./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/array-eq-trans.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/weaver/array-eq-trans.wvr.c ./goblint.2024-06-19_11-23-25.files/protection/array-eq-trans.wvr.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 16:05:39,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 16:05:40,013 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 16:05:40,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 16:05:40,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 16:05:40,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 16:05:40,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 16:05:40,041 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 16:05:40,041 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 16:05:40,044 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 16:05:40,044 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 16:05:40,045 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 16:05:40,045 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 16:05:40,046 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 16:05:40,047 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 16:05:40,047 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 16:05:40,047 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 16:05:40,047 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 16:05:40,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 16:05:40,048 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 16:05:40,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 16:05:40,048 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 16:05:40,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 16:05:40,049 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 16:05:40,049 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 16:05:40,049 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 16:05:40,049 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 16:05:40,050 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 16:05:40,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 16:05:40,050 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 16:05:40,051 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 16:05:40,051 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 16:05:40,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:05:40,052 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 16:05:40,052 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 16:05:40,052 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 16:05:40,053 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 16:05:40,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 16:05:40,053 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 16:05:40,053 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 16:05:40,053 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 16:05:40,054 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 16:05:40,054 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 16:05:40,054 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 16:05:40,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 16:05:40,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 16:05:40,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 16:05:40,279 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 16:05:40,279 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 16:05:40,280 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2024-06-21 16:05:41,360 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 16:05:41,497 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 16:05:41,497 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2024-06-21 16:05:41,503 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa1fd8593/4d74e6ecb7ba47b8839ec9096ef0d2f6/FLAG9387bf684 [2024-06-21 16:05:41,513 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa1fd8593/4d74e6ecb7ba47b8839ec9096ef0d2f6 [2024-06-21 16:05:41,515 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 16:05:41,516 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 16:05:41,516 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/array-eq-trans.wvr.yml/witness.yml [2024-06-21 16:05:41,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 16:05:41,572 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 16:05:41,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 16:05:41,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 16:05:41,588 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 16:05:41,588 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:05:41" (1/2) ... [2024-06-21 16:05:41,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54cf7d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:05:41, skipping insertion in model container [2024-06-21 16:05:41,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:05:41" (1/2) ... [2024-06-21 16:05:41,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4b05b753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:05:41, skipping insertion in model container [2024-06-21 16:05:41,590 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:05:41" (2/2) ... [2024-06-21 16:05:41,591 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54cf7d9f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:41, skipping insertion in model container [2024-06-21 16:05:41,591 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:05:41" (2/2) ... [2024-06-21 16:05:41,591 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 16:05:41,616 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 16:05:41,617 INFO L97 edCorrectnessWitness]: Location invariant before [L93-L93] ((! multithreaded || 0 <= i_AC) && (! multithreaded || 0 <= i_BC)) && (! multithreaded || 0 <= i_AB) [2024-06-21 16:05:41,617 INFO L97 edCorrectnessWitness]: Location invariant before [L95-L95] ((! multithreaded || 0 <= i_AC) && (! multithreaded || 0 <= i_BC)) && (! multithreaded || 0 <= i_AB) [2024-06-21 16:05:41,617 INFO L97 edCorrectnessWitness]: Location invariant before [L94-L94] ((! multithreaded || 0 <= i_AC) && (! multithreaded || 0 <= i_BC)) && (! multithreaded || 0 <= i_AB) [2024-06-21 16:05:41,617 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 16:05:41,617 INFO L106 edCorrectnessWitness]: ghost_update [L92-L92] multithreaded = 1; [2024-06-21 16:05:41,631 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 16:05:41,867 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:05:41,896 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 16:05:42,032 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:05:42,051 INFO L206 MainTranslator]: Completed translation [2024-06-21 16:05:42,054 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:42 WrapperNode [2024-06-21 16:05:42,055 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 16:05:42,056 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 16:05:42,056 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 16:05:42,056 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 16:05:42,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:42" (1/1) ... [2024-06-21 16:05:42,068 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:42" (1/1) ... [2024-06-21 16:05:42,088 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 202 [2024-06-21 16:05:42,089 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 16:05:42,089 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 16:05:42,089 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 16:05:42,090 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 16:05:42,098 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:42" (1/1) ... [2024-06-21 16:05:42,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:42" (1/1) ... [2024-06-21 16:05:42,101 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:42" (1/1) ... [2024-06-21 16:05:42,113 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-06-21 16:05:42,113 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:42" (1/1) ... [2024-06-21 16:05:42,113 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:42" (1/1) ... [2024-06-21 16:05:42,119 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:42" (1/1) ... [2024-06-21 16:05:42,122 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:42" (1/1) ... [2024-06-21 16:05:42,132 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:42" (1/1) ... [2024-06-21 16:05:42,133 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:42" (1/1) ... [2024-06-21 16:05:42,136 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 16:05:42,136 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 16:05:42,137 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 16:05:42,137 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 16:05:42,137 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:42" (1/1) ... [2024-06-21 16:05:42,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:05:42,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 16:05:42,159 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) [2024-06-21 16:05:42,168 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 [2024-06-21 16:05:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 16:05:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-21 16:05:42,197 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-21 16:05:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-21 16:05:42,197 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-21 16:05:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-21 16:05:42,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-21 16:05:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 16:05:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-21 16:05:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-21 16:05:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-21 16:05:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-21 16:05:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 16:05:42,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 16:05:42,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-21 16:05:42,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-21 16:05:42,200 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 16:05:42,277 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 16:05:42,279 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 16:05:42,656 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 16:05:42,657 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 16:05:42,850 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 16:05:42,851 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-21 16:05:42,851 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:05:42 BoogieIcfgContainer [2024-06-21 16:05:42,851 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 16:05:42,853 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 16:05:42,853 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 16:05:42,855 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 16:05:42,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 04:05:41" (1/4) ... [2024-06-21 16:05:42,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@505d042d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 04:05:42, skipping insertion in model container [2024-06-21 16:05:42,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:05:41" (2/4) ... [2024-06-21 16:05:42,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@505d042d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:05:42, skipping insertion in model container [2024-06-21 16:05:42,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:42" (3/4) ... [2024-06-21 16:05:42,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@505d042d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:05:42, skipping insertion in model container [2024-06-21 16:05:42,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:05:42" (4/4) ... [2024-06-21 16:05:42,857 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2024-06-21 16:05:42,870 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 16:05:42,870 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-21 16:05:42,870 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 16:05:42,896 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-21 16:05:42,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 45 transitions, 111 flow [2024-06-21 16:05:42,952 INFO L124 PetriNetUnfolderBase]: 9/42 cut-off events. [2024-06-21 16:05:42,952 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-21 16:05:42,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 9/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-21 16:05:42,955 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 45 transitions, 111 flow [2024-06-21 16:05:42,957 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 40 transitions, 95 flow [2024-06-21 16:05:42,963 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 16:05:42,968 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;@470a5e5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 16:05:42,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-21 16:05:42,972 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 16:05:42,972 INFO L124 PetriNetUnfolderBase]: 5/15 cut-off events. [2024-06-21 16:05:42,972 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 16:05:42,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:42,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:42,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:42,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:42,977 INFO L85 PathProgramCache]: Analyzing trace with hash 328637942, now seen corresponding path program 1 times [2024-06-21 16:05:42,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:42,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788929873] [2024-06-21 16:05:42,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:42,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:43,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:43,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788929873] [2024-06-21 16:05:43,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788929873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:43,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:43,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 16:05:43,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629692151] [2024-06-21 16:05:43,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:43,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 16:05:43,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:43,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 16:05:43,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 16:05:43,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 16:05:43,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-06-21 16:05:43,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:43,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 16:05:43,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:43,699 INFO L124 PetriNetUnfolderBase]: 2394/3190 cut-off events. [2024-06-21 16:05:43,699 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2024-06-21 16:05:43,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6463 conditions, 3190 events. 2394/3190 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 13682 event pairs, 431 based on Foata normal form. 64/2139 useless extension candidates. Maximal degree in co-relation 6045. Up to 2441 conditions per place. [2024-06-21 16:05:43,731 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 51 selfloop transitions, 4 changer transitions 4/64 dead transitions. [2024-06-21 16:05:43,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 64 transitions, 273 flow [2024-06-21 16:05:43,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 16:05:43,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 16:05:43,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-06-21 16:05:43,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6370370370370371 [2024-06-21 16:05:43,749 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 95 flow. Second operand 3 states and 86 transitions. [2024-06-21 16:05:43,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 64 transitions, 273 flow [2024-06-21 16:05:43,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 64 transitions, 257 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-21 16:05:43,757 INFO L231 Difference]: Finished difference. Result has 39 places, 41 transitions, 110 flow [2024-06-21 16:05:43,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2024-06-21 16:05:43,769 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2024-06-21 16:05:43,770 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 110 flow [2024-06-21 16:05:43,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-06-21 16:05:43,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:43,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:43,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 16:05:43,771 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:43,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:43,771 INFO L85 PathProgramCache]: Analyzing trace with hash -2064021024, now seen corresponding path program 1 times [2024-06-21 16:05:43,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:43,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293627554] [2024-06-21 16:05:43,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:43,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:43,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:43,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293627554] [2024-06-21 16:05:43,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293627554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:43,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:43,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 16:05:43,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780230570] [2024-06-21 16:05:43,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:43,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 16:05:43,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:43,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 16:05:43,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 16:05:43,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 16:05:43,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-06-21 16:05:43,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:43,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 16:05:43,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:44,204 INFO L124 PetriNetUnfolderBase]: 2692/3582 cut-off events. [2024-06-21 16:05:44,204 INFO L125 PetriNetUnfolderBase]: For 383/383 co-relation queries the response was YES. [2024-06-21 16:05:44,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7979 conditions, 3582 events. 2692/3582 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 15724 event pairs, 401 based on Foata normal form. 84/2951 useless extension candidates. Maximal degree in co-relation 1796. Up to 2179 conditions per place. [2024-06-21 16:05:44,221 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 67 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2024-06-21 16:05:44,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 78 transitions, 339 flow [2024-06-21 16:05:44,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 16:05:44,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 16:05:44,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-06-21 16:05:44,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-21 16:05:44,223 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 110 flow. Second operand 4 states and 108 transitions. [2024-06-21 16:05:44,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 78 transitions, 339 flow [2024-06-21 16:05:44,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 78 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 16:05:44,225 INFO L231 Difference]: Finished difference. Result has 39 places, 42 transitions, 133 flow [2024-06-21 16:05:44,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=39, PETRI_TRANSITIONS=42} [2024-06-21 16:05:44,226 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2024-06-21 16:05:44,226 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 42 transitions, 133 flow [2024-06-21 16:05:44,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-06-21 16:05:44,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:44,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:44,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 16:05:44,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:44,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:44,228 INFO L85 PathProgramCache]: Analyzing trace with hash 430103479, now seen corresponding path program 1 times [2024-06-21 16:05:44,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:44,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321848207] [2024-06-21 16:05:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:44,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:44,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:44,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321848207] [2024-06-21 16:05:44,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321848207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:44,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:44,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 16:05:44,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168459024] [2024-06-21 16:05:44,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:44,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 16:05:44,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:44,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 16:05:44,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 16:05:44,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 16:05:44,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 42 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:05:44,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:44,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 16:05:44,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:44,633 INFO L124 PetriNetUnfolderBase]: 3117/4155 cut-off events. [2024-06-21 16:05:44,633 INFO L125 PetriNetUnfolderBase]: For 1487/1487 co-relation queries the response was YES. [2024-06-21 16:05:44,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9779 conditions, 4155 events. 3117/4155 cut-off events. For 1487/1487 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 18532 event pairs, 505 based on Foata normal form. 80/3447 useless extension candidates. Maximal degree in co-relation 4001. Up to 2782 conditions per place. [2024-06-21 16:05:44,653 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 69 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2024-06-21 16:05:44,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 80 transitions, 374 flow [2024-06-21 16:05:44,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 16:05:44,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 16:05:44,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-06-21 16:05:44,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-06-21 16:05:44,657 INFO L175 Difference]: Start difference. First operand has 39 places, 42 transitions, 133 flow. Second operand 4 states and 107 transitions. [2024-06-21 16:05:44,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 80 transitions, 374 flow [2024-06-21 16:05:44,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 80 transitions, 365 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 16:05:44,662 INFO L231 Difference]: Finished difference. Result has 41 places, 44 transitions, 157 flow [2024-06-21 16:05:44,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=41, PETRI_TRANSITIONS=44} [2024-06-21 16:05:44,663 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-06-21 16:05:44,663 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 44 transitions, 157 flow [2024-06-21 16:05:44,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:05:44,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:44,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:44,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 16:05:44,664 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:44,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:44,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1849328863, now seen corresponding path program 1 times [2024-06-21 16:05:44,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:44,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378528312] [2024-06-21 16:05:44,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:44,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:44,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:44,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:44,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378528312] [2024-06-21 16:05:44,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378528312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:44,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:44,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:05:44,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377431603] [2024-06-21 16:05:44,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:44,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 16:05:44,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:44,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 16:05:44,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 16:05:44,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-21 16:05:44,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 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) [2024-06-21 16:05:44,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:44,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-21 16:05:44,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:45,047 INFO L124 PetriNetUnfolderBase]: 3998/5716 cut-off events. [2024-06-21 16:05:45,048 INFO L125 PetriNetUnfolderBase]: For 2772/2891 co-relation queries the response was YES. [2024-06-21 16:05:45,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13583 conditions, 5716 events. 3998/5716 cut-off events. For 2772/2891 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 30166 event pairs, 2268 based on Foata normal form. 0/4753 useless extension candidates. Maximal degree in co-relation 7351. Up to 3828 conditions per place. [2024-06-21 16:05:45,074 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 63 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2024-06-21 16:05:45,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 77 transitions, 393 flow [2024-06-21 16:05:45,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:05:45,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:05:45,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-06-21 16:05:45,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155555555555555 [2024-06-21 16:05:45,089 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 157 flow. Second operand 5 states and 116 transitions. [2024-06-21 16:05:45,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 77 transitions, 393 flow [2024-06-21 16:05:45,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 77 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 16:05:45,094 INFO L231 Difference]: Finished difference. Result has 46 places, 50 transitions, 200 flow [2024-06-21 16:05:45,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=46, PETRI_TRANSITIONS=50} [2024-06-21 16:05:45,095 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2024-06-21 16:05:45,095 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 50 transitions, 200 flow [2024-06-21 16:05:45,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 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) [2024-06-21 16:05:45,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:45,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:45,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 16:05:45,096 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:45,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1969181613, now seen corresponding path program 1 times [2024-06-21 16:05:45,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:45,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285006865] [2024-06-21 16:05:45,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:45,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:45,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:45,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285006865] [2024-06-21 16:05:45,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285006865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:45,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:45,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 16:05:45,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309057579] [2024-06-21 16:05:45,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:45,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 16:05:45,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:45,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 16:05:45,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 16:05:45,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 16:05:45,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 50 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-06-21 16:05:45,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:45,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 16:05:45,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:45,564 INFO L124 PetriNetUnfolderBase]: 4799/6525 cut-off events. [2024-06-21 16:05:45,565 INFO L125 PetriNetUnfolderBase]: For 3580/3580 co-relation queries the response was YES. [2024-06-21 16:05:45,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16035 conditions, 6525 events. 4799/6525 cut-off events. For 3580/3580 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 31942 event pairs, 1032 based on Foata normal form. 112/5850 useless extension candidates. Maximal degree in co-relation 11541. Up to 4489 conditions per place. [2024-06-21 16:05:45,586 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 74 selfloop transitions, 6 changer transitions 0/85 dead transitions. [2024-06-21 16:05:45,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 85 transitions, 451 flow [2024-06-21 16:05:45,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 16:05:45,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 16:05:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-21 16:05:45,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5722222222222222 [2024-06-21 16:05:45,588 INFO L175 Difference]: Start difference. First operand has 46 places, 50 transitions, 200 flow. Second operand 4 states and 103 transitions. [2024-06-21 16:05:45,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 85 transitions, 451 flow [2024-06-21 16:05:45,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 85 transitions, 447 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-21 16:05:45,593 INFO L231 Difference]: Finished difference. Result has 49 places, 52 transitions, 229 flow [2024-06-21 16:05:45,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=49, PETRI_TRANSITIONS=52} [2024-06-21 16:05:45,594 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2024-06-21 16:05:45,594 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 229 flow [2024-06-21 16:05:45,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-06-21 16:05:45,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:45,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:45,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 16:05:45,594 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:45,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:45,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1968759662, now seen corresponding path program 1 times [2024-06-21 16:05:45,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:45,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896174820] [2024-06-21 16:05:45,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:45,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-21 16:05:45,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:45,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896174820] [2024-06-21 16:05:45,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896174820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:45,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:45,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:05:45,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330628250] [2024-06-21 16:05:45,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:45,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:05:45,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:45,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:05:45,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:05:45,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-21 16:05:45,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 52 transitions, 229 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-06-21 16:05:45,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:45,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-21 16:05:45,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:46,334 INFO L124 PetriNetUnfolderBase]: 7492/10708 cut-off events. [2024-06-21 16:05:46,334 INFO L125 PetriNetUnfolderBase]: For 7354/7612 co-relation queries the response was YES. [2024-06-21 16:05:46,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26859 conditions, 10708 events. 7492/10708 cut-off events. For 7354/7612 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 61080 event pairs, 4019 based on Foata normal form. 167/9574 useless extension candidates. Maximal degree in co-relation 17782. Up to 4351 conditions per place. [2024-06-21 16:05:46,376 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 87 selfloop transitions, 10 changer transitions 0/104 dead transitions. [2024-06-21 16:05:46,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 104 transitions, 606 flow [2024-06-21 16:05:46,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:05:46,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:05:46,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-06-21 16:05:46,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2024-06-21 16:05:46,378 INFO L175 Difference]: Start difference. First operand has 49 places, 52 transitions, 229 flow. Second operand 5 states and 132 transitions. [2024-06-21 16:05:46,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 104 transitions, 606 flow [2024-06-21 16:05:46,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 104 transitions, 593 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 16:05:46,387 INFO L231 Difference]: Finished difference. Result has 54 places, 55 transitions, 279 flow [2024-06-21 16:05:46,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=279, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2024-06-21 16:05:46,390 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-06-21 16:05:46,390 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 279 flow [2024-06-21 16:05:46,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-06-21 16:05:46,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:46,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:46,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 16:05:46,391 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:46,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:46,391 INFO L85 PathProgramCache]: Analyzing trace with hash 261821694, now seen corresponding path program 1 times [2024-06-21 16:05:46,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:46,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886507507] [2024-06-21 16:05:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:46,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-21 16:05:46,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:46,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886507507] [2024-06-21 16:05:46,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886507507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:46,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:46,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:05:46,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475671342] [2024-06-21 16:05:46,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:46,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:05:46,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:46,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:05:46,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:05:46,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-21 16:05:46,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-06-21 16:05:46,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:46,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-21 16:05:46,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:47,483 INFO L124 PetriNetUnfolderBase]: 10214/14729 cut-off events. [2024-06-21 16:05:47,483 INFO L125 PetriNetUnfolderBase]: For 10722/11068 co-relation queries the response was YES. [2024-06-21 16:05:47,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37521 conditions, 14729 events. 10214/14729 cut-off events. For 10722/11068 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 89552 event pairs, 4608 based on Foata normal form. 0/13169 useless extension candidates. Maximal degree in co-relation 26244. Up to 5789 conditions per place. [2024-06-21 16:05:47,533 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 81 selfloop transitions, 11 changer transitions 1/100 dead transitions. [2024-06-21 16:05:47,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 100 transitions, 631 flow [2024-06-21 16:05:47,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:05:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:05:47,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-21 16:05:47,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5644444444444444 [2024-06-21 16:05:47,535 INFO L175 Difference]: Start difference. First operand has 54 places, 55 transitions, 279 flow. Second operand 5 states and 127 transitions. [2024-06-21 16:05:47,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 100 transitions, 631 flow [2024-06-21 16:05:47,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 100 transitions, 618 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-21 16:05:47,546 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 325 flow [2024-06-21 16:05:47,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=325, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-06-21 16:05:47,548 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2024-06-21 16:05:47,548 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 325 flow [2024-06-21 16:05:47,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-06-21 16:05:47,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:47,548 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] [2024-06-21 16:05:47,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 16:05:47,549 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:47,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:47,549 INFO L85 PathProgramCache]: Analyzing trace with hash -361808553, now seen corresponding path program 1 times [2024-06-21 16:05:47,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:47,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62755478] [2024-06-21 16:05:47,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:47,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:47,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 16:05:47,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:47,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62755478] [2024-06-21 16:05:47,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62755478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:47,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:47,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:05:47,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709206045] [2024-06-21 16:05:47,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:47,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:05:47,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:47,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:05:47,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:05:47,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 16:05:47,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 325 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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) [2024-06-21 16:05:47,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:47,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 16:05:47,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:48,729 INFO L124 PetriNetUnfolderBase]: 10577/14712 cut-off events. [2024-06-21 16:05:48,730 INFO L125 PetriNetUnfolderBase]: For 15800/15800 co-relation queries the response was YES. [2024-06-21 16:05:48,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40278 conditions, 14712 events. 10577/14712 cut-off events. For 15800/15800 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 83614 event pairs, 2310 based on Foata normal form. 80/13968 useless extension candidates. Maximal degree in co-relation 30353. Up to 9859 conditions per place. [2024-06-21 16:05:48,790 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 94 selfloop transitions, 7 changer transitions 6/112 dead transitions. [2024-06-21 16:05:48,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 112 transitions, 704 flow [2024-06-21 16:05:48,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:05:48,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:05:48,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-06-21 16:05:48,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5955555555555555 [2024-06-21 16:05:48,794 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 325 flow. Second operand 5 states and 134 transitions. [2024-06-21 16:05:48,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 112 transitions, 704 flow [2024-06-21 16:05:48,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 112 transitions, 695 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-21 16:05:48,813 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 346 flow [2024-06-21 16:05:48,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=346, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-06-21 16:05:48,816 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2024-06-21 16:05:48,816 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 346 flow [2024-06-21 16:05:48,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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) [2024-06-21 16:05:48,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:48,816 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] [2024-06-21 16:05:48,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 16:05:48,817 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:48,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:48,817 INFO L85 PathProgramCache]: Analyzing trace with hash -361802043, now seen corresponding path program 2 times [2024-06-21 16:05:48,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:48,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77363677] [2024-06-21 16:05:48,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:48,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 16:05:48,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:48,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77363677] [2024-06-21 16:05:48,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77363677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:48,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:48,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:05:48,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274243678] [2024-06-21 16:05:48,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:48,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:05:48,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:48,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:05:48,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:05:48,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 16:05:48,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 346 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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) [2024-06-21 16:05:48,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:48,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 16:05:48,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:49,993 INFO L124 PetriNetUnfolderBase]: 10753/14952 cut-off events. [2024-06-21 16:05:49,994 INFO L125 PetriNetUnfolderBase]: For 21003/21003 co-relation queries the response was YES. [2024-06-21 16:05:50,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41963 conditions, 14952 events. 10753/14952 cut-off events. For 21003/21003 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 84194 event pairs, 2298 based on Foata normal form. 80/14224 useless extension candidates. Maximal degree in co-relation 31822. Up to 9227 conditions per place. [2024-06-21 16:05:50,068 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 91 selfloop transitions, 7 changer transitions 9/112 dead transitions. [2024-06-21 16:05:50,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 112 transitions, 717 flow [2024-06-21 16:05:50,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:05:50,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:05:50,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-21 16:05:50,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911111111111111 [2024-06-21 16:05:50,069 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 346 flow. Second operand 5 states and 133 transitions. [2024-06-21 16:05:50,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 112 transitions, 717 flow [2024-06-21 16:05:50,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 112 transitions, 705 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 16:05:50,133 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 354 flow [2024-06-21 16:05:50,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-06-21 16:05:50,133 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2024-06-21 16:05:50,134 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 354 flow [2024-06-21 16:05:50,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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) [2024-06-21 16:05:50,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:50,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:50,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 16:05:50,134 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:50,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:50,135 INFO L85 PathProgramCache]: Analyzing trace with hash -550161387, now seen corresponding path program 1 times [2024-06-21 16:05:50,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:50,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158128950] [2024-06-21 16:05:50,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:50,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:50,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-21 16:05:50,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:50,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158128950] [2024-06-21 16:05:50,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158128950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:50,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:50,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:05:50,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63769366] [2024-06-21 16:05:50,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:50,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 16:05:50,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:50,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 16:05:50,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 16:05:50,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-21 16:05:50,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:05:50,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:50,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-21 16:05:50,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:51,122 INFO L124 PetriNetUnfolderBase]: 8667/12450 cut-off events. [2024-06-21 16:05:51,123 INFO L125 PetriNetUnfolderBase]: For 17768/18032 co-relation queries the response was YES. [2024-06-21 16:05:51,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34817 conditions, 12450 events. 8667/12450 cut-off events. For 17768/18032 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 72848 event pairs, 5622 based on Foata normal form. 0/11837 useless extension candidates. Maximal degree in co-relation 31251. Up to 10543 conditions per place. [2024-06-21 16:05:51,174 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 46 selfloop transitions, 2 changer transitions 26/80 dead transitions. [2024-06-21 16:05:51,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 80 transitions, 588 flow [2024-06-21 16:05:51,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:05:51,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:05:51,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-06-21 16:05:51,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49777777777777776 [2024-06-21 16:05:51,175 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 354 flow. Second operand 5 states and 112 transitions. [2024-06-21 16:05:51,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 80 transitions, 588 flow [2024-06-21 16:05:51,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 80 transitions, 572 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 16:05:51,199 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 310 flow [2024-06-21 16:05:51,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2024-06-21 16:05:51,200 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2024-06-21 16:05:51,202 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 310 flow [2024-06-21 16:05:51,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:05:51,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:51,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:51,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 16:05:51,203 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:51,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:51,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1307666172, now seen corresponding path program 1 times [2024-06-21 16:05:51,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:51,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374014606] [2024-06-21 16:05:51,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:51,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-21 16:05:51,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:51,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374014606] [2024-06-21 16:05:51,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374014606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:51,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:51,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:05:51,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324159607] [2024-06-21 16:05:51,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:51,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:05:51,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:51,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:05:51,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:05:51,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-21 16:05:51,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 310 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:05:51,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:51,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-21 16:05:51,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:52,062 INFO L124 PetriNetUnfolderBase]: 6738/9610 cut-off events. [2024-06-21 16:05:52,069 INFO L125 PetriNetUnfolderBase]: For 13907/14135 co-relation queries the response was YES. [2024-06-21 16:05:52,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27447 conditions, 9610 events. 6738/9610 cut-off events. For 13907/14135 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 52830 event pairs, 2703 based on Foata normal form. 66/9592 useless extension candidates. Maximal degree in co-relation 27418. Up to 4349 conditions per place. [2024-06-21 16:05:52,138 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 50 selfloop transitions, 9 changer transitions 22/87 dead transitions. [2024-06-21 16:05:52,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 87 transitions, 584 flow [2024-06-21 16:05:52,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:05:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:05:52,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-21 16:05:52,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377777777777778 [2024-06-21 16:05:52,150 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 310 flow. Second operand 5 states and 121 transitions. [2024-06-21 16:05:52,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 87 transitions, 584 flow [2024-06-21 16:05:52,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 87 transitions, 562 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-21 16:05:52,181 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 308 flow [2024-06-21 16:05:52,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2024-06-21 16:05:52,182 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2024-06-21 16:05:52,182 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 308 flow [2024-06-21 16:05:52,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:05:52,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:52,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:52,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 16:05:52,183 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:52,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:52,184 INFO L85 PathProgramCache]: Analyzing trace with hash 148356786, now seen corresponding path program 1 times [2024-06-21 16:05:52,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:52,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635435020] [2024-06-21 16:05:52,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:52,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:52,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-21 16:05:52,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:52,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635435020] [2024-06-21 16:05:52,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635435020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:52,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:52,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:05:52,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329520533] [2024-06-21 16:05:52,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:52,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:05:52,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:52,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:05:52,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:05:52,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-21 16:05:52,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:05:52,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:52,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-21 16:05:52,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:52,772 INFO L124 PetriNetUnfolderBase]: 5187/7164 cut-off events. [2024-06-21 16:05:52,772 INFO L125 PetriNetUnfolderBase]: For 11178/11374 co-relation queries the response was YES. [2024-06-21 16:05:52,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21035 conditions, 7164 events. 5187/7164 cut-off events. For 11178/11374 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 35352 event pairs, 1815 based on Foata normal form. 57/7150 useless extension candidates. Maximal degree in co-relation 21000. Up to 3786 conditions per place. [2024-06-21 16:05:52,806 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 57 selfloop transitions, 7 changer transitions 22/92 dead transitions. [2024-06-21 16:05:52,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 92 transitions, 618 flow [2024-06-21 16:05:52,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:05:52,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:05:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-06-21 16:05:52,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-21 16:05:52,807 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 308 flow. Second operand 5 states and 126 transitions. [2024-06-21 16:05:52,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 92 transitions, 618 flow [2024-06-21 16:05:52,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 92 transitions, 587 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-21 16:05:52,830 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 294 flow [2024-06-21 16:05:52,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-21 16:05:52,831 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-06-21 16:05:52,831 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 294 flow [2024-06-21 16:05:52,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:05:52,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:52,832 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] [2024-06-21 16:05:52,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 16:05:52,832 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:52,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:52,832 INFO L85 PathProgramCache]: Analyzing trace with hash -2001880141, now seen corresponding path program 1 times [2024-06-21 16:05:52,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:52,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548997115] [2024-06-21 16:05:52,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:52,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:52,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 16:05:52,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:52,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548997115] [2024-06-21 16:05:52,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548997115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:52,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:52,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:05:52,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507398611] [2024-06-21 16:05:52,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:52,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:05:52,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:52,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:05:52,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:05:52,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 16:05:52,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-06-21 16:05:52,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:52,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 16:05:52,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:53,474 INFO L124 PetriNetUnfolderBase]: 5514/7327 cut-off events. [2024-06-21 16:05:53,474 INFO L125 PetriNetUnfolderBase]: For 14756/14756 co-relation queries the response was YES. [2024-06-21 16:05:53,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21881 conditions, 7327 events. 5514/7327 cut-off events. For 14756/14756 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 34183 event pairs, 1014 based on Foata normal form. 64/7022 useless extension candidates. Maximal degree in co-relation 21846. Up to 5377 conditions per place. [2024-06-21 16:05:53,505 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 80 selfloop transitions, 7 changer transitions 12/104 dead transitions. [2024-06-21 16:05:53,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 104 transitions, 649 flow [2024-06-21 16:05:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:05:53,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:05:53,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-21 16:05:53,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334 [2024-06-21 16:05:53,506 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 294 flow. Second operand 5 states and 129 transitions. [2024-06-21 16:05:53,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 104 transitions, 649 flow [2024-06-21 16:05:53,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 104 transitions, 625 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-21 16:05:53,558 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 314 flow [2024-06-21 16:05:53,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-06-21 16:05:53,559 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-06-21 16:05:53,559 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 314 flow [2024-06-21 16:05:53,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-06-21 16:05:53,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:53,559 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] [2024-06-21 16:05:53,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 16:05:53,560 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:53,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:53,560 INFO L85 PathProgramCache]: Analyzing trace with hash 366683529, now seen corresponding path program 2 times [2024-06-21 16:05:53,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:53,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552557342] [2024-06-21 16:05:53,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:53,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 16:05:53,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:53,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552557342] [2024-06-21 16:05:53,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552557342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:53,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:53,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:05:53,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211808712] [2024-06-21 16:05:53,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:53,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:05:53,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:53,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:05:53,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:05:53,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 16:05:53,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 314 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-06-21 16:05:53,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:53,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 16:05:53,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:54,044 INFO L124 PetriNetUnfolderBase]: 5274/7023 cut-off events. [2024-06-21 16:05:54,044 INFO L125 PetriNetUnfolderBase]: For 15322/15322 co-relation queries the response was YES. [2024-06-21 16:05:54,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20041 conditions, 7023 events. 5274/7023 cut-off events. For 15322/15322 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 32753 event pairs, 1194 based on Foata normal form. 64/5903 useless extension candidates. Maximal degree in co-relation 20007. Up to 5271 conditions per place. [2024-06-21 16:05:54,069 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 77 selfloop transitions, 7 changer transitions 12/101 dead transitions. [2024-06-21 16:05:54,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 101 transitions, 633 flow [2024-06-21 16:05:54,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:05:54,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:05:54,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-06-21 16:05:54,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-21 16:05:54,071 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 314 flow. Second operand 5 states and 126 transitions. [2024-06-21 16:05:54,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 101 transitions, 633 flow [2024-06-21 16:05:54,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 101 transitions, 621 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 16:05:54,100 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 320 flow [2024-06-21 16:05:54,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-06-21 16:05:54,101 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2024-06-21 16:05:54,101 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 320 flow [2024-06-21 16:05:54,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-06-21 16:05:54,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:54,101 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] [2024-06-21 16:05:54,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 16:05:54,102 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:54,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:54,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1081959244, now seen corresponding path program 1 times [2024-06-21 16:05:54,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:54,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152825628] [2024-06-21 16:05:54,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:54,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:54,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 16:05:54,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:54,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152825628] [2024-06-21 16:05:54,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152825628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:54,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:54,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:05:54,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576125910] [2024-06-21 16:05:54,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:54,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:05:54,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:54,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:05:54,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:05:54,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 16:05:54,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 320 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-06-21 16:05:54,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:54,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 16:05:54,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:54,627 INFO L124 PetriNetUnfolderBase]: 5690/7567 cut-off events. [2024-06-21 16:05:54,628 INFO L125 PetriNetUnfolderBase]: For 17916/17916 co-relation queries the response was YES. [2024-06-21 16:05:54,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21726 conditions, 7567 events. 5690/7567 cut-off events. For 17916/17916 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 35849 event pairs, 1257 based on Foata normal form. 64/6352 useless extension candidates. Maximal degree in co-relation 21691. Up to 5647 conditions per place. [2024-06-21 16:05:54,657 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 78 selfloop transitions, 7 changer transitions 15/105 dead transitions. [2024-06-21 16:05:54,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 105 transitions, 663 flow [2024-06-21 16:05:54,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:05:54,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:05:54,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-21 16:05:54,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334 [2024-06-21 16:05:54,659 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 320 flow. Second operand 5 states and 129 transitions. [2024-06-21 16:05:54,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 105 transitions, 663 flow [2024-06-21 16:05:54,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 105 transitions, 649 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 16:05:54,702 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 336 flow [2024-06-21 16:05:54,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2024-06-21 16:05:54,703 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2024-06-21 16:05:54,703 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 336 flow [2024-06-21 16:05:54,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-06-21 16:05:54,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:54,703 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] [2024-06-21 16:05:54,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 16:05:54,704 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:54,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:54,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1081953664, now seen corresponding path program 2 times [2024-06-21 16:05:54,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:54,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901796083] [2024-06-21 16:05:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:54,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 16:05:54,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:54,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901796083] [2024-06-21 16:05:54,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901796083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:54,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:54,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:05:54,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812397463] [2024-06-21 16:05:54,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:54,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:05:54,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:54,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:05:54,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:05:54,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 16:05:54,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 336 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-06-21 16:05:54,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:54,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 16:05:54,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:55,314 INFO L124 PetriNetUnfolderBase]: 5450/7263 cut-off events. [2024-06-21 16:05:55,314 INFO L125 PetriNetUnfolderBase]: For 17211/17211 co-relation queries the response was YES. [2024-06-21 16:05:55,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20539 conditions, 7263 events. 5450/7263 cut-off events. For 17211/17211 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 34257 event pairs, 1170 based on Foata normal form. 64/6095 useless extension candidates. Maximal degree in co-relation 20503. Up to 5511 conditions per place. [2024-06-21 16:05:55,339 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 72 selfloop transitions, 7 changer transitions 18/102 dead transitions. [2024-06-21 16:05:55,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 102 transitions, 657 flow [2024-06-21 16:05:55,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:05:55,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:05:55,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-06-21 16:05:55,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-21 16:05:55,341 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 336 flow. Second operand 5 states and 126 transitions. [2024-06-21 16:05:55,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 102 transitions, 657 flow [2024-06-21 16:05:55,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 102 transitions, 645 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 16:05:55,382 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 342 flow [2024-06-21 16:05:55,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=342, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2024-06-21 16:05:55,382 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2024-06-21 16:05:55,383 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 342 flow [2024-06-21 16:05:55,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-06-21 16:05:55,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:55,383 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] [2024-06-21 16:05:55,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 16:05:55,383 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:55,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:55,384 INFO L85 PathProgramCache]: Analyzing trace with hash -450918484, now seen corresponding path program 1 times [2024-06-21 16:05:55,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:55,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334752536] [2024-06-21 16:05:55,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:55,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:55,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 16:05:55,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:55,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334752536] [2024-06-21 16:05:55,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334752536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:55,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:55,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:05:55,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392590005] [2024-06-21 16:05:55,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:55,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:05:55,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:55,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:05:55,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:05:55,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 16:05:55,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 342 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2024-06-21 16:05:55,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:55,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 16:05:55,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:56,100 INFO L124 PetriNetUnfolderBase]: 5866/7807 cut-off events. [2024-06-21 16:05:56,100 INFO L125 PetriNetUnfolderBase]: For 19356/19356 co-relation queries the response was YES. [2024-06-21 16:05:56,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22160 conditions, 7807 events. 5866/7807 cut-off events. For 19356/19356 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 36932 event pairs, 918 based on Foata normal form. 64/6544 useless extension candidates. Maximal degree in co-relation 22123. Up to 5101 conditions per place. [2024-06-21 16:05:56,137 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 63 selfloop transitions, 5 changer transitions 51/124 dead transitions. [2024-06-21 16:05:56,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 124 transitions, 777 flow [2024-06-21 16:05:56,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:05:56,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:05:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-21 16:05:56,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-06-21 16:05:56,139 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 342 flow. Second operand 6 states and 156 transitions. [2024-06-21 16:05:56,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 124 transitions, 777 flow [2024-06-21 16:05:56,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 124 transitions, 763 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 16:05:56,204 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 318 flow [2024-06-21 16:05:56,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2024-06-21 16:05:56,204 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-06-21 16:05:56,204 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 318 flow [2024-06-21 16:05:56,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2024-06-21 16:05:56,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:56,205 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] [2024-06-21 16:05:56,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 16:05:56,205 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:56,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:56,206 INFO L85 PathProgramCache]: Analyzing trace with hash -450912904, now seen corresponding path program 2 times [2024-06-21 16:05:56,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:56,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945831491] [2024-06-21 16:05:56,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:56,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:56,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 16:05:56,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:56,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945831491] [2024-06-21 16:05:56,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945831491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:56,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:56,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:05:56,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649872388] [2024-06-21 16:05:56,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:56,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:05:56,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:56,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:05:56,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:05:56,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 16:05:56,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2024-06-21 16:05:56,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:56,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 16:05:56,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:56,819 INFO L124 PetriNetUnfolderBase]: 5286/7051 cut-off events. [2024-06-21 16:05:56,820 INFO L125 PetriNetUnfolderBase]: For 18671/18671 co-relation queries the response was YES. [2024-06-21 16:05:56,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19961 conditions, 7051 events. 5286/7051 cut-off events. For 18671/18671 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 32759 event pairs, 1062 based on Foata normal form. 64/5908 useless extension candidates. Maximal degree in co-relation 19923. Up to 4525 conditions per place. [2024-06-21 16:05:56,843 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 48 selfloop transitions, 3 changer transitions 63/119 dead transitions. [2024-06-21 16:05:56,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 119 transitions, 737 flow [2024-06-21 16:05:56,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:05:56,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:05:56,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-21 16:05:56,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2024-06-21 16:05:56,845 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 318 flow. Second operand 6 states and 152 transitions. [2024-06-21 16:05:56,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 119 transitions, 737 flow [2024-06-21 16:05:56,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 119 transitions, 717 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-21 16:05:56,907 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 280 flow [2024-06-21 16:05:56,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=280, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2024-06-21 16:05:56,907 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2024-06-21 16:05:56,907 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 280 flow [2024-06-21 16:05:56,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2024-06-21 16:05:56,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:56,908 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] [2024-06-21 16:05:56,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 16:05:56,908 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:56,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:56,908 INFO L85 PathProgramCache]: Analyzing trace with hash -450716674, now seen corresponding path program 3 times [2024-06-21 16:05:56,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:56,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270947245] [2024-06-21 16:05:56,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:56,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:57,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 16:05:57,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:57,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270947245] [2024-06-21 16:05:57,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270947245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:57,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:57,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:05:57,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270253140] [2024-06-21 16:05:57,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:57,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:05:57,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:57,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:05:57,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:05:57,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 16:05:57,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2024-06-21 16:05:57,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:57,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 16:05:57,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:57,471 INFO L124 PetriNetUnfolderBase]: 4316/5765 cut-off events. [2024-06-21 16:05:57,472 INFO L125 PetriNetUnfolderBase]: For 14283/14283 co-relation queries the response was YES. [2024-06-21 16:05:57,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16128 conditions, 5765 events. 4316/5765 cut-off events. For 14283/14283 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 25323 event pairs, 690 based on Foata normal form. 64/4841 useless extension candidates. Maximal degree in co-relation 16091. Up to 3089 conditions per place. [2024-06-21 16:05:57,490 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 53 selfloop transitions, 4 changer transitions 51/113 dead transitions. [2024-06-21 16:05:57,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 113 transitions, 676 flow [2024-06-21 16:05:57,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:05:57,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:05:57,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-21 16:05:57,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5518518518518518 [2024-06-21 16:05:57,492 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 280 flow. Second operand 6 states and 149 transitions. [2024-06-21 16:05:57,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 113 transitions, 676 flow [2024-06-21 16:05:57,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 113 transitions, 637 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-21 16:05:57,524 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 241 flow [2024-06-21 16:05:57,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=241, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2024-06-21 16:05:57,526 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2024-06-21 16:05:57,526 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 241 flow [2024-06-21 16:05:57,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2024-06-21 16:05:57,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:57,527 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] [2024-06-21 16:05:57,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 16:05:57,527 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:57,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:57,547 INFO L85 PathProgramCache]: Analyzing trace with hash -450704584, now seen corresponding path program 4 times [2024-06-21 16:05:57,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:57,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624599347] [2024-06-21 16:05:57,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:57,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:57,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 16:05:57,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:57,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624599347] [2024-06-21 16:05:57,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624599347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:57,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:57,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:05:57,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052592772] [2024-06-21 16:05:57,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:57,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:05:57,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:57,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:05:57,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:05:57,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 16:05:57,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2024-06-21 16:05:57,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:57,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 16:05:57,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:58,104 INFO L124 PetriNetUnfolderBase]: 3736/5009 cut-off events. [2024-06-21 16:05:58,104 INFO L125 PetriNetUnfolderBase]: For 8853/8853 co-relation queries the response was YES. [2024-06-21 16:05:58,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13336 conditions, 5009 events. 3736/5009 cut-off events. For 8853/8853 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 21731 event pairs, 834 based on Foata normal form. 64/4205 useless extension candidates. Maximal degree in co-relation 13302. Up to 2513 conditions per place. [2024-06-21 16:05:58,121 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 41 selfloop transitions, 2 changer transitions 60/108 dead transitions. [2024-06-21 16:05:58,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 108 transitions, 609 flow [2024-06-21 16:05:58,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:05:58,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:05:58,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-21 16:05:58,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-06-21 16:05:58,122 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 241 flow. Second operand 6 states and 145 transitions. [2024-06-21 16:05:58,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 108 transitions, 609 flow [2024-06-21 16:05:58,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 108 transitions, 591 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-21 16:05:58,144 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 204 flow [2024-06-21 16:05:58,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2024-06-21 16:05:58,145 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-06-21 16:05:58,145 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 204 flow [2024-06-21 16:05:58,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2024-06-21 16:05:58,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:58,145 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] [2024-06-21 16:05:58,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 16:05:58,146 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:58,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:58,146 INFO L85 PathProgramCache]: Analyzing trace with hash -450538114, now seen corresponding path program 5 times [2024-06-21 16:05:58,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:58,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909434229] [2024-06-21 16:05:58,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:58,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 16:05:58,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:58,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909434229] [2024-06-21 16:05:58,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909434229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:58,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:58,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:05:58,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893178017] [2024-06-21 16:05:58,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:58,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:05:58,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:58,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:05:58,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:05:58,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 16:05:58,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2024-06-21 16:05:58,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:58,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 16:05:58,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:58,581 INFO L124 PetriNetUnfolderBase]: 2784/3753 cut-off events. [2024-06-21 16:05:58,582 INFO L125 PetriNetUnfolderBase]: For 5873/5873 co-relation queries the response was YES. [2024-06-21 16:05:58,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9763 conditions, 3753 events. 2784/3753 cut-off events. For 5873/5873 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 15055 event pairs, 498 based on Foata normal form. 64/3165 useless extension candidates. Maximal degree in co-relation 9730. Up to 1425 conditions per place. [2024-06-21 16:05:58,594 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 46 selfloop transitions, 3 changer transitions 48/102 dead transitions. [2024-06-21 16:05:58,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 102 transitions, 548 flow [2024-06-21 16:05:58,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:05:58,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:05:58,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-21 16:05:58,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5259259259259259 [2024-06-21 16:05:58,596 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 204 flow. Second operand 6 states and 142 transitions. [2024-06-21 16:05:58,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 102 transitions, 548 flow [2024-06-21 16:05:58,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 102 transitions, 508 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 16:05:58,606 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 164 flow [2024-06-21 16:05:58,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-21 16:05:58,607 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-06-21 16:05:58,607 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 164 flow [2024-06-21 16:05:58,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2024-06-21 16:05:58,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:58,607 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] [2024-06-21 16:05:58,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 16:05:58,608 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:05:58,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:58,608 INFO L85 PathProgramCache]: Analyzing trace with hash -450531604, now seen corresponding path program 6 times [2024-06-21 16:05:58,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:58,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658157230] [2024-06-21 16:05:58,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:58,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:58,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 16:05:58,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:58,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658157230] [2024-06-21 16:05:58,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658157230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:58,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:58,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:05:58,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161663871] [2024-06-21 16:05:58,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:58,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:05:58,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:58,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:05:58,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:05:58,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 16:05:58,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2024-06-21 16:05:58,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:58,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 16:05:58,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:58,964 INFO L124 PetriNetUnfolderBase]: 1680/2329 cut-off events. [2024-06-21 16:05:58,965 INFO L125 PetriNetUnfolderBase]: For 1700/1700 co-relation queries the response was YES. [2024-06-21 16:05:58,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5420 conditions, 2329 events. 1680/2329 cut-off events. For 1700/1700 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9258 event pairs, 306 based on Foata normal form. 64/1981 useless extension candidates. Maximal degree in co-relation 5407. Up to 627 conditions per place. [2024-06-21 16:05:58,969 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2024-06-21 16:05:58,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 83 transitions, 402 flow [2024-06-21 16:05:58,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:05:58,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:05:58,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-21 16:05:58,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-21 16:05:58,970 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 164 flow. Second operand 6 states and 124 transitions. [2024-06-21 16:05:58,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 83 transitions, 402 flow [2024-06-21 16:05:58,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 83 transitions, 394 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 16:05:58,972 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2024-06-21 16:05:58,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2024-06-21 16:05:58,972 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-21 16:05:58,972 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2024-06-21 16:05:58,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2024-06-21 16:05:58,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-21 16:05:58,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-21 16:05:58,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-21 16:05:58,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-21 16:05:58,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-21 16:05:58,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-21 16:05:58,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 16:05:58,979 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:58,981 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 16:05:58,982 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 16:05:58,984 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-21 16:05:58,984 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-21 16:05:58,985 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 04:05:58 BasicIcfg [2024-06-21 16:05:58,985 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 16:05:58,986 INFO L158 Benchmark]: Toolchain (without parser) took 17413.23ms. Allocated memory was 146.8MB in the beginning and 7.4GB in the end (delta: 7.2GB). Free memory was 71.1MB in the beginning and 4.4GB in the end (delta: -4.4GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2024-06-21 16:05:58,986 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 146.8MB. Free memory is still 95.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 16:05:58,986 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 146.8MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 16:05:58,986 INFO L158 Benchmark]: CACSL2BoogieTranslator took 471.03ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 70.8MB in the beginning and 180.3MB in the end (delta: -109.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-21 16:05:58,986 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.13ms. Allocated memory is still 211.8MB. Free memory was 180.3MB in the beginning and 178.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 16:05:58,987 INFO L158 Benchmark]: Boogie Preprocessor took 46.60ms. Allocated memory is still 211.8MB. Free memory was 178.2MB in the beginning and 175.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 16:05:58,987 INFO L158 Benchmark]: RCFGBuilder took 714.72ms. Allocated memory is still 211.8MB. Free memory was 175.1MB in the beginning and 95.4MB in the end (delta: 79.7MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. [2024-06-21 16:05:58,987 INFO L158 Benchmark]: TraceAbstraction took 16132.60ms. Allocated memory was 211.8MB in the beginning and 7.4GB in the end (delta: 7.1GB). Free memory was 94.4MB in the beginning and 4.4GB in the end (delta: -4.4GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2024-06-21 16:05:58,988 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 146.8MB. Free memory is still 95.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 146.8MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 471.03ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 70.8MB in the beginning and 180.3MB in the end (delta: -109.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.13ms. Allocated memory is still 211.8MB. Free memory was 180.3MB in the beginning and 178.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.60ms. Allocated memory is still 211.8MB. Free memory was 178.2MB in the beginning and 175.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 714.72ms. Allocated memory is still 211.8MB. Free memory was 175.1MB in the beginning and 95.4MB in the end (delta: 79.7MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. * TraceAbstraction took 16132.60ms. Allocated memory was 211.8MB in the beginning and 7.4GB in the end (delta: 7.1GB). Free memory was 94.4MB in the beginning and 4.4GB in the end (delta: -4.4GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 93]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 94]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 95]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 55 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.1s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1177 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1078 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 109 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4673 IncrementalHoareTripleChecker+Invalid, 4782 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 109 mSolverCounterUnsat, 18 mSDtfsCounter, 4673 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=354occurred in iteration=9, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 457 NumberOfCodeBlocks, 457 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 435 ConstructedInterpolants, 0 QuantifiedInterpolants, 3753 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 44/44 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-21 16:05:59,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE