./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix013.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix013.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix013.oepc.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix013.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 17:34:36,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:34:36,541 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:34:36,546 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:34:36,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:34:36,576 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:34:36,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:34:36,577 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:34:36,578 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:34:36,582 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:34:36,582 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:34:36,582 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:34:36,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:34:36,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:34:36,585 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:34:36,585 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:34:36,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:34:36,586 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:34:36,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:34:36,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:34:36,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:34:36,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:34:36,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:34:36,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:34:36,588 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:34:36,588 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:34:36,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:34:36,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:34:36,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:34:36,590 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:34:36,591 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:34:36,591 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:34:36,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:34:36,591 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:34:36,592 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:34:36,592 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:34:36,592 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:34:36,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:34:36,592 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:34:36,593 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:34:36,593 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:34:36,593 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:34:36,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:34:36,594 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:34:36,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:34:36,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:34:36,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:34:36,905 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:34:36,906 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:34:36,907 INFO L431 ainManager$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/mix013.oepc.yml/witness.yml [2024-01-31 17:34:37,776 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:34:37,777 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:34:37,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix013.oepc.i [2024-01-31 17:34:39,066 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:34:39,381 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:34:39,382 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix013.oepc.i [2024-01-31 17:34:39,397 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee899650a/419379e80d294389b39117b7a4c28c2f/FLAGdc7a754d1 [2024-01-31 17:34:39,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee899650a/419379e80d294389b39117b7a4c28c2f [2024-01-31 17:34:39,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:34:39,414 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:34:39,415 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:34:39,415 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:34:39,420 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:34:39,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:34:37" (1/2) ... [2024-01-31 17:34:39,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e264e4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:34:39, skipping insertion in model container [2024-01-31 17:34:39,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:34:37" (1/2) ... [2024-01-31 17:34:39,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@360b60c5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:34:39, skipping insertion in model container [2024-01-31 17:34:39,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:34:39" (2/2) ... [2024-01-31 17:34:39,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e264e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:34:39, skipping insertion in model container [2024-01-31 17:34:39,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:34:39" (2/2) ... [2024-01-31 17:34:39,424 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:34:41,677 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:34:41,678 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 17:34:41,678 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 17:34:41,735 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:34:41,920 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/mix013.oepc.i[945,958] [2024-01-31 17:34:42,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:34:42,188 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:34:42,204 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/mix013.oepc.i[945,958] Start Parsing Local [2024-01-31 17:34:42,227 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 17:34:42,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:34:42,302 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:34:42,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:34:42 WrapperNode [2024-01-31 17:34:42,303 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:34:42,304 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:34:42,304 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:34:42,304 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:34:42,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:34:42" (1/1) ... [2024-01-31 17:34:42,340 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:34:42" (1/1) ... [2024-01-31 17:34:42,381 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 148 [2024-01-31 17:34:42,381 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:34:42,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:34:42,382 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:34:42,382 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:34:42,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:34:42" (1/1) ... [2024-01-31 17:34:42,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:34:42" (1/1) ... [2024-01-31 17:34:42,412 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:34:42" (1/1) ... [2024-01-31 17:34:42,437 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-31 17:34:42,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:34:42" (1/1) ... [2024-01-31 17:34:42,440 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:34:42" (1/1) ... [2024-01-31 17:34:42,450 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:34:42" (1/1) ... [2024-01-31 17:34:42,461 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:34:42" (1/1) ... [2024-01-31 17:34:42,463 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:34:42" (1/1) ... [2024-01-31 17:34:42,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:34:42" (1/1) ... [2024-01-31 17:34:42,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:34:42,478 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:34:42,479 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:34:42,479 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:34:42,480 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:34:42" (1/1) ... [2024-01-31 17:34:42,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:34:42,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:34:42,514 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 17:34:42,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 17:34:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:34:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:34:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:34:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:34:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:34:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:34:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:34:42,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:34:42,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:34:42,549 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 17:34:42,549 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 17:34:42,549 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 17:34:42,549 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 17:34:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 17:34:42,550 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 17:34:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-31 17:34:42,550 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-31 17:34:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:34:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:34:42,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:34:42,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:34:42,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:34:42,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:34:42,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:34:42,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:34:42,553 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:34:42,709 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:34:42,711 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:34:43,052 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:34:43,053 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:34:43,213 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:34:43,213 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:34:43,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:34:43 BoogieIcfgContainer [2024-01-31 17:34:43,214 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:34:43,216 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:34:43,216 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:34:43,219 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:34:43,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:34:37" (1/4) ... [2024-01-31 17:34:43,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d3fbbb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:34:43, skipping insertion in model container [2024-01-31 17:34:43,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:34:39" (2/4) ... [2024-01-31 17:34:43,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d3fbbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:34:43, skipping insertion in model container [2024-01-31 17:34:43,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:34:42" (3/4) ... [2024-01-31 17:34:43,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d3fbbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:34:43, skipping insertion in model container [2024-01-31 17:34:43,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:34:43" (4/4) ... [2024-01-31 17:34:43,222 INFO L112 eAbstractionObserver]: Analyzing ICFG mix013.oepc.i [2024-01-31 17:34:43,237 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:34:43,238 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 17:34:43,238 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:34:43,281 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:34:43,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:34:43,334 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-01-31 17:34:43,334 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:34:43,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 1/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-01-31 17:34:43,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:34:43,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 49 transitions, 110 flow [2024-01-31 17:34:43,348 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:34:43,354 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;@421f4716, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:34:43,355 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-01-31 17:34:43,358 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:34:43,358 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-31 17:34:43,358 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:34:43,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:43,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:34:43,360 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:34:43,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:43,365 INFO L85 PathProgramCache]: Analyzing trace with hash 12737626, now seen corresponding path program 1 times [2024-01-31 17:34:43,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:43,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5165682] [2024-01-31 17:34:43,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:43,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:34:43,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:43,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5165682] [2024-01-31 17:34:43,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5165682] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:43,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:43,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:34:43,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746856931] [2024-01-31 17:34:43,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:43,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:34:43,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:43,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:34:43,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:34:43,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-01-31 17:34:43,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 110 flow. Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:43,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:43,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-01-31 17:34:43,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:44,643 INFO L124 PetriNetUnfolderBase]: 3179/5513 cut-off events. [2024-01-31 17:34:44,643 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:34:44,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10041 conditions, 5513 events. 3179/5513 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 41795 event pairs, 3179 based on Foata normal form. 135/5004 useless extension candidates. Maximal degree in co-relation 10029. Up to 4391 conditions per place. [2024-01-31 17:34:44,696 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 24 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-01-31 17:34:44,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 154 flow [2024-01-31 17:34:44,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:34:44,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:34:44,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-01-31 17:34:44,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2024-01-31 17:34:44,709 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 110 flow. Second operand 2 states and 80 transitions. [2024-01-31 17:34:44,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 154 flow [2024-01-31 17:34:44,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 150 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:34:44,716 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 102 flow [2024-01-31 17:34:44,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-01-31 17:34:44,721 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2024-01-31 17:34:44,721 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 102 flow [2024-01-31 17:34:44,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:44,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:44,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:34:44,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:34:44,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:34:44,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:44,723 INFO L85 PathProgramCache]: Analyzing trace with hash 12737627, now seen corresponding path program 1 times [2024-01-31 17:34:44,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:44,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517556362] [2024-01-31 17:34:44,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:44,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:44,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:34:44,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:44,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517556362] [2024-01-31 17:34:44,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517556362] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:44,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:44,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:34:44,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838520702] [2024-01-31 17:34:44,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:44,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:34:44,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:44,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:34:44,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:34:44,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-01-31 17:34:44,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:44,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:44,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-01-31 17:34:44,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:45,695 INFO L124 PetriNetUnfolderBase]: 2495/4173 cut-off events. [2024-01-31 17:34:45,695 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:34:45,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7746 conditions, 4173 events. 2495/4173 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 29909 event pairs, 443 based on Foata normal form. 0/4078 useless extension candidates. Maximal degree in co-relation 7743. Up to 2779 conditions per place. [2024-01-31 17:34:45,722 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 37 selfloop transitions, 2 changer transitions 2/64 dead transitions. [2024-01-31 17:34:45,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 224 flow [2024-01-31 17:34:45,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:34:45,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:34:45,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-01-31 17:34:45,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7735849056603774 [2024-01-31 17:34:45,729 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 102 flow. Second operand 3 states and 123 transitions. [2024-01-31 17:34:45,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 224 flow [2024-01-31 17:34:45,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:34:45,737 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 102 flow [2024-01-31 17:34:45,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2024-01-31 17:34:45,739 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-01-31 17:34:45,739 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 102 flow [2024-01-31 17:34:45,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:45,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:45,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:34:45,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:34:45,740 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:34:45,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:45,741 INFO L85 PathProgramCache]: Analyzing trace with hash 311053182, now seen corresponding path program 1 times [2024-01-31 17:34:45,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:45,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402835710] [2024-01-31 17:34:45,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:45,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:34:45,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:45,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402835710] [2024-01-31 17:34:45,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402835710] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:45,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:45,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:34:45,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342018694] [2024-01-31 17:34:45,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:45,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:34:45,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:45,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:34:45,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:34:45,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-01-31 17:34:45,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:45,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:45,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-01-31 17:34:45,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:46,598 INFO L124 PetriNetUnfolderBase]: 3311/5215 cut-off events. [2024-01-31 17:34:46,598 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-01-31 17:34:46,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10208 conditions, 5215 events. 3311/5215 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 35770 event pairs, 2495 based on Foata normal form. 0/4929 useless extension candidates. Maximal degree in co-relation 10204. Up to 3465 conditions per place. [2024-01-31 17:34:46,636 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 33 selfloop transitions, 1 changer transitions 1/54 dead transitions. [2024-01-31 17:34:46,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 192 flow [2024-01-31 17:34:46,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:34:46,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:34:46,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-01-31 17:34:46,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.660377358490566 [2024-01-31 17:34:46,639 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 102 flow. Second operand 3 states and 105 transitions. [2024-01-31 17:34:46,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 192 flow [2024-01-31 17:34:46,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:34:46,641 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 96 flow [2024-01-31 17:34:46,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2024-01-31 17:34:46,642 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-01-31 17:34:46,642 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 96 flow [2024-01-31 17:34:46,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:46,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:46,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:34:46,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:34:46,643 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:34:46,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:46,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1052714476, now seen corresponding path program 1 times [2024-01-31 17:34:46,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:46,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873622955] [2024-01-31 17:34:46,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:46,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:46,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:34:46,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:46,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873622955] [2024-01-31 17:34:46,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873622955] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:46,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:46,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:34:46,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558866896] [2024-01-31 17:34:46,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:46,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:34:46,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:46,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:34:46,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:34:46,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-01-31 17:34:46,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:46,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:46,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-01-31 17:34:46,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:49,483 INFO L124 PetriNetUnfolderBase]: 15279/22035 cut-off events. [2024-01-31 17:34:49,484 INFO L125 PetriNetUnfolderBase]: For 498/498 co-relation queries the response was YES. [2024-01-31 17:34:49,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43331 conditions, 22035 events. 15279/22035 cut-off events. For 498/498 co-relation queries the response was YES. Maximal size of possible extension queue 1055. Compared 147243 event pairs, 10535 based on Foata normal form. 500/22514 useless extension candidates. Maximal degree in co-relation 43327. Up to 16851 conditions per place. [2024-01-31 17:34:49,625 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 39 selfloop transitions, 5 changer transitions 43/100 dead transitions. [2024-01-31 17:34:49,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 390 flow [2024-01-31 17:34:49,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:34:49,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:34:49,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-01-31 17:34:49,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606469002695418 [2024-01-31 17:34:49,628 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 96 flow. Second operand 7 states and 208 transitions. [2024-01-31 17:34:49,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 390 flow [2024-01-31 17:34:49,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 100 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:34:49,725 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 152 flow [2024-01-31 17:34:49,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=152, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2024-01-31 17:34:49,727 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2024-01-31 17:34:49,727 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 152 flow [2024-01-31 17:34:49,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:49,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:49,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:34:49,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:34:49,729 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:34:49,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:49,730 INFO L85 PathProgramCache]: Analyzing trace with hash 336926926, now seen corresponding path program 1 times [2024-01-31 17:34:49,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:49,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001533418] [2024-01-31 17:34:49,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:49,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:49,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:34:49,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:49,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001533418] [2024-01-31 17:34:49,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001533418] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:49,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:49,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:34:49,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089656994] [2024-01-31 17:34:49,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:49,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:34:49,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:49,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:34:49,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:34:50,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-01-31 17:34:50,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:50,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:50,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-01-31 17:34:50,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:52,164 INFO L124 PetriNetUnfolderBase]: 14001/20026 cut-off events. [2024-01-31 17:34:52,164 INFO L125 PetriNetUnfolderBase]: For 18670/18676 co-relation queries the response was YES. [2024-01-31 17:34:52,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53636 conditions, 20026 events. 14001/20026 cut-off events. For 18670/18676 co-relation queries the response was YES. Maximal size of possible extension queue 927. Compared 128913 event pairs, 2441 based on Foata normal form. 490/20368 useless extension candidates. Maximal degree in co-relation 53627. Up to 13121 conditions per place. [2024-01-31 17:34:52,309 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 45 selfloop transitions, 3 changer transitions 55/116 dead transitions. [2024-01-31 17:34:52,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 116 transitions, 608 flow [2024-01-31 17:34:52,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:34:52,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:34:52,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-01-31 17:34:52,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5929919137466307 [2024-01-31 17:34:52,313 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 152 flow. Second operand 7 states and 220 transitions. [2024-01-31 17:34:52,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 116 transitions, 608 flow [2024-01-31 17:34:52,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 116 transitions, 595 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-31 17:34:52,541 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 162 flow [2024-01-31 17:34:52,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2024-01-31 17:34:52,544 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 8 predicate places. [2024-01-31 17:34:52,544 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 162 flow [2024-01-31 17:34:52,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:52,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:52,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:34:52,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:34:52,545 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:34:52,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:52,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1700643705, now seen corresponding path program 1 times [2024-01-31 17:34:52,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:52,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706067550] [2024-01-31 17:34:52,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:52,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:34:52,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:52,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706067550] [2024-01-31 17:34:52,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706067550] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:52,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:52,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:34:52,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855081581] [2024-01-31 17:34:52,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:52,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:34:52,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:52,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:34:52,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:34:52,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-01-31 17:34:52,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:52,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:52,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-01-31 17:34:52,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:54,147 INFO L124 PetriNetUnfolderBase]: 8200/12635 cut-off events. [2024-01-31 17:34:54,147 INFO L125 PetriNetUnfolderBase]: For 9475/9766 co-relation queries the response was YES. [2024-01-31 17:34:54,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31190 conditions, 12635 events. 8200/12635 cut-off events. For 9475/9766 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 88326 event pairs, 2569 based on Foata normal form. 320/12542 useless extension candidates. Maximal degree in co-relation 31178. Up to 7750 conditions per place. [2024-01-31 17:34:54,220 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 39 selfloop transitions, 3 changer transitions 41/103 dead transitions. [2024-01-31 17:34:54,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 103 transitions, 472 flow [2024-01-31 17:34:54,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:34:54,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:34:54,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 231 transitions. [2024-01-31 17:34:54,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-01-31 17:34:54,222 INFO L175 Difference]: Start difference. First operand has 69 places, 47 transitions, 162 flow. Second operand 7 states and 231 transitions. [2024-01-31 17:34:54,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 103 transitions, 472 flow [2024-01-31 17:34:54,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 103 transitions, 450 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-01-31 17:34:54,357 INFO L231 Difference]: Finished difference. Result has 70 places, 47 transitions, 167 flow [2024-01-31 17:34:54,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=167, PETRI_PLACES=70, PETRI_TRANSITIONS=47} [2024-01-31 17:34:54,358 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 9 predicate places. [2024-01-31 17:34:54,358 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 47 transitions, 167 flow [2024-01-31 17:34:54,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:54,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:54,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:34:54,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:34:54,359 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:34:54,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:54,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1844558653, now seen corresponding path program 1 times [2024-01-31 17:34:54,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:54,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531627379] [2024-01-31 17:34:54,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:54,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:54,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:34:54,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:54,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531627379] [2024-01-31 17:34:54,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531627379] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:54,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:54,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:34:54,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122753531] [2024-01-31 17:34:54,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:54,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:34:54,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:54,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:34:54,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:34:54,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:34:54,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 47 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:54,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:54,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:34:54,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:56,294 INFO L124 PetriNetUnfolderBase]: 12824/19672 cut-off events. [2024-01-31 17:34:56,294 INFO L125 PetriNetUnfolderBase]: For 8432/8683 co-relation queries the response was YES. [2024-01-31 17:34:56,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44312 conditions, 19672 events. 12824/19672 cut-off events. For 8432/8683 co-relation queries the response was YES. Maximal size of possible extension queue 1090. Compared 142835 event pairs, 2296 based on Foata normal form. 683/19598 useless extension candidates. Maximal degree in co-relation 44299. Up to 9128 conditions per place. [2024-01-31 17:34:56,429 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 53 selfloop transitions, 6 changer transitions 0/79 dead transitions. [2024-01-31 17:34:56,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 79 transitions, 355 flow [2024-01-31 17:34:56,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:34:56,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:34:56,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-01-31 17:34:56,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028301886792453 [2024-01-31 17:34:56,431 INFO L175 Difference]: Start difference. First operand has 70 places, 47 transitions, 167 flow. Second operand 4 states and 149 transitions. [2024-01-31 17:34:56,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 79 transitions, 355 flow [2024-01-31 17:34:56,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 79 transitions, 341 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-31 17:34:56,653 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 199 flow [2024-01-31 17:34:56,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-01-31 17:34:56,654 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2024-01-31 17:34:56,654 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 199 flow [2024-01-31 17:34:56,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:56,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:56,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:34:56,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:34:56,655 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:34:56,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:56,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1856568484, now seen corresponding path program 1 times [2024-01-31 17:34:56,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:56,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294796840] [2024-01-31 17:34:56,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:56,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:34:56,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:56,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294796840] [2024-01-31 17:34:56,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294796840] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:56,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:56,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:34:56,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551517663] [2024-01-31 17:34:56,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:56,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:34:56,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:56,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:34:56,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:34:56,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:34:56,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 199 flow. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:56,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:56,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:34:56,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:58,438 INFO L124 PetriNetUnfolderBase]: 10876/16592 cut-off events. [2024-01-31 17:34:58,438 INFO L125 PetriNetUnfolderBase]: For 6160/6313 co-relation queries the response was YES. [2024-01-31 17:34:58,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40301 conditions, 16592 events. 10876/16592 cut-off events. For 6160/6313 co-relation queries the response was YES. Maximal size of possible extension queue 882. Compared 115076 event pairs, 1485 based on Foata normal form. 602/16533 useless extension candidates. Maximal degree in co-relation 40290. Up to 5576 conditions per place. [2024-01-31 17:34:58,528 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 69 selfloop transitions, 10 changer transitions 0/99 dead transitions. [2024-01-31 17:34:58,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 99 transitions, 480 flow [2024-01-31 17:34:58,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:34:58,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:34:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-01-31 17:34:58,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.720754716981132 [2024-01-31 17:34:58,530 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 199 flow. Second operand 5 states and 191 transitions. [2024-01-31 17:34:58,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 99 transitions, 480 flow [2024-01-31 17:34:58,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 99 transitions, 477 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:34:58,536 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 264 flow [2024-01-31 17:34:58,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2024-01-31 17:34:58,536 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 9 predicate places. [2024-01-31 17:34:58,537 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 264 flow [2024-01-31 17:34:58,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:58,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:58,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:34:58,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:34:58,538 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:34:58,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:58,538 INFO L85 PathProgramCache]: Analyzing trace with hash -953138820, now seen corresponding path program 1 times [2024-01-31 17:34:58,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:58,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057271296] [2024-01-31 17:34:58,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:58,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:58,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:34:58,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:58,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057271296] [2024-01-31 17:34:58,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057271296] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:58,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:58,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:34:58,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061307066] [2024-01-31 17:34:58,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:58,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:34:58,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:58,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:34:58,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:34:58,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:34:58,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:58,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:58,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:34:58,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:00,168 INFO L124 PetriNetUnfolderBase]: 8792/13080 cut-off events. [2024-01-31 17:35:00,169 INFO L125 PetriNetUnfolderBase]: For 12665/12742 co-relation queries the response was YES. [2024-01-31 17:35:00,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35606 conditions, 13080 events. 8792/13080 cut-off events. For 12665/12742 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 84127 event pairs, 1139 based on Foata normal form. 364/12845 useless extension candidates. Maximal degree in co-relation 35593. Up to 4412 conditions per place. [2024-01-31 17:35:00,226 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 83 selfloop transitions, 14 changer transitions 0/117 dead transitions. [2024-01-31 17:35:00,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 117 transitions, 627 flow [2024-01-31 17:35:00,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:35:00,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:35:00,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-01-31 17:35:00,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7264150943396226 [2024-01-31 17:35:00,229 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 264 flow. Second operand 6 states and 231 transitions. [2024-01-31 17:35:00,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 117 transitions, 627 flow [2024-01-31 17:35:00,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 117 transitions, 611 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-31 17:35:00,239 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 334 flow [2024-01-31 17:35:00,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-01-31 17:35:00,240 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 14 predicate places. [2024-01-31 17:35:00,240 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 334 flow [2024-01-31 17:35:00,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:00,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:00,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:00,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:35:00,241 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:00,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:00,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1571332275, now seen corresponding path program 1 times [2024-01-31 17:35:00,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:00,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273266772] [2024-01-31 17:35:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:00,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:01,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:01,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273266772] [2024-01-31 17:35:01,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273266772] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:01,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:01,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:35:01,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561087925] [2024-01-31 17:35:01,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:01,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:35:01,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:01,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:35:01,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:35:01,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:35:01,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 334 flow. Second operand has 9 states, 9 states have (on average 24.22222222222222) internal successors, (218), 9 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:01,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:01,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:35:01,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:03,194 INFO L124 PetriNetUnfolderBase]: 10298/17653 cut-off events. [2024-01-31 17:35:03,194 INFO L125 PetriNetUnfolderBase]: For 24372/28904 co-relation queries the response was YES. [2024-01-31 17:35:03,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49242 conditions, 17653 events. 10298/17653 cut-off events. For 24372/28904 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 146687 event pairs, 3177 based on Foata normal form. 398/16352 useless extension candidates. Maximal degree in co-relation 49227. Up to 5387 conditions per place. [2024-01-31 17:35:03,299 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 76 selfloop transitions, 10 changer transitions 17/140 dead transitions. [2024-01-31 17:35:03,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 140 transitions, 786 flow [2024-01-31 17:35:03,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:35:03,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:35:03,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 302 transitions. [2024-01-31 17:35:03,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6331236897274634 [2024-01-31 17:35:03,301 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 334 flow. Second operand 9 states and 302 transitions. [2024-01-31 17:35:03,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 140 transitions, 786 flow [2024-01-31 17:35:03,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 140 transitions, 755 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-01-31 17:35:03,400 INFO L231 Difference]: Finished difference. Result has 85 places, 71 transitions, 367 flow [2024-01-31 17:35:03,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=367, PETRI_PLACES=85, PETRI_TRANSITIONS=71} [2024-01-31 17:35:03,401 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 24 predicate places. [2024-01-31 17:35:03,401 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 71 transitions, 367 flow [2024-01-31 17:35:03,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.22222222222222) internal successors, (218), 9 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:03,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:03,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:03,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 17:35:03,402 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:03,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:03,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1848076643, now seen corresponding path program 2 times [2024-01-31 17:35:03,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:03,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528158717] [2024-01-31 17:35:03,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:03,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:03,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:03,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528158717] [2024-01-31 17:35:03,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528158717] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:03,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:03,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:35:03,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337693646] [2024-01-31 17:35:03,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:03,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:35:03,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:03,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:35:03,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:35:03,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:35:03,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 71 transitions, 367 flow. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:03,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:03,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:35:03,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:05,946 INFO L124 PetriNetUnfolderBase]: 16121/23811 cut-off events. [2024-01-31 17:35:05,946 INFO L125 PetriNetUnfolderBase]: For 35261/35854 co-relation queries the response was YES. [2024-01-31 17:35:06,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73664 conditions, 23811 events. 16121/23811 cut-off events. For 35261/35854 co-relation queries the response was YES. Maximal size of possible extension queue 1183. Compared 162926 event pairs, 1706 based on Foata normal form. 371/23532 useless extension candidates. Maximal degree in co-relation 73644. Up to 8766 conditions per place. [2024-01-31 17:35:06,123 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 92 selfloop transitions, 18 changer transitions 4/134 dead transitions. [2024-01-31 17:35:06,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 134 transitions, 806 flow [2024-01-31 17:35:06,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:35:06,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:35:06,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 249 transitions. [2024-01-31 17:35:06,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6711590296495957 [2024-01-31 17:35:06,125 INFO L175 Difference]: Start difference. First operand has 85 places, 71 transitions, 367 flow. Second operand 7 states and 249 transitions. [2024-01-31 17:35:06,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 134 transitions, 806 flow [2024-01-31 17:35:06,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 134 transitions, 785 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-01-31 17:35:06,432 INFO L231 Difference]: Finished difference. Result has 86 places, 69 transitions, 395 flow [2024-01-31 17:35:06,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=395, PETRI_PLACES=86, PETRI_TRANSITIONS=69} [2024-01-31 17:35:06,433 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 25 predicate places. [2024-01-31 17:35:06,433 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 69 transitions, 395 flow [2024-01-31 17:35:06,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:06,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:06,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:06,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 17:35:06,435 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:06,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:06,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2023926313, now seen corresponding path program 1 times [2024-01-31 17:35:06,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:06,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262033662] [2024-01-31 17:35:06,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:06,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:06,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:06,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:06,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262033662] [2024-01-31 17:35:06,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262033662] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:06,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:06,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:35:06,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717970429] [2024-01-31 17:35:06,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:06,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:35:06,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:06,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:35:06,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:35:06,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-01-31 17:35:06,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 69 transitions, 395 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:06,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:06,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-01-31 17:35:06,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:09,458 INFO L124 PetriNetUnfolderBase]: 15948/27970 cut-off events. [2024-01-31 17:35:09,459 INFO L125 PetriNetUnfolderBase]: For 54966/62839 co-relation queries the response was YES. [2024-01-31 17:35:09,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83869 conditions, 27970 events. 15948/27970 cut-off events. For 54966/62839 co-relation queries the response was YES. Maximal size of possible extension queue 2133. Compared 264121 event pairs, 4133 based on Foata normal form. 340/24895 useless extension candidates. Maximal degree in co-relation 83851. Up to 9538 conditions per place. [2024-01-31 17:35:09,669 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 68 selfloop transitions, 3 changer transitions 14/120 dead transitions. [2024-01-31 17:35:09,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 120 transitions, 751 flow [2024-01-31 17:35:09,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:35:09,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:35:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-01-31 17:35:09,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911949685534591 [2024-01-31 17:35:09,674 INFO L175 Difference]: Start difference. First operand has 86 places, 69 transitions, 395 flow. Second operand 6 states and 188 transitions. [2024-01-31 17:35:09,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 120 transitions, 751 flow [2024-01-31 17:35:10,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 120 transitions, 677 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-01-31 17:35:10,408 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 358 flow [2024-01-31 17:35:10,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=358, PETRI_PLACES=88, PETRI_TRANSITIONS=71} [2024-01-31 17:35:10,409 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 27 predicate places. [2024-01-31 17:35:10,410 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 358 flow [2024-01-31 17:35:10,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:10,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:10,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:10,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 17:35:10,411 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:10,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:10,411 INFO L85 PathProgramCache]: Analyzing trace with hash 871783633, now seen corresponding path program 2 times [2024-01-31 17:35:10,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:10,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609785118] [2024-01-31 17:35:10,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:10,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:10,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:10,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609785118] [2024-01-31 17:35:10,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609785118] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:10,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:10,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:35:10,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722452504] [2024-01-31 17:35:10,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:10,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:35:10,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:10,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:35:10,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:35:10,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:35:10,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 358 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:10,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:10,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:35:10,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:16,127 INFO L124 PetriNetUnfolderBase]: 36327/58564 cut-off events. [2024-01-31 17:35:16,127 INFO L125 PetriNetUnfolderBase]: For 75536/87078 co-relation queries the response was YES. [2024-01-31 17:35:16,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161930 conditions, 58564 events. 36327/58564 cut-off events. For 75536/87078 co-relation queries the response was YES. Maximal size of possible extension queue 4326. Compared 542426 event pairs, 5908 based on Foata normal form. 936/52933 useless extension candidates. Maximal degree in co-relation 161911. Up to 27167 conditions per place. [2024-01-31 17:35:16,520 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 74 selfloop transitions, 13 changer transitions 20/135 dead transitions. [2024-01-31 17:35:16,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 135 transitions, 812 flow [2024-01-31 17:35:16,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:35:16,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:35:16,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-01-31 17:35:16,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390835579514824 [2024-01-31 17:35:16,522 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 358 flow. Second operand 7 states and 200 transitions. [2024-01-31 17:35:16,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 135 transitions, 812 flow [2024-01-31 17:35:19,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 135 transitions, 805 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-31 17:35:19,446 INFO L231 Difference]: Finished difference. Result has 93 places, 77 transitions, 434 flow [2024-01-31 17:35:19,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=434, PETRI_PLACES=93, PETRI_TRANSITIONS=77} [2024-01-31 17:35:19,447 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 32 predicate places. [2024-01-31 17:35:19,447 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 77 transitions, 434 flow [2024-01-31 17:35:19,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:19,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:19,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:19,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 17:35:19,448 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:19,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:19,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1140730067, now seen corresponding path program 3 times [2024-01-31 17:35:19,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:19,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980182257] [2024-01-31 17:35:19,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:19,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:19,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:19,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:19,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980182257] [2024-01-31 17:35:19,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980182257] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:19,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:19,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:35:19,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845388695] [2024-01-31 17:35:19,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:19,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:35:19,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:19,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:35:19,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:35:19,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:35:19,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 77 transitions, 434 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:19,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:19,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:35:19,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:26,513 INFO L124 PetriNetUnfolderBase]: 45785/74407 cut-off events. [2024-01-31 17:35:26,513 INFO L125 PetriNetUnfolderBase]: For 114179/129012 co-relation queries the response was YES. [2024-01-31 17:35:27,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216783 conditions, 74407 events. 45785/74407 cut-off events. For 114179/129012 co-relation queries the response was YES. Maximal size of possible extension queue 5673. Compared 715932 event pairs, 9307 based on Foata normal form. 1177/66949 useless extension candidates. Maximal degree in co-relation 216762. Up to 41673 conditions per place. [2024-01-31 17:35:27,486 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 79 selfloop transitions, 19 changer transitions 13/140 dead transitions. [2024-01-31 17:35:27,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 140 transitions, 932 flow [2024-01-31 17:35:27,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:35:27,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:35:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-01-31 17:35:27,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5256064690026954 [2024-01-31 17:35:27,488 INFO L175 Difference]: Start difference. First operand has 93 places, 77 transitions, 434 flow. Second operand 7 states and 195 transitions. [2024-01-31 17:35:27,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 140 transitions, 932 flow [2024-01-31 17:35:32,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 140 transitions, 926 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-31 17:35:32,947 INFO L231 Difference]: Finished difference. Result has 100 places, 90 transitions, 614 flow [2024-01-31 17:35:32,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=614, PETRI_PLACES=100, PETRI_TRANSITIONS=90} [2024-01-31 17:35:32,948 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 39 predicate places. [2024-01-31 17:35:32,948 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 90 transitions, 614 flow [2024-01-31 17:35:32,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:32,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:32,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:32,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-31 17:35:32,949 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:32,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:32,950 INFO L85 PathProgramCache]: Analyzing trace with hash 565557597, now seen corresponding path program 4 times [2024-01-31 17:35:32,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:32,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060566887] [2024-01-31 17:35:32,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:32,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat