./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix017.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix017.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix017.oepc.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix017.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 17:35:06,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:35:06,196 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:35:06,201 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:35:06,201 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:35:06,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:35:06,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:35:06,226 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:35:06,227 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:35:06,230 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:35:06,230 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:35:06,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:35:06,231 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:35:06,232 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:35:06,232 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:35:06,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:35:06,232 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:35:06,233 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:35:06,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:35:06,233 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:35:06,233 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:35:06,234 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:35:06,234 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:35:06,234 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:35:06,234 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:35:06,234 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:35:06,235 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:35:06,235 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:35:06,235 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:35:06,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:35:06,236 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:35:06,237 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:35:06,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:35:06,237 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:35:06,237 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:35:06,237 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:35:06,238 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:35:06,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:35:06,238 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:35:06,238 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:35:06,238 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:35:06,239 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:35:06,239 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:35:06,239 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:35:06,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:35:06,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:35:06,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:35:06,470 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:35:06,471 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:35:06,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix017.oepc.i [2024-01-31 17:35:07,460 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:35:07,702 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:35:07,706 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix017.oepc.i [2024-01-31 17:35:07,722 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01a829e80/a208ef4abaa048a0aa48b6850a6a6063/FLAGccdeea6f4 [2024-01-31 17:35:07,737 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01a829e80/a208ef4abaa048a0aa48b6850a6a6063 [2024-01-31 17:35:07,739 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:35:07,739 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:35:07,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix017.oepc.yml/witness.yml [2024-01-31 17:35:08,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:35:08,467 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:35:08,468 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:35:08,468 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:35:08,471 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:35:08,472 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:35:07" (1/2) ... [2024-01-31 17:35:08,473 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2191832a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:08, skipping insertion in model container [2024-01-31 17:35:08,473 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:35:07" (1/2) ... [2024-01-31 17:35:08,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@32e1d65b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:08, skipping insertion in model container [2024-01-31 17:35:08,475 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:35:08" (2/2) ... [2024-01-31 17:35:08,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2191832a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:08, skipping insertion in model container [2024-01-31 17:35:08,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:35:08" (2/2) ... [2024-01-31 17:35:08,476 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:35:10,689 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:35:10,690 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 17:35:10,690 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 17:35:10,715 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:35:10,829 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix017.oepc.i[945,958] [2024-01-31 17:35:10,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:35:10,989 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:35:11,001 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix017.oepc.i[945,958] Start Parsing Local [2024-01-31 17:35:11,018 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 17:35:11,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:35:11,127 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:35:11,127 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:11 WrapperNode [2024-01-31 17:35:11,127 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:35:11,128 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:35:11,128 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:35:11,128 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:35:11,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:11" (1/1) ... [2024-01-31 17:35:11,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:11" (1/1) ... [2024-01-31 17:35:11,163 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 147 [2024-01-31 17:35:11,166 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:35:11,167 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:35:11,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:35:11,168 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:35:11,176 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:11" (1/1) ... [2024-01-31 17:35:11,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:11" (1/1) ... [2024-01-31 17:35:11,182 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:11" (1/1) ... [2024-01-31 17:35:11,195 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-31 17:35:11,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:11" (1/1) ... [2024-01-31 17:35:11,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:11" (1/1) ... [2024-01-31 17:35:11,202 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:11" (1/1) ... [2024-01-31 17:35:11,204 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:11" (1/1) ... [2024-01-31 17:35:11,205 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:11" (1/1) ... [2024-01-31 17:35:11,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:11" (1/1) ... [2024-01-31 17:35:11,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:35:11,209 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:35:11,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:35:11,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:35:11,210 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:11" (1/1) ... [2024-01-31 17:35:11,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:35:11,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:35:11,277 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 17:35:11,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 17:35:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:35:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:35:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:35:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:35:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:35:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:35:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:35:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:35:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:35:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 17:35:11,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 17:35:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 17:35:11,344 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 17:35:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 17:35:11,345 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 17:35:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-31 17:35:11,347 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-31 17:35:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:35:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:35:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:35:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:35:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:35:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:35:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:35:11,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:35:11,350 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:35:11,513 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:35:11,515 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:35:11,726 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:35:11,726 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:35:11,859 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:35:11,860 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:35:11,860 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:35:11 BoogieIcfgContainer [2024-01-31 17:35:11,860 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:35:11,862 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:35:11,862 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:35:11,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:35:11,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:35:07" (1/4) ... [2024-01-31 17:35:11,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b125544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:35:11, skipping insertion in model container [2024-01-31 17:35:11,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:35:08" (2/4) ... [2024-01-31 17:35:11,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b125544 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:35:11, skipping insertion in model container [2024-01-31 17:35:11,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:11" (3/4) ... [2024-01-31 17:35:11,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b125544 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:35:11, skipping insertion in model container [2024-01-31 17:35:11,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:35:11" (4/4) ... [2024-01-31 17:35:11,866 INFO L112 eAbstractionObserver]: Analyzing ICFG mix017.oepc.i [2024-01-31 17:35:11,879 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:35:11,880 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 17:35:11,880 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:35:11,911 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:35:11,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 52 transitions, 120 flow [2024-01-31 17:35:11,952 INFO L124 PetriNetUnfolderBase]: 1/48 cut-off events. [2024-01-31 17:35:11,953 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:35:11,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 1/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2024-01-31 17:35:11,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 52 transitions, 120 flow [2024-01-31 17:35:11,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 48 transitions, 108 flow [2024-01-31 17:35:11,964 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:35:11,969 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=false, 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;@5853eabd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:35:11,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-01-31 17:35:11,972 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:35:11,972 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-31 17:35:11,972 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:35:11,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:11,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:35:11,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:11,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:11,977 INFO L85 PathProgramCache]: Analyzing trace with hash 12553947, now seen corresponding path program 1 times [2024-01-31 17:35:11,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:11,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737727114] [2024-01-31 17:35:11,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:11,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:12,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:12,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:12,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737727114] [2024-01-31 17:35:12,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737727114] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:12,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:12,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:35:12,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562284992] [2024-01-31 17:35:12,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:12,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:35:12,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:12,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:35:12,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:35:12,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 52 [2024-01-31 17:35:12,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:12,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:12,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 52 [2024-01-31 17:35:12,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:12,887 INFO L124 PetriNetUnfolderBase]: 3179/5508 cut-off events. [2024-01-31 17:35:12,887 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:35:12,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10036 conditions, 5508 events. 3179/5508 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 40809 event pairs, 3179 based on Foata normal form. 135/5019 useless extension candidates. Maximal degree in co-relation 10024. Up to 4391 conditions per place. [2024-01-31 17:35:12,923 INFO L140 encePairwiseOnDemand]: 50/52 looper letters, 24 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2024-01-31 17:35:12,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 46 transitions, 152 flow [2024-01-31 17:35:12,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:35:12,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:35:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 78 transitions. [2024-01-31 17:35:12,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-01-31 17:35:12,934 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 108 flow. Second operand 2 states and 78 transitions. [2024-01-31 17:35:12,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 46 transitions, 152 flow [2024-01-31 17:35:12,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 46 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:35:12,943 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 100 flow [2024-01-31 17:35:12,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-01-31 17:35:12,947 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2024-01-31 17:35:12,947 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 100 flow [2024-01-31 17:35:12,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:12,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:12,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:35:12,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:35:12,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:12,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:12,950 INFO L85 PathProgramCache]: Analyzing trace with hash 12553948, now seen corresponding path program 1 times [2024-01-31 17:35:12,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:12,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337197266] [2024-01-31 17:35:12,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:12,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:13,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:13,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:13,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337197266] [2024-01-31 17:35:13,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337197266] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:13,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:13,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:35:13,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469807821] [2024-01-31 17:35:13,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:13,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:35:13,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:13,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:35:13,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:35:13,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 52 [2024-01-31 17:35:13,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:13,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:13,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 52 [2024-01-31 17:35:13,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:13,605 INFO L124 PetriNetUnfolderBase]: 2495/3993 cut-off events. [2024-01-31 17:35:13,606 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:35:13,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7566 conditions, 3993 events. 2495/3993 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 25066 event pairs, 1647 based on Foata normal form. 0/3914 useless extension candidates. Maximal degree in co-relation 7563. Up to 2779 conditions per place. [2024-01-31 17:35:13,626 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 37 selfloop transitions, 2 changer transitions 2/63 dead transitions. [2024-01-31 17:35:13,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 222 flow [2024-01-31 17:35:13,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:35:13,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:35:13,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-01-31 17:35:13,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7692307692307693 [2024-01-31 17:35:13,631 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 100 flow. Second operand 3 states and 120 transitions. [2024-01-31 17:35:13,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 222 flow [2024-01-31 17:35:13,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 222 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:35:13,639 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 100 flow [2024-01-31 17:35:13,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, 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=100, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-01-31 17:35:13,640 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2024-01-31 17:35:13,640 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 100 flow [2024-01-31 17:35:13,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:13,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:13,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:13,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:35:13,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:13,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:13,643 INFO L85 PathProgramCache]: Analyzing trace with hash -408659267, now seen corresponding path program 1 times [2024-01-31 17:35:13,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:13,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039464055] [2024-01-31 17:35:13,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:13,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:13,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:13,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:13,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039464055] [2024-01-31 17:35:13,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039464055] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:13,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:13,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:35:13,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659370067] [2024-01-31 17:35:13,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:13,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:35:13,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:13,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:35:13,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:35:13,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 52 [2024-01-31 17:35:13,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:13,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:13,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 52 [2024-01-31 17:35:13,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:14,202 INFO L124 PetriNetUnfolderBase]: 3311/5211 cut-off events. [2024-01-31 17:35:14,202 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-01-31 17:35:14,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10204 conditions, 5211 events. 3311/5211 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 34578 event pairs, 2495 based on Foata normal form. 0/4941 useless extension candidates. Maximal degree in co-relation 10200. Up to 3465 conditions per place. [2024-01-31 17:35:14,228 INFO L140 encePairwiseOnDemand]: 50/52 looper letters, 33 selfloop transitions, 1 changer transitions 1/53 dead transitions. [2024-01-31 17:35:14,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 190 flow [2024-01-31 17:35:14,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:35:14,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:35:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-01-31 17:35:14,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2024-01-31 17:35:14,233 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 102 transitions. [2024-01-31 17:35:14,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 190 flow [2024-01-31 17:35:14,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:35:14,235 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 94 flow [2024-01-31 17:35:14,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2024-01-31 17:35:14,236 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -5 predicate places. [2024-01-31 17:35:14,237 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 94 flow [2024-01-31 17:35:14,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:14,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:14,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:14,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:35:14,237 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:14,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:14,238 INFO L85 PathProgramCache]: Analyzing trace with hash 216465031, now seen corresponding path program 1 times [2024-01-31 17:35:14,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:14,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951742168] [2024-01-31 17:35:14,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:14,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:14,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:14,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951742168] [2024-01-31 17:35:14,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951742168] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:14,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:14,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:35:14,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642527848] [2024-01-31 17:35:14,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:14,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:35:14,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:14,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:35:14,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:35:14,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-01-31 17:35:14,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:14,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:14,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-01-31 17:35:14,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:15,991 INFO L124 PetriNetUnfolderBase]: 12009/17312 cut-off events. [2024-01-31 17:35:15,992 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-01-31 17:35:16,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34138 conditions, 17312 events. 12009/17312 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 113735 event pairs, 7551 based on Foata normal form. 400/17698 useless extension candidates. Maximal degree in co-relation 34134. Up to 13301 conditions per place. [2024-01-31 17:35:16,051 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 38 selfloop transitions, 5 changer transitions 41/97 dead transitions. [2024-01-31 17:35:16,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 97 transitions, 378 flow [2024-01-31 17:35:16,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:35:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:35:16,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2024-01-31 17:35:16,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5631868131868132 [2024-01-31 17:35:16,053 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 94 flow. Second operand 7 states and 205 transitions. [2024-01-31 17:35:16,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 97 transitions, 378 flow [2024-01-31 17:35:16,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 97 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:35:16,120 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 150 flow [2024-01-31 17:35:16,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=150, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2024-01-31 17:35:16,120 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 4 predicate places. [2024-01-31 17:35:16,121 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 150 flow [2024-01-31 17:35:16,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:16,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:16,121 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] [2024-01-31 17:35:16,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:35:16,121 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:16,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:16,122 INFO L85 PathProgramCache]: Analyzing trace with hash 642766423, now seen corresponding path program 1 times [2024-01-31 17:35:16,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:16,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144100792] [2024-01-31 17:35:16,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:16,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:16,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:16,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144100792] [2024-01-31 17:35:16,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144100792] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:16,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:16,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:35:16,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805240772] [2024-01-31 17:35:16,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:16,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:35:16,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:16,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:35:16,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:35:16,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-01-31 17:35:16,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:16,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:16,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-01-31 17:35:16,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:17,720 INFO L124 PetriNetUnfolderBase]: 10995/15913 cut-off events. [2024-01-31 17:35:17,720 INFO L125 PetriNetUnfolderBase]: For 16450/16456 co-relation queries the response was YES. [2024-01-31 17:35:17,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43135 conditions, 15913 events. 10995/15913 cut-off events. For 16450/16456 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 102079 event pairs, 1923 based on Foata normal form. 390/16195 useless extension candidates. Maximal degree in co-relation 43126. Up to 10369 conditions per place. [2024-01-31 17:35:17,962 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 43 selfloop transitions, 3 changer transitions 51/110 dead transitions. [2024-01-31 17:35:17,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 110 transitions, 584 flow [2024-01-31 17:35:17,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:35:17,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:35:17,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2024-01-31 17:35:17,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5879120879120879 [2024-01-31 17:35:17,964 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 150 flow. Second operand 7 states and 214 transitions. [2024-01-31 17:35:17,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 110 transitions, 584 flow [2024-01-31 17:35:18,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 110 transitions, 571 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-31 17:35:18,041 INFO L231 Difference]: Finished difference. Result has 68 places, 46 transitions, 160 flow [2024-01-31 17:35:18,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=160, PETRI_PLACES=68, PETRI_TRANSITIONS=46} [2024-01-31 17:35:18,043 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 8 predicate places. [2024-01-31 17:35:18,043 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 46 transitions, 160 flow [2024-01-31 17:35:18,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:18,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:18,044 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] [2024-01-31 17:35:18,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:35:18,044 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:18,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:18,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1974341443, now seen corresponding path program 1 times [2024-01-31 17:35:18,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:18,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292671236] [2024-01-31 17:35:18,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:18,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:18,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:18,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:18,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292671236] [2024-01-31 17:35:18,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292671236] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:18,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:18,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:35:18,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867876365] [2024-01-31 17:35:18,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:18,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:35:18,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:18,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:35:18,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:35:18,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-01-31 17:35:18,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 46 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:18,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:18,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-01-31 17:35:18,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:19,859 INFO L124 PetriNetUnfolderBase]: 13587/20995 cut-off events. [2024-01-31 17:35:19,859 INFO L125 PetriNetUnfolderBase]: For 9662/9838 co-relation queries the response was YES. [2024-01-31 17:35:19,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47781 conditions, 20995 events. 13587/20995 cut-off events. For 9662/9838 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 155699 event pairs, 2473 based on Foata normal form. 679/20884 useless extension candidates. Maximal degree in co-relation 47769. Up to 9551 conditions per place. [2024-01-31 17:35:19,963 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 53 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2024-01-31 17:35:19,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 348 flow [2024-01-31 17:35:19,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:35:19,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:35:19,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-01-31 17:35:19,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6971153846153846 [2024-01-31 17:35:19,965 INFO L175 Difference]: Start difference. First operand has 68 places, 46 transitions, 160 flow. Second operand 4 states and 145 transitions. [2024-01-31 17:35:19,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 348 flow [2024-01-31 17:35:20,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 78 transitions, 334 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-31 17:35:20,117 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 192 flow [2024-01-31 17:35:20,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-01-31 17:35:20,119 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 3 predicate places. [2024-01-31 17:35:20,119 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 192 flow [2024-01-31 17:35:20,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:20,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:20,120 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] [2024-01-31 17:35:20,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:35:20,120 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:20,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:20,121 INFO L85 PathProgramCache]: Analyzing trace with hash 427698598, now seen corresponding path program 1 times [2024-01-31 17:35:20,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:20,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303019505] [2024-01-31 17:35:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:20,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:20,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:20,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303019505] [2024-01-31 17:35:20,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303019505] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:20,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:20,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:35:20,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73392167] [2024-01-31 17:35:20,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:20,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:35:20,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:20,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:35:20,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:35:20,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-01-31 17:35:20,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 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) [2024-01-31 17:35:20,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:20,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-01-31 17:35:20,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:21,765 INFO L124 PetriNetUnfolderBase]: 11172/17118 cut-off events. [2024-01-31 17:35:21,765 INFO L125 PetriNetUnfolderBase]: For 5971/6085 co-relation queries the response was YES. [2024-01-31 17:35:21,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41348 conditions, 17118 events. 11172/17118 cut-off events. For 5971/6085 co-relation queries the response was YES. Maximal size of possible extension queue 888. Compared 119950 event pairs, 1452 based on Foata normal form. 602/17066 useless extension candidates. Maximal degree in co-relation 41338. Up to 5576 conditions per place. [2024-01-31 17:35:21,849 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 69 selfloop transitions, 10 changer transitions 0/98 dead transitions. [2024-01-31 17:35:21,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 98 transitions, 473 flow [2024-01-31 17:35:21,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:35:21,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:35:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 186 transitions. [2024-01-31 17:35:21,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7153846153846154 [2024-01-31 17:35:21,851 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 192 flow. Second operand 5 states and 186 transitions. [2024-01-31 17:35:21,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 98 transitions, 473 flow [2024-01-31 17:35:21,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 98 transitions, 470 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:35:21,854 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 257 flow [2024-01-31 17:35:21,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-01-31 17:35:21,854 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 8 predicate places. [2024-01-31 17:35:21,854 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 257 flow [2024-01-31 17:35:21,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 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) [2024-01-31 17:35:21,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:21,855 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, 1, 1, 1] [2024-01-31 17:35:21,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:35:21,855 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:21,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:21,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1672689831, now seen corresponding path program 1 times [2024-01-31 17:35:21,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:21,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360754970] [2024-01-31 17:35:21,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:21,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:22,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:22,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:22,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360754970] [2024-01-31 17:35:22,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360754970] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:22,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:22,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 17:35:22,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198328831] [2024-01-31 17:35:22,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:22,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:35:22,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:22,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:35:22,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-01-31 17:35:22,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-01-31 17:35:22,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 257 flow. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:22,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:22,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-01-31 17:35:22,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:25,409 INFO L124 PetriNetUnfolderBase]: 22308/34310 cut-off events. [2024-01-31 17:35:25,409 INFO L125 PetriNetUnfolderBase]: For 40235/46494 co-relation queries the response was YES. [2024-01-31 17:35:25,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97304 conditions, 34310 events. 22308/34310 cut-off events. For 40235/46494 co-relation queries the response was YES. Maximal size of possible extension queue 1754. Compared 267648 event pairs, 5612 based on Foata normal form. 673/32920 useless extension candidates. Maximal degree in co-relation 97292. Up to 12665 conditions per place. [2024-01-31 17:35:25,785 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 149 selfloop transitions, 34 changer transitions 14/220 dead transitions. [2024-01-31 17:35:25,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 220 transitions, 1233 flow [2024-01-31 17:35:25,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-01-31 17:35:25,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-01-31 17:35:25,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 455 transitions. [2024-01-31 17:35:25,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-01-31 17:35:25,787 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 257 flow. Second operand 15 states and 455 transitions. [2024-01-31 17:35:25,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 220 transitions, 1233 flow [2024-01-31 17:35:25,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 220 transitions, 1218 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-31 17:35:25,796 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 530 flow [2024-01-31 17:35:25,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=530, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2024-01-31 17:35:25,798 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 30 predicate places. [2024-01-31 17:35:25,798 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 530 flow [2024-01-31 17:35:25,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:25,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:25,799 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, 1, 1, 1] [2024-01-31 17:35:25,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:35:25,799 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:25,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:25,800 INFO L85 PathProgramCache]: Analyzing trace with hash -234000623, now seen corresponding path program 2 times [2024-01-31 17:35:25,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:25,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270012381] [2024-01-31 17:35:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:25,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:25,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:25,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270012381] [2024-01-31 17:35:25,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270012381] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:25,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:25,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:35:25,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238150680] [2024-01-31 17:35:25,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:25,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:35:25,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:25,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:35:25,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:35:25,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-01-31 17:35:25,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 530 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:25,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:25,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-01-31 17:35:25,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:29,207 INFO L124 PetriNetUnfolderBase]: 22856/33764 cut-off events. [2024-01-31 17:35:29,207 INFO L125 PetriNetUnfolderBase]: For 63467/67472 co-relation queries the response was YES. [2024-01-31 17:35:29,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113212 conditions, 33764 events. 22856/33764 cut-off events. For 63467/67472 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 231137 event pairs, 1795 based on Foata normal form. 1642/34473 useless extension candidates. Maximal degree in co-relation 113190. Up to 11324 conditions per place. [2024-01-31 17:35:29,678 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 123 selfloop transitions, 14 changer transitions 10/176 dead transitions. [2024-01-31 17:35:29,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 176 transitions, 1256 flow [2024-01-31 17:35:29,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:35:29,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:35:29,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 225 transitions. [2024-01-31 17:35:29,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7211538461538461 [2024-01-31 17:35:29,680 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 530 flow. Second operand 6 states and 225 transitions. [2024-01-31 17:35:29,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 176 transitions, 1256 flow [2024-01-31 17:35:29,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 176 transitions, 1161 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-01-31 17:35:29,740 INFO L231 Difference]: Finished difference. Result has 91 places, 85 transitions, 512 flow [2024-01-31 17:35:29,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=512, PETRI_PLACES=91, PETRI_TRANSITIONS=85} [2024-01-31 17:35:29,741 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 31 predicate places. [2024-01-31 17:35:29,741 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 85 transitions, 512 flow [2024-01-31 17:35:29,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:29,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:29,741 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:29,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:35:29,742 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:29,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:29,742 INFO L85 PathProgramCache]: Analyzing trace with hash 227203170, now seen corresponding path program 1 times [2024-01-31 17:35:29,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:29,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074859110] [2024-01-31 17:35:29,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:29,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:30,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:30,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:30,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074859110] [2024-01-31 17:35:30,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074859110] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:30,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:30,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:35:30,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910726939] [2024-01-31 17:35:30,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:30,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:35:30,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:30,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:35:30,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:35:30,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-01-31 17:35:30,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 85 transitions, 512 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:30,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:30,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-01-31 17:35:30,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:33,325 INFO L124 PetriNetUnfolderBase]: 16541/28191 cut-off events. [2024-01-31 17:35:33,325 INFO L125 PetriNetUnfolderBase]: For 61725/71136 co-relation queries the response was YES. [2024-01-31 17:35:33,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92508 conditions, 28191 events. 16541/28191 cut-off events. For 61725/71136 co-relation queries the response was YES. Maximal size of possible extension queue 1894. Compared 251033 event pairs, 4576 based on Foata normal form. 1289/26667 useless extension candidates. Maximal degree in co-relation 92486. Up to 5815 conditions per place. [2024-01-31 17:35:33,500 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 81 selfloop transitions, 20 changer transitions 21/165 dead transitions. [2024-01-31 17:35:33,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 165 transitions, 1146 flow [2024-01-31 17:35:33,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:35:33,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:35:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 293 transitions. [2024-01-31 17:35:33,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6260683760683761 [2024-01-31 17:35:33,502 INFO L175 Difference]: Start difference. First operand has 91 places, 85 transitions, 512 flow. Second operand 9 states and 293 transitions. [2024-01-31 17:35:33,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 165 transitions, 1146 flow [2024-01-31 17:35:33,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 165 transitions, 1099 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-01-31 17:35:33,747 INFO L231 Difference]: Finished difference. Result has 97 places, 92 transitions, 602 flow [2024-01-31 17:35:33,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=602, PETRI_PLACES=97, PETRI_TRANSITIONS=92} [2024-01-31 17:35:33,748 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 37 predicate places. [2024-01-31 17:35:33,748 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 92 transitions, 602 flow [2024-01-31 17:35:33,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:33,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:33,749 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:33,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 17:35:33,749 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:33,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:33,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1406559244, now seen corresponding path program 2 times [2024-01-31 17:35:33,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:33,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909559682] [2024-01-31 17:35:33,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:33,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:33,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:33,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:33,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909559682] [2024-01-31 17:35:33,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909559682] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:33,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:33,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:35:33,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69317988] [2024-01-31 17:35:33,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:33,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:35:33,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:33,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:35:33,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:35:33,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-01-31 17:35:33,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 92 transitions, 602 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:33,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:33,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-01-31 17:35:33,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:39,063 INFO L124 PetriNetUnfolderBase]: 30007/49452 cut-off events. [2024-01-31 17:35:39,080 INFO L125 PetriNetUnfolderBase]: For 119129/130437 co-relation queries the response was YES. [2024-01-31 17:35:39,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164415 conditions, 49452 events. 30007/49452 cut-off events. For 119129/130437 co-relation queries the response was YES. Maximal size of possible extension queue 3380. Compared 458945 event pairs, 9445 based on Foata normal form. 1731/45403 useless extension candidates. Maximal degree in co-relation 164390. Up to 17603 conditions per place. [2024-01-31 17:35:39,514 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 123 selfloop transitions, 3 changer transitions 27/193 dead transitions. [2024-01-31 17:35:39,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 193 transitions, 1582 flow [2024-01-31 17:35:39,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:35:39,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:35:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-01-31 17:35:39,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6442307692307693 [2024-01-31 17:35:39,518 INFO L175 Difference]: Start difference. First operand has 97 places, 92 transitions, 602 flow. Second operand 6 states and 201 transitions. [2024-01-31 17:35:39,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 193 transitions, 1582 flow [2024-01-31 17:35:40,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 193 transitions, 1547 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-01-31 17:35:40,291 INFO L231 Difference]: Finished difference. Result has 97 places, 94 transitions, 624 flow [2024-01-31 17:35:40,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=624, PETRI_PLACES=97, PETRI_TRANSITIONS=94} [2024-01-31 17:35:40,292 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 37 predicate places. [2024-01-31 17:35:40,292 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 94 transitions, 624 flow [2024-01-31 17:35:40,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:40,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:40,292 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:40,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 17:35:40,293 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:40,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:40,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1681131946, now seen corresponding path program 3 times [2024-01-31 17:35:40,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:40,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152772307] [2024-01-31 17:35:40,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:40,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:40,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:40,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152772307] [2024-01-31 17:35:40,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152772307] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:40,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:40,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:35:40,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800618599] [2024-01-31 17:35:40,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:40,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:35:40,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:40,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:35:40,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:35:40,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-01-31 17:35:40,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 624 flow. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:40,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:40,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-01-31 17:35:40,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:47,311 INFO L124 PetriNetUnfolderBase]: 49836/72709 cut-off events. [2024-01-31 17:35:47,311 INFO L125 PetriNetUnfolderBase]: For 202808/211070 co-relation queries the response was YES. [2024-01-31 17:35:47,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260136 conditions, 72709 events. 49836/72709 cut-off events. For 202808/211070 co-relation queries the response was YES. Maximal size of possible extension queue 3374. Compared 552378 event pairs, 3358 based on Foata normal form. 2730/73729 useless extension candidates. Maximal degree in co-relation 260111. Up to 26598 conditions per place. [2024-01-31 17:35:47,743 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 107 selfloop transitions, 18 changer transitions 39/185 dead transitions. [2024-01-31 17:35:47,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 185 transitions, 1459 flow [2024-01-31 17:35:47,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:35:47,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:35:47,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 242 transitions. [2024-01-31 17:35:47,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6648351648351648 [2024-01-31 17:35:47,745 INFO L175 Difference]: Start difference. First operand has 97 places, 94 transitions, 624 flow. Second operand 7 states and 242 transitions. [2024-01-31 17:35:47,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 185 transitions, 1459 flow [2024-01-31 17:35:50,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 185 transitions, 1432 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-01-31 17:35:50,679 INFO L231 Difference]: Finished difference. Result has 99 places, 77 transitions, 526 flow [2024-01-31 17:35:50,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=526, PETRI_PLACES=99, PETRI_TRANSITIONS=77} [2024-01-31 17:35:50,680 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 39 predicate places. [2024-01-31 17:35:50,680 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 77 transitions, 526 flow [2024-01-31 17:35:50,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:50,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:50,681 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:50,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 17:35:50,681 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:50,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:50,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1683883201, now seen corresponding path program 1 times [2024-01-31 17:35:50,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:50,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513580795] [2024-01-31 17:35:50,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:50,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:50,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:50,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:50,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513580795] [2024-01-31 17:35:50,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513580795] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:50,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:50,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:35:50,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834760728] [2024-01-31 17:35:50,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:50,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:35:50,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:50,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:35:50,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:35:50,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-01-31 17:35:50,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 77 transitions, 526 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:50,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:50,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-01-31 17:35:50,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand