./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74862c4a-878a-4f09-90ef-abf272756597/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74862c4a-878a-4f09-90ef-abf272756597/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74862c4a-878a-4f09-90ef-abf272756597/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74862c4a-878a-4f09-90ef-abf272756597/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74862c4a-878a-4f09-90ef-abf272756597/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74862c4a-878a-4f09-90ef-abf272756597/bin/uautomizer-verify-4GaUIPS5ZU --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 4fc83f7400faec1e297c0070148ef6e08fc24a46b81d9a9e52a0ee501a0da326 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:13:11,761 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:13:11,879 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74862c4a-878a-4f09-90ef-abf272756597/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:13:11,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:13:11,884 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:13:11,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:13:11,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:13:11,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:13:11,908 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:13:11,908 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:13:11,908 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:13:11,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:13:11,910 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:13:11,910 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:13:11,910 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:13:11,911 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:13:11,911 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:13:11,911 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:13:11,912 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:13:11,912 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:13:11,912 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:13:11,917 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:13:11,917 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:13:11,918 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:13:11,918 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:13:11,918 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:13:11,918 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:13:11,919 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:13:11,919 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:13:11,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:13:11,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:13:11,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:13:11,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:13:11,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:13:11,925 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:13:11,925 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:13:11,925 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:13:11,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:13:11,927 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:13:11,927 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:13:11,928 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:13:11,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:13:11,929 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_74862c4a-878a-4f09-90ef-abf272756597/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74862c4a-878a-4f09-90ef-abf272756597/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fc83f7400faec1e297c0070148ef6e08fc24a46b81d9a9e52a0ee501a0da326 [2024-10-31 22:13:12,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:13:12,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:13:12,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:13:12,313 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:13:12,317 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:13:12,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74862c4a-878a-4f09-90ef-abf272756597/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i Unable to find full path for "g++" [2024-10-31 22:13:14,463 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:13:14,821 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:13:14,822 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74862c4a-878a-4f09-90ef-abf272756597/sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i [2024-10-31 22:13:14,842 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74862c4a-878a-4f09-90ef-abf272756597/bin/uautomizer-verify-4GaUIPS5ZU/data/122f29748/4f28cda5f0444380ba5583db8b69c7b3/FLAG1b2f62241 [2024-10-31 22:13:14,858 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74862c4a-878a-4f09-90ef-abf272756597/bin/uautomizer-verify-4GaUIPS5ZU/data/122f29748/4f28cda5f0444380ba5583db8b69c7b3 [2024-10-31 22:13:14,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:13:14,862 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:13:14,864 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:13:14,864 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:13:14,870 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:13:14,870 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:13:14" (1/1) ... [2024-10-31 22:13:14,872 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f6887a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:14, skipping insertion in model container [2024-10-31 22:13:14,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:13:14" (1/1) ... [2024-10-31 22:13:14,925 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:13:15,136 WARN L251 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_74862c4a-878a-4f09-90ef-abf272756597/sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i[949,962] [2024-10-31 22:13:15,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:13:15,476 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:13:15,491 WARN L251 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_74862c4a-878a-4f09-90ef-abf272756597/sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i[949,962] [2024-10-31 22:13:15,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:13:15,641 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:13:15,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:15 WrapperNode [2024-10-31 22:13:15,643 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:13:15,644 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:13:15,644 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:13:15,645 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:13:15,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:15" (1/1) ... [2024-10-31 22:13:15,679 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:15" (1/1) ... [2024-10-31 22:13:15,727 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 252 [2024-10-31 22:13:15,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:13:15,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:13:15,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:13:15,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:13:15,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:15" (1/1) ... [2024-10-31 22:13:15,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:15" (1/1) ... [2024-10-31 22:13:15,751 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:15" (1/1) ... [2024-10-31 22:13:15,785 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:13:15,786 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:15" (1/1) ... [2024-10-31 22:13:15,786 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:15" (1/1) ... [2024-10-31 22:13:15,799 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:15" (1/1) ... [2024-10-31 22:13:15,804 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:15" (1/1) ... [2024-10-31 22:13:15,806 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:15" (1/1) ... [2024-10-31 22:13:15,812 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:15" (1/1) ... [2024-10-31 22:13:15,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:13:15,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:13:15,820 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:13:15,820 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:13:15,821 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:15" (1/1) ... [2024-10-31 22:13:15,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:13:15,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74862c4a-878a-4f09-90ef-abf272756597/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:15,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74862c4a-878a-4f09-90ef-abf272756597/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:13:15,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74862c4a-878a-4f09-90ef-abf272756597/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:13:15,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:13:15,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:13:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-31 22:13:15,892 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-31 22:13:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-31 22:13:15,892 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-31 22:13:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-31 22:13:15,892 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-31 22:13:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-31 22:13:15,893 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-31 22:13:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:13:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:13:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:13:15,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:13:15,896 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:13:16,140 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:13:16,142 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:13:16,705 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:13:16,706 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:13:17,185 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:13:17,185 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:13:17,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:17 BoogieIcfgContainer [2024-10-31 22:13:17,186 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:13:17,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:13:17,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:13:17,196 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:13:17,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:13:14" (1/3) ... [2024-10-31 22:13:17,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e82ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:13:17, skipping insertion in model container [2024-10-31 22:13:17,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:15" (2/3) ... [2024-10-31 22:13:17,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e82ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:13:17, skipping insertion in model container [2024-10-31 22:13:17,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:17" (3/3) ... [2024-10-31 22:13:17,200 INFO L112 eAbstractionObserver]: Analyzing ICFG mix014_tso.oepc.i [2024-10-31 22:13:17,222 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:13:17,222 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-10-31 22:13:17,222 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:13:17,303 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:13:17,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 51 transitions, 118 flow [2024-10-31 22:13:17,406 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-10-31 22:13:17,407 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:13:17,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2024-10-31 22:13:17,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 51 transitions, 118 flow [2024-10-31 22:13:17,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 47 transitions, 106 flow [2024-10-31 22:13:17,438 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:13:17,449 INFO L333 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, 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;@1afffd92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:13:17,449 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-31 22:13:17,457 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:13:17,457 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-31 22:13:17,457 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:13:17,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:17,458 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:13:17,459 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-10-31 22:13:17,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:17,465 INFO L85 PathProgramCache]: Analyzing trace with hash -143081303, now seen corresponding path program 1 times [2024-10-31 22:13:17,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:17,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242115575] [2024-10-31 22:13:17,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:17,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:18,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:18,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:18,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242115575] [2024-10-31 22:13:18,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242115575] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:18,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:18,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:13:18,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797602311] [2024-10-31 22:13:18,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:18,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:13:18,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:13:18,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:13:18,166 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-10-31 22:13:18,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:18,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:18,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-10-31 22:13:18,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:21,163 INFO L124 PetriNetUnfolderBase]: 5810/8800 cut-off events. [2024-10-31 22:13:21,163 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-10-31 22:13:21,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16953 conditions, 8800 events. 5810/8800 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 59758 event pairs, 1520 based on Foata normal form. 270/8464 useless extension candidates. Maximal degree in co-relation 16941. Up to 6886 conditions per place. [2024-10-31 22:13:21,245 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 43 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-10-31 22:13:21,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 234 flow [2024-10-31 22:13:21,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:13:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:13:21,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-10-31 22:13:21,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7450980392156863 [2024-10-31 22:13:21,261 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 106 flow. Second operand 3 states and 114 transitions. [2024-10-31 22:13:21,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 234 flow [2024-10-31 22:13:21,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 228 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:13:21,270 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 102 flow [2024-10-31 22:13:21,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-10-31 22:13:21,276 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2024-10-31 22:13:21,277 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 102 flow [2024-10-31 22:13:21,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:21,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:21,277 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:21,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:13:21,278 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-10-31 22:13:21,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:21,279 INFO L85 PathProgramCache]: Analyzing trace with hash -62730856, now seen corresponding path program 1 times [2024-10-31 22:13:21,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:21,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857191903] [2024-10-31 22:13:21,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:21,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:21,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:21,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:21,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857191903] [2024-10-31 22:13:21,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857191903] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:21,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:21,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:13:21,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591648375] [2024-10-31 22:13:21,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:21,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:13:21,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:21,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:13:21,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:13:21,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-10-31 22:13:21,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:21,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:21,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-10-31 22:13:21,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:23,554 INFO L124 PetriNetUnfolderBase]: 4577/7273 cut-off events. [2024-10-31 22:13:23,554 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2024-10-31 22:13:23,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14023 conditions, 7273 events. 4577/7273 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 49992 event pairs, 1382 based on Foata normal form. 0/7129 useless extension candidates. Maximal degree in co-relation 14013. Up to 4942 conditions per place. [2024-10-31 22:13:23,605 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 39 selfloop transitions, 2 changer transitions 2/61 dead transitions. [2024-10-31 22:13:23,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 224 flow [2024-10-31 22:13:23,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:13:23,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:13:23,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-10-31 22:13:23,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7189542483660131 [2024-10-31 22:13:23,607 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 102 flow. Second operand 3 states and 110 transitions. [2024-10-31 22:13:23,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 224 flow [2024-10-31 22:13:23,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:13:23,611 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-10-31 22:13:23,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-10-31 22:13:23,612 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2024-10-31 22:13:23,612 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-10-31 22:13:23,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:23,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:23,613 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:23,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:13:23,614 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-10-31 22:13:23,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:23,614 INFO L85 PathProgramCache]: Analyzing trace with hash -909074748, now seen corresponding path program 1 times [2024-10-31 22:13:23,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:23,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921685966] [2024-10-31 22:13:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:23,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:24,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:24,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921685966] [2024-10-31 22:13:24,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921685966] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:24,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:24,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:13:24,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857700575] [2024-10-31 22:13:24,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:24,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:13:24,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:24,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:13:24,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:13:24,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-10-31 22:13:24,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:24,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:24,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-10-31 22:13:24,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:27,973 INFO L124 PetriNetUnfolderBase]: 12655/18765 cut-off events. [2024-10-31 22:13:27,973 INFO L125 PetriNetUnfolderBase]: For 852/852 co-relation queries the response was YES. [2024-10-31 22:13:28,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37147 conditions, 18765 events. 12655/18765 cut-off events. For 852/852 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 130615 event pairs, 1457 based on Foata normal form. 560/18552 useless extension candidates. Maximal degree in co-relation 37137. Up to 10141 conditions per place. [2024-10-31 22:13:28,097 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 59 selfloop transitions, 6 changer transitions 1/79 dead transitions. [2024-10-31 22:13:28,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 79 transitions, 312 flow [2024-10-31 22:13:28,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:13:28,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:13:28,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-10-31 22:13:28,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-31 22:13:28,102 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 4 states and 136 transitions. [2024-10-31 22:13:28,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 79 transitions, 312 flow [2024-10-31 22:13:28,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 79 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:13:28,112 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 136 flow [2024-10-31 22:13:28,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-10-31 22:13:28,113 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2024-10-31 22:13:28,113 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 136 flow [2024-10-31 22:13:28,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:28,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:28,114 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:28,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:13:28,114 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-10-31 22:13:28,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:28,115 INFO L85 PathProgramCache]: Analyzing trace with hash -980997286, now seen corresponding path program 1 times [2024-10-31 22:13:28,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:28,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637712607] [2024-10-31 22:13:28,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:28,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:28,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:28,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637712607] [2024-10-31 22:13:28,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637712607] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:28,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:28,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:13:28,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740793839] [2024-10-31 22:13:28,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:28,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:13:28,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:28,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:13:28,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:13:28,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-10-31 22:13:28,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:28,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:28,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-10-31 22:13:28,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:31,461 INFO L124 PetriNetUnfolderBase]: 9379/13957 cut-off events. [2024-10-31 22:13:31,462 INFO L125 PetriNetUnfolderBase]: For 3222/3222 co-relation queries the response was YES. [2024-10-31 22:13:31,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31521 conditions, 13957 events. 9379/13957 cut-off events. For 3222/3222 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 91877 event pairs, 699 based on Foata normal form. 500/13933 useless extension candidates. Maximal degree in co-relation 31509. Up to 6001 conditions per place. [2024-10-31 22:13:31,550 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 76 selfloop transitions, 10 changer transitions 1/100 dead transitions. [2024-10-31 22:13:31,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 445 flow [2024-10-31 22:13:31,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:13:31,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:13:31,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-10-31 22:13:31,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6823529411764706 [2024-10-31 22:13:31,554 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 136 flow. Second operand 5 states and 174 transitions. [2024-10-31 22:13:31,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 445 flow [2024-10-31 22:13:31,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 100 transitions, 434 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-31 22:13:31,565 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 188 flow [2024-10-31 22:13:31,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-10-31 22:13:31,566 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2024-10-31 22:13:31,567 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 188 flow [2024-10-31 22:13:31,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:31,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:31,568 INFO L204 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, 1] [2024-10-31 22:13:31,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:13:31,569 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-10-31 22:13:31,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:31,569 INFO L85 PathProgramCache]: Analyzing trace with hash 408249146, now seen corresponding path program 1 times [2024-10-31 22:13:31,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:31,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650415136] [2024-10-31 22:13:31,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:31,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:32,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:32,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650415136] [2024-10-31 22:13:32,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650415136] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:32,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:32,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:13:32,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037271345] [2024-10-31 22:13:32,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:32,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:13:32,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:32,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:13:32,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:13:32,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-10-31 22:13:32,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:32,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:32,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-10-31 22:13:32,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:34,244 INFO L124 PetriNetUnfolderBase]: 5879/8641 cut-off events. [2024-10-31 22:13:34,245 INFO L125 PetriNetUnfolderBase]: For 6309/6309 co-relation queries the response was YES. [2024-10-31 22:13:34,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21881 conditions, 8641 events. 5879/8641 cut-off events. For 6309/6309 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 49888 event pairs, 509 based on Foata normal form. 316/8666 useless extension candidates. Maximal degree in co-relation 21867. Up to 2540 conditions per place. [2024-10-31 22:13:34,299 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 91 selfloop transitions, 14 changer transitions 1/119 dead transitions. [2024-10-31 22:13:34,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 119 transitions, 584 flow [2024-10-31 22:13:34,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:13:34,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:13:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 210 transitions. [2024-10-31 22:13:34,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2024-10-31 22:13:34,301 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 188 flow. Second operand 6 states and 210 transitions. [2024-10-31 22:13:34,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 119 transitions, 584 flow [2024-10-31 22:13:34,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 119 transitions, 554 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-31 22:13:34,344 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 238 flow [2024-10-31 22:13:34,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=238, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-10-31 22:13:34,345 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 5 predicate places. [2024-10-31 22:13:34,345 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 238 flow [2024-10-31 22:13:34,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:34,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:34,346 INFO L204 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:34,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:13:34,347 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-10-31 22:13:34,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:34,347 INFO L85 PathProgramCache]: Analyzing trace with hash -992235644, now seen corresponding path program 1 times [2024-10-31 22:13:34,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:34,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944575602] [2024-10-31 22:13:34,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:34,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:35,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:35,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944575602] [2024-10-31 22:13:35,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944575602] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:35,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:35,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:13:35,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203152859] [2024-10-31 22:13:35,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:35,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:13:35,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:35,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:13:35,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:13:35,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-10-31 22:13:35,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 238 flow. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:35,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:35,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-10-31 22:13:35,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:36,636 INFO L124 PetriNetUnfolderBase]: 4163/5953 cut-off events. [2024-10-31 22:13:36,636 INFO L125 PetriNetUnfolderBase]: For 6195/6195 co-relation queries the response was YES. [2024-10-31 22:13:36,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16226 conditions, 5953 events. 4163/5953 cut-off events. For 6195/6195 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 31588 event pairs, 431 based on Foata normal form. 112/5873 useless extension candidates. Maximal degree in co-relation 16211. Up to 1868 conditions per place. [2024-10-31 22:13:36,681 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 80 selfloop transitions, 18 changer transitions 1/112 dead transitions. [2024-10-31 22:13:36,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 112 transitions, 566 flow [2024-10-31 22:13:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:13:36,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:13:36,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-10-31 22:13:36,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6162464985994398 [2024-10-31 22:13:36,685 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 238 flow. Second operand 7 states and 220 transitions. [2024-10-31 22:13:36,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 112 transitions, 566 flow [2024-10-31 22:13:36,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 112 transitions, 520 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-10-31 22:13:36,766 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 248 flow [2024-10-31 22:13:36,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=248, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2024-10-31 22:13:36,767 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2024-10-31 22:13:36,767 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 248 flow [2024-10-31 22:13:36,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:36,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:36,768 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:36,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:13:36,768 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-10-31 22:13:36,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:36,769 INFO L85 PathProgramCache]: Analyzing trace with hash 582311005, now seen corresponding path program 1 times [2024-10-31 22:13:36,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:36,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130432699] [2024-10-31 22:13:36,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:36,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:38,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:38,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130432699] [2024-10-31 22:13:38,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130432699] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:38,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:38,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:13:38,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977787115] [2024-10-31 22:13:38,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:38,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:13:38,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:38,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:13:38,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:13:38,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-10-31 22:13:38,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:38,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:38,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-10-31 22:13:38,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:39,812 INFO L124 PetriNetUnfolderBase]: 5289/8422 cut-off events. [2024-10-31 22:13:39,812 INFO L125 PetriNetUnfolderBase]: For 3702/3926 co-relation queries the response was YES. [2024-10-31 22:13:39,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19460 conditions, 8422 events. 5289/8422 cut-off events. For 3702/3926 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 55546 event pairs, 867 based on Foata normal form. 16/8075 useless extension candidates. Maximal degree in co-relation 19444. Up to 3720 conditions per place. [2024-10-31 22:13:39,873 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 57 selfloop transitions, 2 changer transitions 12/98 dead transitions. [2024-10-31 22:13:39,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 98 transitions, 492 flow [2024-10-31 22:13:39,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:13:39,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:13:39,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-10-31 22:13:39,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-10-31 22:13:39,876 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 248 flow. Second operand 6 states and 186 transitions. [2024-10-31 22:13:39,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 98 transitions, 492 flow [2024-10-31 22:13:39,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 98 transitions, 386 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-10-31 22:13:39,952 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 169 flow [2024-10-31 22:13:39,953 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=169, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-10-31 22:13:39,954 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 7 predicate places. [2024-10-31 22:13:39,954 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 169 flow [2024-10-31 22:13:39,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:39,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:39,955 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:39,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:13:39,955 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-10-31 22:13:39,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:39,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1948559331, now seen corresponding path program 2 times [2024-10-31 22:13:39,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:39,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516748596] [2024-10-31 22:13:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:39,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat