./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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 16:43:31,207 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:43:31,248 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:43:31,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:43:31,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:43:31,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:43:31,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:43:31,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:43:31,268 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:43:31,268 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:43:31,269 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:43:31,269 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:43:31,269 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:43:31,270 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:43:31,270 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:43:31,270 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:43:31,270 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:43:31,271 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:43:31,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:43:31,271 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:43:31,271 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:43:31,272 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:43:31,272 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:43:31,272 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:43:31,273 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:43:31,273 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:43:31,273 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:43:31,274 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:43:31,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:43:31,274 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:43:31,274 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:43:31,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:43:31,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:43:31,275 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:43:31,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:43:31,276 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:43:31,276 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:43:31,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:43:31,277 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:43:31,277 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:43:31,277 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:43:31,278 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:43:31,278 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:43:31,278 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:43:31,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:43:31,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:43:31,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:43:31,525 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:43:31,526 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:43:31,527 INFO L431 ainManager$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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-01-31 16:43:32,175 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:43:32,176 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:43:32,177 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-01-31 16:43:33,223 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:43:33,418 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:43:33,419 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-01-31 16:43:33,441 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55d93ff23/b79f7489d36b47f8bab353586b6f0399/FLAG895a8022c [2024-01-31 16:43:33,460 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55d93ff23/b79f7489d36b47f8bab353586b6f0399 [2024-01-31 16:43:33,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:43:33,462 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:43:33,464 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:43:33,464 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:43:33,468 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:43:33,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:43:32" (1/2) ... [2024-01-31 16:43:33,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f54ef04 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:33, skipping insertion in model container [2024-01-31 16:43:33,472 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:43:32" (1/2) ... [2024-01-31 16:43:33,473 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1f6dc277 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:33, skipping insertion in model container [2024-01-31 16:43:33,473 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:43:33" (2/2) ... [2024-01-31 16:43:33,473 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f54ef04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:33, skipping insertion in model container [2024-01-31 16:43:33,474 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:43:33" (2/2) ... [2024-01-31 16:43:33,474 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:43:35,441 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:43:35,442 INFO L98 nessWitnessExtractor]: Location invariant before [L19-L19] expression == 0 [2024-01-31 16:43:35,442 INFO L98 nessWitnessExtractor]: Location invariant after [L19-L19] expression == 1 [2024-01-31 16:43:35,471 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:43:35,584 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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2024-01-31 16:43:35,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:43:35,806 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:43:35,818 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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] Start Parsing Local [2024-01-31 16:43:35,839 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 16:43:35,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:43:35,920 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:43:35,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:35 WrapperNode [2024-01-31 16:43:35,921 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:43:35,922 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:43:35,922 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:43:35,922 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:43:35,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:35" (1/1) ... [2024-01-31 16:43:35,958 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:35" (1/1) ... [2024-01-31 16:43:35,979 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 155 [2024-01-31 16:43:35,980 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:43:35,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:43:35,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:43:35,981 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:43:35,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:35" (1/1) ... [2024-01-31 16:43:35,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:35" (1/1) ... [2024-01-31 16:43:35,993 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:35" (1/1) ... [2024-01-31 16:43:36,006 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-31 16:43:36,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:35" (1/1) ... [2024-01-31 16:43:36,007 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:35" (1/1) ... [2024-01-31 16:43:36,019 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:35" (1/1) ... [2024-01-31 16:43:36,022 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:35" (1/1) ... [2024-01-31 16:43:36,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:35" (1/1) ... [2024-01-31 16:43:36,028 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:35" (1/1) ... [2024-01-31 16:43:36,031 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:43:36,032 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:43:36,032 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:43:36,032 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:43:36,032 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:35" (1/1) ... [2024-01-31 16:43:36,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:43:36,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:43:36,064 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 16:43:36,071 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 16:43:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:43:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:43:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:43:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:43:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:43:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:43:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:43:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 16:43:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 16:43:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 16:43:36,100 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 16:43:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:43:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:43:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:43:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:43:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:43:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:43:36,105 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 16:43:36,236 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:43:36,237 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:43:36,539 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:43:36,539 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:43:36,710 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:43:36,710 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:43:36,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:43:36 BoogieIcfgContainer [2024-01-31 16:43:36,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:43:36,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:43:36,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:43:36,717 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:43:36,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:43:32" (1/4) ... [2024-01-31 16:43:36,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1855b5c7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:43:36, skipping insertion in model container [2024-01-31 16:43:36,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:43:33" (2/4) ... [2024-01-31 16:43:36,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1855b5c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:43:36, skipping insertion in model container [2024-01-31 16:43:36,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:35" (3/4) ... [2024-01-31 16:43:36,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1855b5c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:43:36, skipping insertion in model container [2024-01-31 16:43:36,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:43:36" (4/4) ... [2024-01-31 16:43:36,720 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-01-31 16:43:36,735 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:43:36,735 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 16:43:36,735 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:43:36,770 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:43:36,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 80 flow [2024-01-31 16:43:36,821 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-01-31 16:43:36,821 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:43:36,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 67 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-01-31 16:43:36,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 80 flow [2024-01-31 16:43:36,833 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 34 transitions, 74 flow [2024-01-31 16:43:36,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:43:36,856 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;@41bdf238, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:43:36,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-01-31 16:43:36,863 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:43:36,863 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-01-31 16:43:36,863 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:43:36,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:36,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:43:36,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:36,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:36,869 INFO L85 PathProgramCache]: Analyzing trace with hash -763141966, now seen corresponding path program 1 times [2024-01-31 16:43:36,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:36,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040534118] [2024-01-31 16:43:36,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:36,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:37,114 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 16:43:37,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:37,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040534118] [2024-01-31 16:43:37,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040534118] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:37,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:37,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:43:37,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142619771] [2024-01-31 16:43:37,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:37,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 16:43:37,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:37,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 16:43:37,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 16:43:37,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 36 [2024-01-31 16:43:37,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 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 16:43:37,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:37,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 36 [2024-01-31 16:43:37,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:37,339 INFO L124 PetriNetUnfolderBase]: 322/708 cut-off events. [2024-01-31 16:43:37,339 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:43:37,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1267 conditions, 708 events. 322/708 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4259 event pairs, 322 based on Foata normal form. 25/640 useless extension candidates. Maximal degree in co-relation 1257. Up to 544 conditions per place. [2024-01-31 16:43:37,350 INFO L140 encePairwiseOnDemand]: 34/36 looper letters, 19 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2024-01-31 16:43:37,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 108 flow [2024-01-31 16:43:37,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 16:43:37,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 16:43:37,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 51 transitions. [2024-01-31 16:43:37,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-01-31 16:43:37,363 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 74 flow. Second operand 2 states and 51 transitions. [2024-01-31 16:43:37,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 108 flow [2024-01-31 16:43:37,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 32 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:43:37,367 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 68 flow [2024-01-31 16:43:37,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-01-31 16:43:37,374 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-01-31 16:43:37,374 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 68 flow [2024-01-31 16:43:37,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 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 16:43:37,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:37,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:43:37,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:43:37,375 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:37,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:37,376 INFO L85 PathProgramCache]: Analyzing trace with hash -763141965, now seen corresponding path program 1 times [2024-01-31 16:43:37,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:37,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424908542] [2024-01-31 16:43:37,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:37,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:37,585 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 16:43:37,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:37,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424908542] [2024-01-31 16:43:37,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424908542] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:37,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:37,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:43:37,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931151922] [2024-01-31 16:43:37,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:37,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:43:37,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:37,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:43:37,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:43:37,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 36 [2024-01-31 16:43:37,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 16:43:37,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:37,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 36 [2024-01-31 16:43:37,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:37,729 INFO L124 PetriNetUnfolderBase]: 264/591 cut-off events. [2024-01-31 16:43:37,730 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:43:37,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 591 events. 264/591 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3215 event pairs, 32 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 1053. Up to 373 conditions per place. [2024-01-31 16:43:37,733 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 24 selfloop transitions, 2 changer transitions 2/41 dead transitions. [2024-01-31 16:43:37,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 142 flow [2024-01-31 16:43:37,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:43:37,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:43:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-01-31 16:43:37,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2024-01-31 16:43:37,736 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 68 flow. Second operand 3 states and 74 transitions. [2024-01-31 16:43:37,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 142 flow [2024-01-31 16:43:37,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 142 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:43:37,739 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 68 flow [2024-01-31 16:43:37,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2024-01-31 16:43:37,741 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2024-01-31 16:43:37,743 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 68 flow [2024-01-31 16:43:37,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 16:43:37,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:37,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:37,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:43:37,749 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:37,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:37,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1024936380, now seen corresponding path program 1 times [2024-01-31 16:43:37,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:37,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68770075] [2024-01-31 16:43:37,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:37,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:37,832 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 16:43:37,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:37,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68770075] [2024-01-31 16:43:37,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68770075] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:37,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:37,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:43:37,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337298651] [2024-01-31 16:43:37,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:37,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:43:37,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:37,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:43:37,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:43:37,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-01-31 16:43:37,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 16:43:37,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:37,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-01-31 16:43:37,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:37,981 INFO L124 PetriNetUnfolderBase]: 344/660 cut-off events. [2024-01-31 16:43:37,982 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-01-31 16:43:37,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 660 events. 344/660 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3527 event pairs, 264 based on Foata normal form. 0/618 useless extension candidates. Maximal degree in co-relation 1298. Up to 451 conditions per place. [2024-01-31 16:43:37,986 INFO L140 encePairwiseOnDemand]: 34/36 looper letters, 26 selfloop transitions, 1 changer transitions 1/37 dead transitions. [2024-01-31 16:43:37,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 37 transitions, 140 flow [2024-01-31 16:43:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:43:37,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:43:37,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-01-31 16:43:37,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-01-31 16:43:37,989 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 68 flow. Second operand 3 states and 62 transitions. [2024-01-31 16:43:37,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 37 transitions, 140 flow [2024-01-31 16:43:37,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:43:37,990 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 62 flow [2024-01-31 16:43:37,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2024-01-31 16:43:37,992 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2024-01-31 16:43:37,992 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 62 flow [2024-01-31 16:43:37,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 16:43:37,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:37,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:37,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:43:37,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:37,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:37,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1708257120, now seen corresponding path program 1 times [2024-01-31 16:43:37,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:37,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895653620] [2024-01-31 16:43:37,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:37,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:38,279 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 16:43:38,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:38,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895653620] [2024-01-31 16:43:38,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895653620] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:38,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:38,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:43:38,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198438888] [2024-01-31 16:43:38,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:38,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:43:38,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:38,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:43:38,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:43:38,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-01-31 16:43:38,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 16:43:38,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:38,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-01-31 16:43:38,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:38,514 INFO L124 PetriNetUnfolderBase]: 377/716 cut-off events. [2024-01-31 16:43:38,514 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-01-31 16:43:38,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 716 events. 377/716 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3651 event pairs, 111 based on Foata normal form. 30/737 useless extension candidates. Maximal degree in co-relation 1396. Up to 409 conditions per place. [2024-01-31 16:43:38,518 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 25 selfloop transitions, 2 changer transitions 29/64 dead transitions. [2024-01-31 16:43:38,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 64 transitions, 246 flow [2024-01-31 16:43:38,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:43:38,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:43:38,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-01-31 16:43:38,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-01-31 16:43:38,522 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 62 flow. Second operand 7 states and 128 transitions. [2024-01-31 16:43:38,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 64 transitions, 246 flow [2024-01-31 16:43:38,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 245 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:43:38,525 INFO L231 Difference]: Finished difference. Result has 46 places, 28 transitions, 77 flow [2024-01-31 16:43:38,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=77, PETRI_PLACES=46, PETRI_TRANSITIONS=28} [2024-01-31 16:43:38,527 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-01-31 16:43:38,527 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 28 transitions, 77 flow [2024-01-31 16:43:38,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 16:43:38,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:38,527 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 16:43:38,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:43:38,528 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:38,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:38,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2068286674, now seen corresponding path program 1 times [2024-01-31 16:43:38,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:38,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086960220] [2024-01-31 16:43:38,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:38,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:38,897 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 16:43:38,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:38,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086960220] [2024-01-31 16:43:38,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086960220] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:38,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:38,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:43:38,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230414433] [2024-01-31 16:43:38,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:38,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:43:38,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:38,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:43:38,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:43:38,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-01-31 16:43:38,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 28 transitions, 77 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:38,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:38,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-01-31 16:43:38,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:39,202 INFO L124 PetriNetUnfolderBase]: 293/578 cut-off events. [2024-01-31 16:43:39,202 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2024-01-31 16:43:39,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1272 conditions, 578 events. 293/578 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2886 event pairs, 87 based on Foata normal form. 20/592 useless extension candidates. Maximal degree in co-relation 1263. Up to 315 conditions per place. [2024-01-31 16:43:39,205 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 28 selfloop transitions, 2 changer transitions 23/61 dead transitions. [2024-01-31 16:43:39,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 264 flow [2024-01-31 16:43:39,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:43:39,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:43:39,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-01-31 16:43:39,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2024-01-31 16:43:39,207 INFO L175 Difference]: Start difference. First operand has 46 places, 28 transitions, 77 flow. Second operand 7 states and 125 transitions. [2024-01-31 16:43:39,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 264 flow [2024-01-31 16:43:39,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 61 transitions, 242 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-01-31 16:43:39,209 INFO L231 Difference]: Finished difference. Result has 47 places, 28 transitions, 81 flow [2024-01-31 16:43:39,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=81, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2024-01-31 16:43:39,210 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2024-01-31 16:43:39,210 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions, 81 flow [2024-01-31 16:43:39,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:39,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:39,211 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] [2024-01-31 16:43:39,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:43:39,211 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:39,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:39,212 INFO L85 PathProgramCache]: Analyzing trace with hash 539461320, now seen corresponding path program 1 times [2024-01-31 16:43:39,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:39,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91292311] [2024-01-31 16:43:39,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:39,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:39,737 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 16:43:39,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:39,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91292311] [2024-01-31 16:43:39,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91292311] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:39,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:39,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:43:39,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420894491] [2024-01-31 16:43:39,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:39,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:43:39,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:39,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:43:39,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:43:39,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-01-31 16:43:39,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 81 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 16:43:39,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:39,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-01-31 16:43:39,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:40,250 INFO L124 PetriNetUnfolderBase]: 592/1092 cut-off events. [2024-01-31 16:43:40,251 INFO L125 PetriNetUnfolderBase]: For 348/349 co-relation queries the response was YES. [2024-01-31 16:43:40,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2494 conditions, 1092 events. 592/1092 cut-off events. For 348/349 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5386 event pairs, 118 based on Foata normal form. 24/1108 useless extension candidates. Maximal degree in co-relation 2484. Up to 356 conditions per place. [2024-01-31 16:43:40,256 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 64 selfloop transitions, 18 changer transitions 42/130 dead transitions. [2024-01-31 16:43:40,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 130 transitions, 596 flow [2024-01-31 16:43:40,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-31 16:43:40,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-31 16:43:40,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 256 transitions. [2024-01-31 16:43:40,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-31 16:43:40,259 INFO L175 Difference]: Start difference. First operand has 47 places, 28 transitions, 81 flow. Second operand 16 states and 256 transitions. [2024-01-31 16:43:40,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 130 transitions, 596 flow [2024-01-31 16:43:40,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 130 transitions, 546 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-01-31 16:43:40,262 INFO L231 Difference]: Finished difference. Result has 64 places, 45 transitions, 240 flow [2024-01-31 16:43:40,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=240, PETRI_PLACES=64, PETRI_TRANSITIONS=45} [2024-01-31 16:43:40,263 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 24 predicate places. [2024-01-31 16:43:40,263 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 45 transitions, 240 flow [2024-01-31 16:43:40,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 16:43:40,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:40,264 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] [2024-01-31 16:43:40,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:43:40,264 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:40,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:40,265 INFO L85 PathProgramCache]: Analyzing trace with hash 986556476, now seen corresponding path program 2 times [2024-01-31 16:43:40,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:40,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866752038] [2024-01-31 16:43:40,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:40,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:40,667 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 16:43:40,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:40,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866752038] [2024-01-31 16:43:40,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866752038] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:40,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:40,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:43:40,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679432974] [2024-01-31 16:43:40,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:40,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:43:40,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:40,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:43:40,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:43:40,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-01-31 16:43:40,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 45 transitions, 240 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 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 16:43:40,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:40,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-01-31 16:43:40,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:40,951 INFO L124 PetriNetUnfolderBase]: 450/924 cut-off events. [2024-01-31 16:43:40,952 INFO L125 PetriNetUnfolderBase]: For 2272/2297 co-relation queries the response was YES. [2024-01-31 16:43:40,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3309 conditions, 924 events. 450/924 cut-off events. For 2272/2297 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4937 event pairs, 103 based on Foata normal form. 20/930 useless extension candidates. Maximal degree in co-relation 3291. Up to 634 conditions per place. [2024-01-31 16:43:40,959 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 45 selfloop transitions, 14 changer transitions 17/88 dead transitions. [2024-01-31 16:43:40,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 88 transitions, 650 flow [2024-01-31 16:43:40,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:43:40,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:43:40,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-01-31 16:43:40,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-01-31 16:43:40,961 INFO L175 Difference]: Start difference. First operand has 64 places, 45 transitions, 240 flow. Second operand 10 states and 166 transitions. [2024-01-31 16:43:40,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 88 transitions, 650 flow [2024-01-31 16:43:40,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 88 transitions, 590 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-01-31 16:43:40,973 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 338 flow [2024-01-31 16:43:40,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=338, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-01-31 16:43:40,974 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 25 predicate places. [2024-01-31 16:43:40,974 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 338 flow [2024-01-31 16:43:40,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 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 16:43:40,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:40,974 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] [2024-01-31 16:43:40,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:43:40,975 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:40,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:40,976 INFO L85 PathProgramCache]: Analyzing trace with hash -944981794, now seen corresponding path program 3 times [2024-01-31 16:43:40,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:40,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038728010] [2024-01-31 16:43:40,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:40,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:41,578 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 16:43:41,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:41,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038728010] [2024-01-31 16:43:41,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038728010] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:41,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:41,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:43:41,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754396663] [2024-01-31 16:43:41,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:41,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:43:41,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:41,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:43:41,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:43:41,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-01-31 16:43:41,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 338 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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 16:43:41,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:41,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-01-31 16:43:41,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:41,941 INFO L124 PetriNetUnfolderBase]: 622/1179 cut-off events. [2024-01-31 16:43:41,941 INFO L125 PetriNetUnfolderBase]: For 4386/4466 co-relation queries the response was YES. [2024-01-31 16:43:41,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4758 conditions, 1179 events. 622/1179 cut-off events. For 4386/4466 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6087 event pairs, 101 based on Foata normal form. 50/1220 useless extension candidates. Maximal degree in co-relation 4739. Up to 814 conditions per place. [2024-01-31 16:43:41,949 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 57 selfloop transitions, 22 changer transitions 29/114 dead transitions. [2024-01-31 16:43:41,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 114 transitions, 989 flow [2024-01-31 16:43:41,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:43:41,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:43:41,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-01-31 16:43:41,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-01-31 16:43:41,951 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 338 flow. Second operand 10 states and 162 transitions. [2024-01-31 16:43:41,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 114 transitions, 989 flow [2024-01-31 16:43:41,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 114 transitions, 856 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-01-31 16:43:41,962 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 474 flow [2024-01-31 16:43:41,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=474, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2024-01-31 16:43:41,965 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 30 predicate places. [2024-01-31 16:43:41,965 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 474 flow [2024-01-31 16:43:41,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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 16:43:41,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:41,965 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] [2024-01-31 16:43:41,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:43:41,966 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:41,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:41,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1565076421, now seen corresponding path program 1 times [2024-01-31 16:43:41,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:41,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207697858] [2024-01-31 16:43:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:41,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:42,632 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 16:43:42,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:42,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207697858] [2024-01-31 16:43:42,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207697858] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:42,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:42,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-31 16:43:42,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37175210] [2024-01-31 16:43:42,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:42,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:43:42,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:42,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:43:42,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:43:42,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-01-31 16:43:42,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 474 flow. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 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 16:43:42,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:42,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-01-31 16:43:42,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:43,014 INFO L124 PetriNetUnfolderBase]: 592/1126 cut-off events. [2024-01-31 16:43:43,015 INFO L125 PetriNetUnfolderBase]: For 4687/4829 co-relation queries the response was YES. [2024-01-31 16:43:43,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4700 conditions, 1126 events. 592/1126 cut-off events. For 4687/4829 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5751 event pairs, 107 based on Foata normal form. 81/1201 useless extension candidates. Maximal degree in co-relation 4680. Up to 786 conditions per place. [2024-01-31 16:43:43,022 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 56 selfloop transitions, 27 changer transitions 23/112 dead transitions. [2024-01-31 16:43:43,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 112 transitions, 957 flow [2024-01-31 16:43:43,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:43:43,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:43:43,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-01-31 16:43:43,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-01-31 16:43:43,023 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 474 flow. Second operand 11 states and 164 transitions. [2024-01-31 16:43:43,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 112 transitions, 957 flow [2024-01-31 16:43:43,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 112 transitions, 887 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-01-31 16:43:43,045 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 575 flow [2024-01-31 16:43:43,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=575, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2024-01-31 16:43:43,046 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2024-01-31 16:43:43,046 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 575 flow [2024-01-31 16:43:43,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 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 16:43:43,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:43,046 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] [2024-01-31 16:43:43,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:43:43,047 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:43,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:43,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1641743915, now seen corresponding path program 2 times [2024-01-31 16:43:43,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:43,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903496976] [2024-01-31 16:43:43,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:43,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:43,688 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 16:43:43,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:43,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903496976] [2024-01-31 16:43:43,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903496976] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:43,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:43,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:43:43,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574543351] [2024-01-31 16:43:43,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:43,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:43:43,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:43,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:43:43,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:43:43,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-01-31 16:43:43,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 575 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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 16:43:43,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:43,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-01-31 16:43:43,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:44,001 INFO L124 PetriNetUnfolderBase]: 458/951 cut-off events. [2024-01-31 16:43:44,001 INFO L125 PetriNetUnfolderBase]: For 4282/4482 co-relation queries the response was YES. [2024-01-31 16:43:44,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3913 conditions, 951 events. 458/951 cut-off events. For 4282/4482 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5272 event pairs, 75 based on Foata normal form. 72/1011 useless extension candidates. Maximal degree in co-relation 3892. Up to 616 conditions per place. [2024-01-31 16:43:44,009 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 58 selfloop transitions, 30 changer transitions 13/113 dead transitions. [2024-01-31 16:43:44,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 113 transitions, 1039 flow [2024-01-31 16:43:44,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:43:44,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:43:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-01-31 16:43:44,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44675925925925924 [2024-01-31 16:43:44,011 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 575 flow. Second operand 12 states and 193 transitions. [2024-01-31 16:43:44,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 113 transitions, 1039 flow [2024-01-31 16:43:44,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 113 transitions, 970 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-01-31 16:43:44,022 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 715 flow [2024-01-31 16:43:44,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=715, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2024-01-31 16:43:44,023 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 43 predicate places. [2024-01-31 16:43:44,023 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 715 flow [2024-01-31 16:43:44,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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 16:43:44,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:44,024 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] [2024-01-31 16:43:44,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:43:44,024 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:44,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:44,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1619092814, now seen corresponding path program 1 times [2024-01-31 16:43:44,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:44,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099177129] [2024-01-31 16:43:44,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:44,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:44,348 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 16:43:44,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:44,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099177129] [2024-01-31 16:43:44,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099177129] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:44,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:44,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:43:44,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929551130] [2024-01-31 16:43:44,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:44,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:43:44,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:44,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:43:44,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:43:44,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-01-31 16:43:44,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 715 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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 16:43:44,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:44,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-01-31 16:43:44,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:44,745 INFO L124 PetriNetUnfolderBase]: 666/1263 cut-off events. [2024-01-31 16:43:44,745 INFO L125 PetriNetUnfolderBase]: For 7064/7287 co-relation queries the response was YES. [2024-01-31 16:43:44,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5641 conditions, 1263 events. 666/1263 cut-off events. For 7064/7287 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6629 event pairs, 107 based on Foata normal form. 69/1325 useless extension candidates. Maximal degree in co-relation 5617. Up to 834 conditions per place. [2024-01-31 16:43:44,753 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 67 selfloop transitions, 33 changer transitions 27/133 dead transitions. [2024-01-31 16:43:44,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 133 transitions, 1322 flow [2024-01-31 16:43:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:43:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:43:44,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-01-31 16:43:44,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-01-31 16:43:44,755 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 715 flow. Second operand 11 states and 171 transitions. [2024-01-31 16:43:44,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 133 transitions, 1322 flow [2024-01-31 16:43:44,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 133 transitions, 1255 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-01-31 16:43:44,769 INFO L231 Difference]: Finished difference. Result has 87 places, 85 transitions, 846 flow [2024-01-31 16:43:44,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=846, PETRI_PLACES=87, PETRI_TRANSITIONS=85} [2024-01-31 16:43:44,769 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 47 predicate places. [2024-01-31 16:43:44,770 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 85 transitions, 846 flow [2024-01-31 16:43:44,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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 16:43:44,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:44,770 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] [2024-01-31 16:43:44,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:43:44,770 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:44,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:44,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1619170640, now seen corresponding path program 2 times [2024-01-31 16:43:44,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:44,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82016986] [2024-01-31 16:43:44,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:44,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:45,198 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 16:43:45,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:45,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82016986] [2024-01-31 16:43:45,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82016986] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:45,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:45,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:43:45,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980297229] [2024-01-31 16:43:45,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:45,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:43:45,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:45,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:43:45,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:43:45,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-01-31 16:43:45,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 85 transitions, 846 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 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 16:43:45,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:45,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-01-31 16:43:45,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:45,627 INFO L124 PetriNetUnfolderBase]: 649/1235 cut-off events. [2024-01-31 16:43:45,627 INFO L125 PetriNetUnfolderBase]: For 9501/9754 co-relation queries the response was YES. [2024-01-31 16:43:45,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6022 conditions, 1235 events. 649/1235 cut-off events. For 9501/9754 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6447 event pairs, 88 based on Foata normal form. 131/1359 useless extension candidates. Maximal degree in co-relation 5997. Up to 681 conditions per place. [2024-01-31 16:43:45,636 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 64 selfloop transitions, 49 changer transitions 27/146 dead transitions. [2024-01-31 16:43:45,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 146 transitions, 1576 flow [2024-01-31 16:43:45,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:43:45,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:43:45,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-01-31 16:43:45,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-31 16:43:45,638 INFO L175 Difference]: Start difference. First operand has 87 places, 85 transitions, 846 flow. Second operand 12 states and 192 transitions. [2024-01-31 16:43:45,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 146 transitions, 1576 flow [2024-01-31 16:43:45,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 146 transitions, 1469 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-01-31 16:43:45,656 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 1046 flow [2024-01-31 16:43:45,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1046, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2024-01-31 16:43:45,656 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 52 predicate places. [2024-01-31 16:43:45,657 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 1046 flow [2024-01-31 16:43:45,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 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 16:43:45,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:45,657 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] [2024-01-31 16:43:45,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:43:45,657 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:45,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:45,658 INFO L85 PathProgramCache]: Analyzing trace with hash -487262097, now seen corresponding path program 3 times [2024-01-31 16:43:45,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:45,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064543101] [2024-01-31 16:43:45,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:45,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:46,356 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 16:43:46,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:46,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064543101] [2024-01-31 16:43:46,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064543101] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:46,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:46,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:43:46,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076356333] [2024-01-31 16:43:46,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:46,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:43:46,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:46,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:43:46,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:43:46,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-01-31 16:43:46,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 91 transitions, 1046 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 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 16:43:46,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:46,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-01-31 16:43:46,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:46,781 INFO L124 PetriNetUnfolderBase]: 630/1206 cut-off events. [2024-01-31 16:43:46,781 INFO L125 PetriNetUnfolderBase]: For 11640/11866 co-relation queries the response was YES. [2024-01-31 16:43:46,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6331 conditions, 1206 events. 630/1206 cut-off events. For 11640/11866 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6346 event pairs, 115 based on Foata normal form. 111/1309 useless extension candidates. Maximal degree in co-relation 6304. Up to 852 conditions per place. [2024-01-31 16:43:46,791 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 77 selfloop transitions, 47 changer transitions 23/153 dead transitions. [2024-01-31 16:43:46,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 153 transitions, 1799 flow [2024-01-31 16:43:46,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:43:46,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:43:46,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 198 transitions. [2024-01-31 16:43:46,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-01-31 16:43:46,793 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 1046 flow. Second operand 13 states and 198 transitions. [2024-01-31 16:43:46,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 153 transitions, 1799 flow [2024-01-31 16:43:46,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 153 transitions, 1681 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-01-31 16:43:46,820 INFO L231 Difference]: Finished difference. Result has 98 places, 102 transitions, 1269 flow [2024-01-31 16:43:46,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1269, PETRI_PLACES=98, PETRI_TRANSITIONS=102} [2024-01-31 16:43:46,821 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 58 predicate places. [2024-01-31 16:43:46,821 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 102 transitions, 1269 flow [2024-01-31 16:43:46,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 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 16:43:46,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:46,822 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] [2024-01-31 16:43:46,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 16:43:46,822 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:46,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:46,822 INFO L85 PathProgramCache]: Analyzing trace with hash -717057511, now seen corresponding path program 4 times [2024-01-31 16:43:46,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:46,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683477883] [2024-01-31 16:43:46,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:46,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:47,705 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 16:43:47,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:47,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683477883] [2024-01-31 16:43:47,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683477883] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:47,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:47,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-31 16:43:47,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175410955] [2024-01-31 16:43:47,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:47,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:43:47,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:47,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:43:47,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:43:47,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-01-31 16:43:47,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 102 transitions, 1269 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 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 16:43:47,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:47,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-01-31 16:43:47,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:48,111 INFO L124 PetriNetUnfolderBase]: 484/1007 cut-off events. [2024-01-31 16:43:48,111 INFO L125 PetriNetUnfolderBase]: For 9635/9870 co-relation queries the response was YES. [2024-01-31 16:43:48,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5260 conditions, 1007 events. 484/1007 cut-off events. For 9635/9870 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5716 event pairs, 80 based on Foata normal form. 63/1059 useless extension candidates. Maximal degree in co-relation 5229. Up to 621 conditions per place. [2024-01-31 16:43:48,127 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 71 selfloop transitions, 43 changer transitions 13/139 dead transitions. [2024-01-31 16:43:48,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 139 transitions, 1885 flow [2024-01-31 16:43:48,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:43:48,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:43:48,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-01-31 16:43:48,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-01-31 16:43:48,130 INFO L175 Difference]: Start difference. First operand has 98 places, 102 transitions, 1269 flow. Second operand 10 states and 166 transitions. [2024-01-31 16:43:48,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 139 transitions, 1885 flow [2024-01-31 16:43:48,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 139 transitions, 1771 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-01-31 16:43:48,154 INFO L231 Difference]: Finished difference. Result has 102 places, 110 transitions, 1490 flow [2024-01-31 16:43:48,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1490, PETRI_PLACES=102, PETRI_TRANSITIONS=110} [2024-01-31 16:43:48,154 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 62 predicate places. [2024-01-31 16:43:48,155 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 110 transitions, 1490 flow [2024-01-31 16:43:48,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 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 16:43:48,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:48,155 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] [2024-01-31 16:43:48,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-31 16:43:48,156 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:48,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:48,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1868223095, now seen corresponding path program 5 times [2024-01-31 16:43:48,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:48,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206354724] [2024-01-31 16:43:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:48,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:48,949 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 16:43:48,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:48,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206354724] [2024-01-31 16:43:48,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206354724] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:48,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:48,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:43:48,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592894728] [2024-01-31 16:43:48,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:48,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:43:48,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:48,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:43:48,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:43:48,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-01-31 16:43:48,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 110 transitions, 1490 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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 16:43:48,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:48,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-01-31 16:43:48,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:49,411 INFO L124 PetriNetUnfolderBase]: 518/1069 cut-off events. [2024-01-31 16:43:49,411 INFO L125 PetriNetUnfolderBase]: For 12473/12748 co-relation queries the response was YES. [2024-01-31 16:43:49,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5914 conditions, 1069 events. 518/1069 cut-off events. For 12473/12748 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6132 event pairs, 80 based on Foata normal form. 56/1115 useless extension candidates. Maximal degree in co-relation 5880. Up to 639 conditions per place. [2024-01-31 16:43:49,420 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 89 selfloop transitions, 43 changer transitions 13/157 dead transitions. [2024-01-31 16:43:49,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 157 transitions, 2265 flow [2024-01-31 16:43:49,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:43:49,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:43:49,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-01-31 16:43:49,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-01-31 16:43:49,422 INFO L175 Difference]: Start difference. First operand has 102 places, 110 transitions, 1490 flow. Second operand 11 states and 180 transitions. [2024-01-31 16:43:49,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 157 transitions, 2265 flow [2024-01-31 16:43:49,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 157 transitions, 2168 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-01-31 16:43:49,449 INFO L231 Difference]: Finished difference. Result has 109 places, 119 transitions, 1750 flow [2024-01-31 16:43:49,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1440, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1750, PETRI_PLACES=109, PETRI_TRANSITIONS=119} [2024-01-31 16:43:49,451 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 69 predicate places. [2024-01-31 16:43:49,451 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 119 transitions, 1750 flow [2024-01-31 16:43:49,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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 16:43:49,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:49,451 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] [2024-01-31 16:43:49,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-31 16:43:49,452 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:49,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:49,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1205384591, now seen corresponding path program 6 times [2024-01-31 16:43:49,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:49,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187965760] [2024-01-31 16:43:49,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:49,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:49,974 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 16:43:49,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:49,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187965760] [2024-01-31 16:43:49,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187965760] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:49,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:49,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:43:49,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044573186] [2024-01-31 16:43:49,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:49,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:43:49,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:49,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:43:49,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:43:49,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-01-31 16:43:49,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 119 transitions, 1750 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 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 16:43:49,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:49,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-01-31 16:43:49,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:50,427 INFO L124 PetriNetUnfolderBase]: 758/1432 cut-off events. [2024-01-31 16:43:50,428 INFO L125 PetriNetUnfolderBase]: For 17375/17639 co-relation queries the response was YES. [2024-01-31 16:43:50,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7991 conditions, 1432 events. 758/1432 cut-off events. For 17375/17639 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7776 event pairs, 128 based on Foata normal form. 106/1530 useless extension candidates. Maximal degree in co-relation 7955. Up to 691 conditions per place. [2024-01-31 16:43:50,436 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 64 selfloop transitions, 69 changer transitions 49/188 dead transitions. [2024-01-31 16:43:50,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 188 transitions, 2601 flow [2024-01-31 16:43:50,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:43:50,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:43:50,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-01-31 16:43:50,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-01-31 16:43:50,437 INFO L175 Difference]: Start difference. First operand has 109 places, 119 transitions, 1750 flow. Second operand 12 states and 189 transitions. [2024-01-31 16:43:50,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 188 transitions, 2601 flow [2024-01-31 16:43:50,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 188 transitions, 2494 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-01-31 16:43:50,467 INFO L231 Difference]: Finished difference. Result has 113 places, 120 transitions, 1948 flow [2024-01-31 16:43:50,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1668, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1948, PETRI_PLACES=113, PETRI_TRANSITIONS=120} [2024-01-31 16:43:50,467 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 73 predicate places. [2024-01-31 16:43:50,467 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 120 transitions, 1948 flow [2024-01-31 16:43:50,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 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 16:43:50,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:50,468 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 16:43:50,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-31 16:43:50,468 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:50,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:50,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1805142495, now seen corresponding path program 1 times [2024-01-31 16:43:50,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:50,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583116283] [2024-01-31 16:43:50,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:50,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:50,751 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 16:43:50,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:50,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583116283] [2024-01-31 16:43:50,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583116283] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:50,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:50,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:43:50,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343905472] [2024-01-31 16:43:50,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:50,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:43:50,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:50,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:43:50,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:43:50,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-01-31 16:43:50,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 120 transitions, 1948 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 16:43:50,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:50,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-01-31 16:43:50,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:51,143 INFO L124 PetriNetUnfolderBase]: 544/1179 cut-off events. [2024-01-31 16:43:51,143 INFO L125 PetriNetUnfolderBase]: For 16502/16821 co-relation queries the response was YES. [2024-01-31 16:43:51,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6858 conditions, 1179 events. 544/1179 cut-off events. For 16502/16821 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7357 event pairs, 108 based on Foata normal form. 128/1289 useless extension candidates. Maximal degree in co-relation 6820. Up to 621 conditions per place. [2024-01-31 16:43:51,152 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 84 selfloop transitions, 59 changer transitions 22/176 dead transitions. [2024-01-31 16:43:51,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 176 transitions, 2807 flow [2024-01-31 16:43:51,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:43:51,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:43:51,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 217 transitions. [2024-01-31 16:43:51,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636752136752137 [2024-01-31 16:43:51,154 INFO L175 Difference]: Start difference. First operand has 113 places, 120 transitions, 1948 flow. Second operand 13 states and 217 transitions. [2024-01-31 16:43:51,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 176 transitions, 2807 flow [2024-01-31 16:43:51,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 176 transitions, 2701 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-01-31 16:43:51,186 INFO L231 Difference]: Finished difference. Result has 117 places, 131 transitions, 2272 flow [2024-01-31 16:43:51,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2272, PETRI_PLACES=117, PETRI_TRANSITIONS=131} [2024-01-31 16:43:51,187 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 77 predicate places. [2024-01-31 16:43:51,187 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 131 transitions, 2272 flow [2024-01-31 16:43:51,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 16:43:51,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:51,187 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 16:43:51,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-31 16:43:51,188 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:51,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:51,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1107370369, now seen corresponding path program 2 times [2024-01-31 16:43:51,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:51,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748506603] [2024-01-31 16:43:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:51,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:51,521 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 16:43:51,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:51,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748506603] [2024-01-31 16:43:51,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748506603] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:51,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:51,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:43:51,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379076195] [2024-01-31 16:43:51,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:51,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:43:51,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:51,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:43:51,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:43:51,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-01-31 16:43:51,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 131 transitions, 2272 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 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 16:43:51,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:51,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-01-31 16:43:51,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:51,922 INFO L124 PetriNetUnfolderBase]: 815/1579 cut-off events. [2024-01-31 16:43:51,922 INFO L125 PetriNetUnfolderBase]: For 24907/25253 co-relation queries the response was YES. [2024-01-31 16:43:51,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9568 conditions, 1579 events. 815/1579 cut-off events. For 24907/25253 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9298 event pairs, 100 based on Foata normal form. 191/1760 useless extension candidates. Maximal degree in co-relation 9530. Up to 502 conditions per place. [2024-01-31 16:43:51,932 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 59 selfloop transitions, 27 changer transitions 118/215 dead transitions. [2024-01-31 16:43:51,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 215 transitions, 3554 flow [2024-01-31 16:43:51,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:43:51,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:43:51,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-01-31 16:43:51,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-01-31 16:43:51,933 INFO L175 Difference]: Start difference. First operand has 117 places, 131 transitions, 2272 flow. Second operand 10 states and 180 transitions. [2024-01-31 16:43:51,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 215 transitions, 3554 flow [2024-01-31 16:43:51,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 215 transitions, 3497 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-01-31 16:43:51,971 INFO L231 Difference]: Finished difference. Result has 124 places, 89 transitions, 1495 flow [2024-01-31 16:43:51,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2217, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1495, PETRI_PLACES=124, PETRI_TRANSITIONS=89} [2024-01-31 16:43:51,971 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 84 predicate places. [2024-01-31 16:43:51,972 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 89 transitions, 1495 flow [2024-01-31 16:43:51,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 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 16:43:51,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:51,972 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 16:43:51,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-31 16:43:51,972 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:51,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:51,973 INFO L85 PathProgramCache]: Analyzing trace with hash -899647447, now seen corresponding path program 1 times [2024-01-31 16:43:51,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:51,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111217625] [2024-01-31 16:43:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:51,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:52,469 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 16:43:52,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:52,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111217625] [2024-01-31 16:43:52,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111217625] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:52,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:52,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:43:52,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053357862] [2024-01-31 16:43:52,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:52,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:43:52,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:52,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:43:52,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:43:52,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-01-31 16:43:52,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 89 transitions, 1495 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 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 16:43:52,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:52,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-01-31 16:43:52,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:52,931 INFO L124 PetriNetUnfolderBase]: 249/589 cut-off events. [2024-01-31 16:43:52,931 INFO L125 PetriNetUnfolderBase]: For 9079/9184 co-relation queries the response was YES. [2024-01-31 16:43:52,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3635 conditions, 589 events. 249/589 cut-off events. For 9079/9184 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3123 event pairs, 65 based on Foata normal form. 59/644 useless extension candidates. Maximal degree in co-relation 3593. Up to 171 conditions per place. [2024-01-31 16:43:52,936 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 56 selfloop transitions, 40 changer transitions 30/136 dead transitions. [2024-01-31 16:43:52,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 136 transitions, 2172 flow [2024-01-31 16:43:52,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:43:52,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:43:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 208 transitions. [2024-01-31 16:43:52,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-31 16:43:52,937 INFO L175 Difference]: Start difference. First operand has 124 places, 89 transitions, 1495 flow. Second operand 13 states and 208 transitions. [2024-01-31 16:43:52,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 136 transitions, 2172 flow [2024-01-31 16:43:52,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 136 transitions, 1899 flow, removed 80 selfloop flow, removed 14 redundant places. [2024-01-31 16:43:52,956 INFO L231 Difference]: Finished difference. Result has 119 places, 84 transitions, 1350 flow [2024-01-31 16:43:52,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1350, PETRI_PLACES=119, PETRI_TRANSITIONS=84} [2024-01-31 16:43:52,957 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 79 predicate places. [2024-01-31 16:43:52,957 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 84 transitions, 1350 flow [2024-01-31 16:43:52,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 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 16:43:52,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:52,957 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 16:43:52,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-31 16:43:52,958 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:52,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:52,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1820660173, now seen corresponding path program 3 times [2024-01-31 16:43:52,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:52,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662577228] [2024-01-31 16:43:52,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:52,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:53,530 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 16:43:53,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:53,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662577228] [2024-01-31 16:43:53,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662577228] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:53,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:53,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-31 16:43:53,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362041786] [2024-01-31 16:43:53,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:53,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:43:53,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:53,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:43:53,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:43:53,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-01-31 16:43:53,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 84 transitions, 1350 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 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 16:43:53,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:53,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-01-31 16:43:53,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:54,046 INFO L124 PetriNetUnfolderBase]: 227/557 cut-off events. [2024-01-31 16:43:54,047 INFO L125 PetriNetUnfolderBase]: For 7996/8059 co-relation queries the response was YES. [2024-01-31 16:43:54,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3339 conditions, 557 events. 227/557 cut-off events. For 7996/8059 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3003 event pairs, 32 based on Foata normal form. 33/585 useless extension candidates. Maximal degree in co-relation 3299. Up to 152 conditions per place. [2024-01-31 16:43:54,051 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 57 selfloop transitions, 40 changer transitions 29/136 dead transitions. [2024-01-31 16:43:54,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 136 transitions, 1983 flow [2024-01-31 16:43:54,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 16:43:54,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 16:43:54,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 225 transitions. [2024-01-31 16:43:54,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-01-31 16:43:54,053 INFO L175 Difference]: Start difference. First operand has 119 places, 84 transitions, 1350 flow. Second operand 14 states and 225 transitions. [2024-01-31 16:43:54,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 136 transitions, 1983 flow [2024-01-31 16:43:54,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 136 transitions, 1837 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-01-31 16:43:54,069 INFO L231 Difference]: Finished difference. Result has 125 places, 82 transitions, 1312 flow [2024-01-31 16:43:54,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1312, PETRI_PLACES=125, PETRI_TRANSITIONS=82} [2024-01-31 16:43:54,070 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 85 predicate places. [2024-01-31 16:43:54,070 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 82 transitions, 1312 flow [2024-01-31 16:43:54,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 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 16:43:54,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:54,072 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] [2024-01-31 16:43:54,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-31 16:43:54,072 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:54,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:54,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1724020560, now seen corresponding path program 1 times [2024-01-31 16:43:54,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:54,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383657336] [2024-01-31 16:43:54,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:54,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:54,862 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 16:43:54,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:54,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383657336] [2024-01-31 16:43:54,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383657336] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:54,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:54,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-01-31 16:43:54,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154575388] [2024-01-31 16:43:54,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:54,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-31 16:43:54,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:54,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-31 16:43:54,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-01-31 16:43:54,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-01-31 16:43:54,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 82 transitions, 1312 flow. Second operand has 13 states, 13 states have (on average 11.384615384615385) internal successors, (148), 13 states have internal predecessors, (148), 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 16:43:54,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:54,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-01-31 16:43:54,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:55,188 INFO L124 PetriNetUnfolderBase]: 172/448 cut-off events. [2024-01-31 16:43:55,189 INFO L125 PetriNetUnfolderBase]: For 5718/5754 co-relation queries the response was YES. [2024-01-31 16:43:55,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2671 conditions, 448 events. 172/448 cut-off events. For 5718/5754 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2323 event pairs, 55 based on Foata normal form. 24/468 useless extension candidates. Maximal degree in co-relation 2630. Up to 209 conditions per place. [2024-01-31 16:43:55,194 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 50 selfloop transitions, 25 changer transitions 17/102 dead transitions. [2024-01-31 16:43:55,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 102 transitions, 1572 flow [2024-01-31 16:43:55,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:43:55,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:43:55,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-01-31 16:43:55,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382716049382716 [2024-01-31 16:43:55,196 INFO L175 Difference]: Start difference. First operand has 125 places, 82 transitions, 1312 flow. Second operand 9 states and 142 transitions. [2024-01-31 16:43:55,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 102 transitions, 1572 flow [2024-01-31 16:43:55,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 102 transitions, 1395 flow, removed 52 selfloop flow, removed 12 redundant places. [2024-01-31 16:43:55,222 INFO L231 Difference]: Finished difference. Result has 121 places, 75 transitions, 1062 flow [2024-01-31 16:43:55,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1062, PETRI_PLACES=121, PETRI_TRANSITIONS=75} [2024-01-31 16:43:55,223 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 81 predicate places. [2024-01-31 16:43:55,223 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 75 transitions, 1062 flow [2024-01-31 16:43:55,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.384615384615385) internal successors, (148), 13 states have internal predecessors, (148), 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 16:43:55,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:55,223 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] [2024-01-31 16:43:55,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-31 16:43:55,223 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-01-31 16:43:55,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:55,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1496113558, now seen corresponding path program 2 times [2024-01-31 16:43:55,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:55,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619532684] [2024-01-31 16:43:55,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:55,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:55,906 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 16:43:55,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:55,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619532684] [2024-01-31 16:43:55,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619532684] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:55,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:55,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-31 16:43:55,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994590410] [2024-01-31 16:43:55,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:55,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:43:55,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:55,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:43:55,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:43:55,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-01-31 16:43:55,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 75 transitions, 1062 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 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 16:43:55,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:55,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-01-31 16:43:55,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:56,176 INFO L124 PetriNetUnfolderBase]: 183/399 cut-off events. [2024-01-31 16:43:56,176 INFO L125 PetriNetUnfolderBase]: For 3387/3387 co-relation queries the response was YES. [2024-01-31 16:43:56,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 399 events. 183/399 cut-off events. For 3387/3387 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1746 event pairs, 18 based on Foata normal form. 9/404 useless extension candidates. Maximal degree in co-relation 2202. Up to 194 conditions per place. [2024-01-31 16:43:56,178 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 0 selfloop transitions, 0 changer transitions 90/90 dead transitions. [2024-01-31 16:43:56,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 90 transitions, 1292 flow [2024-01-31 16:43:56,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:43:56,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:43:56,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-01-31 16:43:56,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376984126984127 [2024-01-31 16:43:56,187 INFO L175 Difference]: Start difference. First operand has 121 places, 75 transitions, 1062 flow. Second operand 7 states and 95 transitions. [2024-01-31 16:43:56,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 90 transitions, 1292 flow [2024-01-31 16:43:56,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 90 transitions, 1140 flow, removed 16 selfloop flow, removed 17 redundant places. [2024-01-31 16:43:56,195 INFO L231 Difference]: Finished difference. Result has 101 places, 0 transitions, 0 flow [2024-01-31 16:43:56,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=101, PETRI_TRANSITIONS=0} [2024-01-31 16:43:56,195 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 61 predicate places. [2024-01-31 16:43:56,196 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 0 transitions, 0 flow [2024-01-31 16:43:56,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 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 16:43:56,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 8 remaining) [2024-01-31 16:43:56,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2024-01-31 16:43:56,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 8 remaining) [2024-01-31 16:43:56,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2024-01-31 16:43:56,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2024-01-31 16:43:56,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-01-31 16:43:56,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 8 remaining) [2024-01-31 16:43:56,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2024-01-31 16:43:56,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-01-31 16:43:56,200 INFO L445 BasicCegarLoop]: Path program histogram: [6, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:56,205 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:43:56,205 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:43:56,208 INFO L503 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-01-31 16:43:56,208 INFO L504 ceAbstractionStarter]: WitnessConsidered=2 [2024-01-31 16:43:56,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:43:56 BasicIcfg [2024-01-31 16:43:56,209 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:43:56,209 INFO L158 Benchmark]: Toolchain (without parser) took 22747.32ms. Allocated memory was 165.7MB in the beginning and 784.3MB in the end (delta: 618.7MB). Free memory was 88.8MB in the beginning and 340.0MB in the end (delta: -251.2MB). Peak memory consumption was 368.5MB. Max. memory is 16.1GB. [2024-01-31 16:43:56,209 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 113.2MB. Free memory was 75.4MB in the beginning and 75.3MB in the end (delta: 88.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:43:56,209 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 165.7MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:43:56,210 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2457.26ms. Allocated memory was 165.7MB in the beginning and 398.5MB in the end (delta: 232.8MB). Free memory was 88.8MB in the beginning and 221.3MB in the end (delta: -132.4MB). Peak memory consumption was 161.9MB. Max. memory is 16.1GB. [2024-01-31 16:43:56,210 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.77ms. Allocated memory is still 398.5MB. Free memory was 221.3MB in the beginning and 218.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-31 16:43:56,210 INFO L158 Benchmark]: Boogie Preprocessor took 50.48ms. Allocated memory is still 398.5MB. Free memory was 218.1MB in the beginning and 213.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-31 16:43:56,210 INFO L158 Benchmark]: RCFGBuilder took 680.14ms. Allocated memory is still 398.5MB. Free memory was 213.9MB in the beginning and 151.0MB in the end (delta: 62.9MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2024-01-31 16:43:56,210 INFO L158 Benchmark]: TraceAbstraction took 19494.48ms. Allocated memory was 398.5MB in the beginning and 784.3MB in the end (delta: 385.9MB). Free memory was 150.0MB in the beginning and 340.0MB in the end (delta: -190.1MB). Peak memory consumption was 196.9MB. Max. memory is 16.1GB. [2024-01-31 16:43:56,211 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 113.2MB. Free memory was 75.4MB in the beginning and 75.3MB in the end (delta: 88.5kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 165.7MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2457.26ms. Allocated memory was 165.7MB in the beginning and 398.5MB in the end (delta: 232.8MB). Free memory was 88.8MB in the beginning and 221.3MB in the end (delta: -132.4MB). Peak memory consumption was 161.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.77ms. Allocated memory is still 398.5MB. Free memory was 221.3MB in the beginning and 218.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.48ms. Allocated memory is still 398.5MB. Free memory was 218.1MB in the beginning and 213.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 680.14ms. Allocated memory is still 398.5MB. Free memory was 213.9MB in the beginning and 151.0MB in the end (delta: 62.9MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * TraceAbstraction took 19494.48ms. Allocated memory was 398.5MB in the beginning and 784.3MB in the end (delta: 385.9MB). Free memory was 150.0MB in the beginning and 340.0MB in the end (delta: -190.1MB). Peak memory consumption was 196.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.4s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1506 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1408 mSDsluCounter, 1607 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1491 mSDsCounter, 458 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4300 IncrementalHoareTripleChecker+Invalid, 4758 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 458 mSolverCounterUnsat, 116 mSDtfsCounter, 4300 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 290 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2272occurred in iteration=17, InterpolantAutomatonStates: 216, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 433 NumberOfCodeBlocks, 433 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 411 ConstructedInterpolants, 0 QuantifiedInterpolants, 5295 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-31 16:43:56,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE