]: Analyzing trace with hash 502240208, now seen corresponding path program 1 times [2023-11-19 07:39:44,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:44,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965745943] [2023-11-19 07:39:44,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:44,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:44,918 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 07:39:44,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:44,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965745943] [2023-11-19 07:39:44,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965745943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:44,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:44,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:39:44,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258208628] [2023-11-19 07:39:44,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:44,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:39:44,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:44,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:39:44,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:39:44,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 251 [2023-11-19 07:39:44,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states 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 07:39:44,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:44,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 251 [2023-11-19 07:39:44,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:47,109 INFO L124 PetriNetUnfolderBase]: 9958/14551 cut-off events. [2023-11-19 07:39:47,109 INFO L125 PetriNetUnfolderBase]: For 12233/12450 co-relation queries the response was YES. [2023-11-19 07:39:47,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37665 conditions, 14551 events. 9958/14551 cut-off events. For 12233/12450 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 87063 event pairs, 1827 based on Foata normal form. 1072/15494 useless extension candidates. Maximal degree in co-relation 37645. Up to 6845 conditions per place. [2023-11-19 07:39:47,234 INFO L140 encePairwiseOnDemand]: 244/251 looper letters, 64 selfloop transitions, 6 changer transitions 0/79 dead transitions. [2023-11-19 07:39:47,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 79 transitions, 468 flow [2023-11-19 07:39:47,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:39:47,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:39:47,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 519 transitions. [2023-11-19 07:39:47,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5169322709163346 [2023-11-19 07:39:47,239 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 519 transitions. [2023-11-19 07:39:47,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 519 transitions. [2023-11-19 07:39:47,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:47,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 519 transitions. [2023-11-19 07:39:47,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states 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 07:39:47,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states 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 07:39:47,247 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states 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 07:39:47,248 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 180 flow. Second operand 4 states and 519 transitions. [2023-11-19 07:39:47,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 79 transitions, 468 flow [2023-11-19 07:39:47,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 79 transitions, 453 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-19 07:39:47,418 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 215 flow [2023-11-19 07:39:47,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=215, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2023-11-19 07:39:47,419 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2023-11-19 07:39:47,419 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 215 flow [2023-11-19 07:39:47,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states 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 07:39:47,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:47,421 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 07:39:47,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:39:47,421 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:39:47,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:47,422 INFO L85 PathProgramCache]: Analyzing trace with hash 827476727, now seen corresponding path program 1 times [2023-11-19 07:39:47,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:47,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169100947] [2023-11-19 07:39:47,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:47,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:47,731 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 07:39:47,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:47,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169100947] [2023-11-19 07:39:47,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169100947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:47,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:47,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:39:47,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988359209] [2023-11-19 07:39:47,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:47,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:39:47,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:47,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:39:47,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:39:47,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 251 [2023-11-19 07:39:47,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 117.4) internal successors, (587), 5 states have internal predecessors, (587), 0 states have call successors, (0), 0 states 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 07:39:47,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:47,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 251 [2023-11-19 07:39:47,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:49,466 INFO L124 PetriNetUnfolderBase]: 7374/11135 cut-off events. [2023-11-19 07:39:49,467 INFO L125 PetriNetUnfolderBase]: For 9092/9210 co-relation queries the response was YES. [2023-11-19 07:39:49,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33639 conditions, 11135 events. 7374/11135 cut-off events. For 9092/9210 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 67919 event pairs, 1662 based on Foata normal form. 642/11657 useless extension candidates. Maximal degree in co-relation 33618. Up to 4141 conditions per place. [2023-11-19 07:39:49,536 INFO L140 encePairwiseOnDemand]: 244/251 looper letters, 82 selfloop transitions, 10 changer transitions 0/101 dead transitions. [2023-11-19 07:39:49,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 101 transitions, 628 flow [2023-11-19 07:39:49,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:39:49,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:39:49,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 652 transitions. [2023-11-19 07:39:49,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5195219123505976 [2023-11-19 07:39:49,542 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 652 transitions. [2023-11-19 07:39:49,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 652 transitions. [2023-11-19 07:39:49,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:49,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 652 transitions. [2023-11-19 07:39:49,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 0 states have call successors, (0), 0 states 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 07:39:49,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states 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 07:39:49,550 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states 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 07:39:49,551 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 215 flow. Second operand 5 states and 652 transitions. [2023-11-19 07:39:49,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 101 transitions, 628 flow [2023-11-19 07:39:49,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 101 transitions, 619 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-19 07:39:49,573 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 274 flow [2023-11-19 07:39:49,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=274, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-11-19 07:39:49,574 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 12 predicate places. [2023-11-19 07:39:49,575 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 274 flow [2023-11-19 07:39:49,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.4) internal successors, (587), 5 states have internal predecessors, (587), 0 states have call successors, (0), 0 states 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 07:39:49,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:49,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:49,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:39:49,576 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:39:49,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:49,577 INFO L85 PathProgramCache]: Analyzing trace with hash 241163985, now seen corresponding path program 1 times [2023-11-19 07:39:49,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:49,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905757248] [2023-11-19 07:39:49,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:49,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:50,473 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 07:39:50,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:50,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905757248] [2023-11-19 07:39:50,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905757248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:50,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:50,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:39:50,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777298361] [2023-11-19 07:39:50,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:50,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:39:50,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:50,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:39:50,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:39:50,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 251 [2023-11-19 07:39:50,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 274 flow. Second operand has 7 states, 7 states have (on average 116.85714285714286) internal successors, (818), 7 states have internal predecessors, (818), 0 states have call successors, (0), 0 states 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 07:39:50,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:50,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 251 [2023-11-19 07:39:50,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:52,607 INFO L124 PetriNetUnfolderBase]: 8703/13304 cut-off events. [2023-11-19 07:39:52,608 INFO L125 PetriNetUnfolderBase]: For 23478/23592 co-relation queries the response was YES. [2023-11-19 07:39:52,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45788 conditions, 13304 events. 8703/13304 cut-off events. For 23478/23592 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 84169 event pairs, 1541 based on Foata normal form. 73/13312 useless extension candidates. Maximal degree in co-relation 45766. Up to 9815 conditions per place. [2023-11-19 07:39:52,716 INFO L140 encePairwiseOnDemand]: 242/251 looper letters, 77 selfloop transitions, 13 changer transitions 41/140 dead transitions. [2023-11-19 07:39:52,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 140 transitions, 957 flow [2023-11-19 07:39:52,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:39:52,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:39:52,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1010 transitions. [2023-11-19 07:39:52,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029880478087649 [2023-11-19 07:39:52,731 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1010 transitions. [2023-11-19 07:39:52,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1010 transitions. [2023-11-19 07:39:52,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:52,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1010 transitions. [2023-11-19 07:39:52,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states 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 07:39:52,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 251.0) internal successors, (2259), 9 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states 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 07:39:52,747 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 251.0) internal successors, (2259), 9 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states 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 07:39:52,747 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 274 flow. Second operand 8 states and 1010 transitions. [2023-11-19 07:39:52,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 140 transitions, 957 flow [2023-11-19 07:39:52,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 140 transitions, 927 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-19 07:39:52,788 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 359 flow [2023-11-19 07:39:52,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=359, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-11-19 07:39:52,792 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 22 predicate places. [2023-11-19 07:39:52,792 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 359 flow [2023-11-19 07:39:52,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.85714285714286) internal successors, (818), 7 states have internal predecessors, (818), 0 states have call successors, (0), 0 states 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 07:39:52,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:52,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:52,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:39:52,794 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:39:52,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:52,795 INFO L85 PathProgramCache]: Analyzing trace with hash -300052263, now seen corresponding path program 2 times [2023-11-19 07:39:52,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:52,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897183957] [2023-11-19 07:39:52,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:52,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:53,244 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 07:39:53,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:53,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897183957] [2023-11-19 07:39:53,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897183957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:53,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:53,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:39:53,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954249660] [2023-11-19 07:39:53,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:53,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:39:53,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:53,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:39:53,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:39:53,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 251 [2023-11-19 07:39:53,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 359 flow. Second operand has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states 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 07:39:53,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:53,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 251 [2023-11-19 07:39:53,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:55,141 INFO L124 PetriNetUnfolderBase]: 6603/9991 cut-off events. [2023-11-19 07:39:55,141 INFO L125 PetriNetUnfolderBase]: For 16750/16874 co-relation queries the response was YES. [2023-11-19 07:39:55,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36669 conditions, 9991 events. 6603/9991 cut-off events. For 16750/16874 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 60972 event pairs, 1134 based on Foata normal form. 216/10087 useless extension candidates. Maximal degree in co-relation 36642. Up to 4105 conditions per place. [2023-11-19 07:39:55,233 INFO L140 encePairwiseOnDemand]: 244/251 looper letters, 112 selfloop transitions, 14 changer transitions 0/135 dead transitions. [2023-11-19 07:39:55,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 135 transitions, 981 flow [2023-11-19 07:39:55,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:39:55,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:39:55,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 783 transitions. [2023-11-19 07:39:55,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5199203187250996 [2023-11-19 07:39:55,239 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 783 transitions. [2023-11-19 07:39:55,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 783 transitions. [2023-11-19 07:39:55,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:55,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 783 transitions. [2023-11-19 07:39:55,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 130.5) internal successors, (783), 6 states have internal predecessors, (783), 0 states have call successors, (0), 0 states 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 07:39:55,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 251.0) internal successors, (1757), 7 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states 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 07:39:55,250 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 251.0) internal successors, (1757), 7 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states 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 07:39:55,250 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 359 flow. Second operand 6 states and 783 transitions. [2023-11-19 07:39:55,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 135 transitions, 981 flow [2023-11-19 07:39:55,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 135 transitions, 967 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-19 07:39:55,318 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 438 flow [2023-11-19 07:39:55,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-11-19 07:39:55,320 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 23 predicate places. [2023-11-19 07:39:55,320 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 438 flow [2023-11-19 07:39:55,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states 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 07:39:55,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:55,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:55,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:39:55,322 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:39:55,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:55,322 INFO L85 PathProgramCache]: Analyzing trace with hash 434232217, now seen corresponding path program 1 times [2023-11-19 07:39:55,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:55,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446119854] [2023-11-19 07:39:55,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:55,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:56,746 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 07:39:56,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:56,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446119854] [2023-11-19 07:39:56,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446119854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:56,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:56,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:39:56,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914896008] [2023-11-19 07:39:56,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:56,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:39:56,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:56,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:39:56,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:39:56,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 251 [2023-11-19 07:39:56,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 438 flow. Second operand has 8 states, 8 states have (on average 116.875) internal successors, (935), 8 states have internal predecessors, (935), 0 states have call successors, (0), 0 states 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 07:39:56,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:56,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 251 [2023-11-19 07:39:56,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:59,601 INFO L124 PetriNetUnfolderBase]: 9910/15404 cut-off events. [2023-11-19 07:39:59,601 INFO L125 PetriNetUnfolderBase]: For 45116/45436 co-relation queries the response was YES. [2023-11-19 07:39:59,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61354 conditions, 15404 events. 9910/15404 cut-off events. For 45116/45436 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 104263 event pairs, 1219 based on Foata normal form. 179/15506 useless extension candidates. Maximal degree in co-relation 61326. Up to 6644 conditions per place. [2023-11-19 07:39:59,715 INFO L140 encePairwiseOnDemand]: 242/251 looper letters, 141 selfloop transitions, 16 changer transitions 64/230 dead transitions. [2023-11-19 07:39:59,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 230 transitions, 2033 flow [2023-11-19 07:39:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:39:59,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:39:59,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1032 transitions. [2023-11-19 07:39:59,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5139442231075697 [2023-11-19 07:39:59,721 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1032 transitions. [2023-11-19 07:39:59,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1032 transitions. [2023-11-19 07:39:59,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:59,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1032 transitions. [2023-11-19 07:39:59,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 07:39:59,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 251.0) internal successors, (2259), 9 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states 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 07:39:59,734 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 251.0) internal successors, (2259), 9 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states 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 07:39:59,734 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 438 flow. Second operand 8 states and 1032 transitions. [2023-11-19 07:39:59,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 230 transitions, 2033 flow [2023-11-19 07:40:00,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 230 transitions, 1871 flow, removed 44 selfloop flow, removed 3 redundant places. [2023-11-19 07:40:00,816 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 544 flow [2023-11-19 07:40:00,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=544, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2023-11-19 07:40:00,817 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 32 predicate places. [2023-11-19 07:40:00,817 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 544 flow [2023-11-19 07:40:00,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.875) internal successors, (935), 8 states have internal predecessors, (935), 0 states have call successors, (0), 0 states 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 07:40:00,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:00,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:00,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:40:00,819 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:40:00,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:00,820 INFO L85 PathProgramCache]: Analyzing trace with hash 722922935, now seen corresponding path program 2 times [2023-11-19 07:40:00,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:00,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344871910] [2023-11-19 07:40:00,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:00,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:01,232 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 07:40:01,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:01,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344871910] [2023-11-19 07:40:01,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344871910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:01,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:01,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:40:01,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52308504] [2023-11-19 07:40:01,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:01,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:40:01,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:01,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:40:01,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:01,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 251 [2023-11-19 07:40:01,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 544 flow. Second operand has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states 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 07:40:01,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:01,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 251 [2023-11-19 07:40:01,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:04,396 INFO L124 PetriNetUnfolderBase]: 14836/22533 cut-off events. [2023-11-19 07:40:04,396 INFO L125 PetriNetUnfolderBase]: For 67255/67923 co-relation queries the response was YES. [2023-11-19 07:40:04,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96020 conditions, 22533 events. 14836/22533 cut-off events. For 67255/67923 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 154938 event pairs, 2586 based on Foata normal form. 182/22622 useless extension candidates. Maximal degree in co-relation 95987. Up to 11021 conditions per place. [2023-11-19 07:40:04,555 INFO L140 encePairwiseOnDemand]: 247/251 looper letters, 117 selfloop transitions, 2 changer transitions 62/187 dead transitions. [2023-11-19 07:40:04,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 187 transitions, 1789 flow [2023-11-19 07:40:04,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:40:04,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:40:04,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 653 transitions. [2023-11-19 07:40:04,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5203187250996016 [2023-11-19 07:40:04,559 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 653 transitions. [2023-11-19 07:40:04,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 653 transitions. [2023-11-19 07:40:04,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:04,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 653 transitions. [2023-11-19 07:40:04,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 0 states have call successors, (0), 0 states 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 07:40:04,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states 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 07:40:04,567 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states 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 07:40:04,567 INFO L175 Difference]: Start difference. First operand has 76 places, 73 transitions, 544 flow. Second operand 5 states and 653 transitions. [2023-11-19 07:40:04,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 187 transitions, 1789 flow [2023-11-19 07:40:06,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 187 transitions, 1717 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-11-19 07:40:06,952 INFO L231 Difference]: Finished difference. Result has 75 places, 74 transitions, 542 flow [2023-11-19 07:40:06,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=542, PETRI_PLACES=75, PETRI_TRANSITIONS=74} [2023-11-19 07:40:06,953 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2023-11-19 07:40:06,954 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 74 transitions, 542 flow [2023-11-19 07:40:06,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states 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 07:40:06,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:06,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:06,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:40:06,955 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:40:06,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:06,956 INFO L85 PathProgramCache]: Analyzing trace with hash -733310632, now seen corresponding path program 1 times [2023-11-19 07:40:06,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:06,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652963200] [2023-11-19 07:40:06,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:06,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:07,908 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 07:40:07,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:07,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652963200] [2023-11-19 07:40:07,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652963200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:07,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:07,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:40:07,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175700165] [2023-11-19 07:40:07,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:07,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:40:07,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:07,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:40:07,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:40:08,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 251 [2023-11-19 07:40:08,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 542 flow. Second operand has 8 states, 8 states have (on average 115.875) internal successors, (927), 8 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 07:40:08,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:08,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 251 [2023-11-19 07:40:08,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand