./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/popl20-three-array-sum.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/popl20-three-array-sum.wvr.c ./goblint.2024-06-19_11-23-25.files/protection/popl20-three-array-sum.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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:04:12,207 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:04:12,279 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:04:12,285 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:04:12,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:04:12,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:04:12,313 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:04:12,313 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:04:12,314 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:04:12,317 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:04:12,317 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:04:12,317 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:04:12,318 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:04:12,319 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:04:12,319 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:04:12,319 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:04:12,319 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:04:12,320 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:04:12,320 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:04:12,320 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:04:12,321 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:04:12,321 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:04:12,321 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:04:12,322 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:04:12,322 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:04:12,322 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:04:12,322 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:04:12,322 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:04:12,323 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:04:12,323 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:04:12,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:04:12,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:04:12,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:04:12,325 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:04:12,325 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:04:12,325 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:04:12,325 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:04:12,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:04:12,325 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:04:12,326 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:04:12,326 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:04:12,326 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:04:12,326 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:04:12,326 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:04:12,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:04:12,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:04:12,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:04:12,705 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:04:12,709 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:04:12,710 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/popl20-three-array-sum.wvr.yml/witness.yml [2024-06-27 18:04:12,842 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:04:12,842 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:04:12,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2024-06-27 18:04:13,983 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:04:14,150 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:04:14,151 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2024-06-27 18:04:14,157 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13394a8e6/4943d839408546a8a03ee77600195747/FLAG1dfde708c [2024-06-27 18:04:14,169 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13394a8e6/4943d839408546a8a03ee77600195747 [2024-06-27 18:04:14,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:04:14,170 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:04:14,171 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:04:14,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:04:14,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:04:14,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:04:12" (1/2) ... [2024-06-27 18:04:14,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5f9d69 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:04:14, skipping insertion in model container [2024-06-27 18:04:14,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:04:12" (1/2) ... [2024-06-27 18:04:14,178 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5188f8e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:04:14, skipping insertion in model container [2024-06-27 18:04:14,179 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:04:14" (2/2) ... [2024-06-27 18:04:14,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5f9d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:04:14, skipping insertion in model container [2024-06-27 18:04:14,180 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:04:14" (2/2) ... [2024-06-27 18:04:14,181 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:04:14,192 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:04:14,193 INFO L97 edCorrectnessWitness]: Location invariant before [L97-L97] ! multithreaded || 0 <= p [2024-06-27 18:04:14,193 INFO L97 edCorrectnessWitness]: Location invariant before [L96-L96] ! multithreaded || 0 <= p [2024-06-27 18:04:14,193 INFO L97 edCorrectnessWitness]: Location invariant before [L95-L95] ! multithreaded || 0 <= p [2024-06-27 18:04:14,193 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:04:14,193 INFO L106 edCorrectnessWitness]: ghost_update [L94-L94] multithreaded = 1; [2024-06-27 18:04:14,214 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:04:14,385 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c[2730,2743] [2024-06-27 18:04:14,400 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:04:14,407 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:04:14,468 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c[2730,2743] [2024-06-27 18:04:14,475 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:04:14,488 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:04:14,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:04:14 WrapperNode [2024-06-27 18:04:14,489 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:04:14,490 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:04:14,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:04:14,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:04:14,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:04:14" (1/1) ... [2024-06-27 18:04:14,511 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:04:14" (1/1) ... [2024-06-27 18:04:14,533 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 144 [2024-06-27 18:04:14,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:04:14,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:04:14,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:04:14,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:04:14,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:04:14" (1/1) ... [2024-06-27 18:04:14,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:04:14" (1/1) ... [2024-06-27 18:04:14,560 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:04:14" (1/1) ... [2024-06-27 18:04:14,579 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-06-27 18:04:14,580 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:04:14" (1/1) ... [2024-06-27 18:04:14,580 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:04:14" (1/1) ... [2024-06-27 18:04:14,587 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:04:14" (1/1) ... [2024-06-27 18:04:14,590 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:04:14" (1/1) ... [2024-06-27 18:04:14,591 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:04:14" (1/1) ... [2024-06-27 18:04:14,592 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:04:14" (1/1) ... [2024-06-27 18:04:14,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:04:14,595 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:04:14,595 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:04:14,595 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:04:14,596 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:04:14" (1/1) ... [2024-06-27 18:04:14,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:04:14,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:04:14,633 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) [2024-06-27 18:04:14,657 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 [2024-06-27 18:04:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:04:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 18:04:14,751 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 18:04:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 18:04:14,752 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 18:04:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 18:04:14,752 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 18:04:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:04:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 18:04:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 18:04:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 18:04:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:04:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:04:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 18:04:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:04:14,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:04:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 18:04:14,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 18:04:14,754 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:04:14,851 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:04:14,852 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:04:15,061 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:04:15,062 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:04:15,218 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:04:15,218 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-27 18:04:15,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:04:15 BoogieIcfgContainer [2024-06-27 18:04:15,218 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:04:15,220 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:04:15,220 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:04:15,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:04:15,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:04:12" (1/4) ... [2024-06-27 18:04:15,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a872df2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:04:15, skipping insertion in model container [2024-06-27 18:04:15,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:04:14" (2/4) ... [2024-06-27 18:04:15,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a872df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:04:15, skipping insertion in model container [2024-06-27 18:04:15,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:04:14" (3/4) ... [2024-06-27 18:04:15,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a872df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:04:15, skipping insertion in model container [2024-06-27 18:04:15,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:04:15" (4/4) ... [2024-06-27 18:04:15,226 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2024-06-27 18:04:15,264 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:04:15,265 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:04:15,265 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:04:15,328 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-27 18:04:15,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 46 transitions, 113 flow [2024-06-27 18:04:15,391 INFO L124 PetriNetUnfolderBase]: 7/43 cut-off events. [2024-06-27 18:04:15,392 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 18:04:15,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 43 events. 7/43 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-06-27 18:04:15,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 46 transitions, 113 flow [2024-06-27 18:04:15,399 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 42 transitions, 102 flow [2024-06-27 18:04:15,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:04:15,423 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;@751eb61e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:04:15,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:04:15,432 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:04:15,433 INFO L124 PetriNetUnfolderBase]: 4/12 cut-off events. [2024-06-27 18:04:15,433 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:04:15,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:04:15,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:04:15,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:04:15,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:04:15,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1768431740, now seen corresponding path program 1 times [2024-06-27 18:04:15,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:04:15,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925497467] [2024-06-27 18:04:15,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:04:15,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:04:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:04:15,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:04:15,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:04:15,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925497467] [2024-06-27 18:04:15,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925497467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:04:15,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:04:15,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:04:15,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527639282] [2024-06-27 18:04:15,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:04:15,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:04:15,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:04:15,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:04:15,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:04:15,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:04:15,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-06-27 18:04:15,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:04:15,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:04:15,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:04:16,071 INFO L124 PetriNetUnfolderBase]: 753/1199 cut-off events. [2024-06-27 18:04:16,071 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-06-27 18:04:16,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 1199 events. 753/1199 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5162 event pairs, 237 based on Foata normal form. 45/1103 useless extension candidates. Maximal degree in co-relation 2061. Up to 671 conditions per place. [2024-06-27 18:04:16,082 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 47 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-06-27 18:04:16,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 244 flow [2024-06-27 18:04:16,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:04:16,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:04:16,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-06-27 18:04:16,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6376811594202898 [2024-06-27 18:04:16,099 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 102 flow. Second operand 3 states and 88 transitions. [2024-06-27 18:04:16,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 244 flow [2024-06-27 18:04:16,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 58 transitions, 224 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 18:04:16,111 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 102 flow [2024-06-27 18:04:16,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2024-06-27 18:04:16,117 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -4 predicate places. [2024-06-27 18:04:16,118 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 102 flow [2024-06-27 18:04:16,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-06-27 18:04:16,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:04:16,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:04:16,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:04:16,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:04:16,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:04:16,120 INFO L85 PathProgramCache]: Analyzing trace with hash 481454725, now seen corresponding path program 1 times [2024-06-27 18:04:16,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:04:16,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346430430] [2024-06-27 18:04:16,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:04:16,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:04:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:04:16,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:04:16,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:04:16,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346430430] [2024-06-27 18:04:16,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346430430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:04:16,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:04:16,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:04:16,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547756844] [2024-06-27 18:04:16,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:04:16,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:04:16,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:04:16,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:04:16,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:04:16,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:04:16,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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) [2024-06-27 18:04:16,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:04:16,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:04:16,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:04:16,491 INFO L124 PetriNetUnfolderBase]: 1063/1727 cut-off events. [2024-06-27 18:04:16,491 INFO L125 PetriNetUnfolderBase]: For 264/264 co-relation queries the response was YES. [2024-06-27 18:04:16,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3504 conditions, 1727 events. 1063/1727 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8243 event pairs, 435 based on Foata normal form. 54/1598 useless extension candidates. Maximal degree in co-relation 909. Up to 926 conditions per place. [2024-06-27 18:04:16,501 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 71 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2024-06-27 18:04:16,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 85 transitions, 350 flow [2024-06-27 18:04:16,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:04:16,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:04:16,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-06-27 18:04:16,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2024-06-27 18:04:16,506 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 102 flow. Second operand 5 states and 140 transitions. [2024-06-27 18:04:16,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 85 transitions, 350 flow [2024-06-27 18:04:16,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 85 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:04:16,512 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 139 flow [2024-06-27 18:04:16,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2024-06-27 18:04:16,513 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-06-27 18:04:16,513 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 139 flow [2024-06-27 18:04:16,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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) [2024-06-27 18:04:16,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:04:16,517 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:04:16,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:04:16,518 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:04:16,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:04:16,518 INFO L85 PathProgramCache]: Analyzing trace with hash 944556155, now seen corresponding path program 1 times [2024-06-27 18:04:16,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:04:16,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377283817] [2024-06-27 18:04:16,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:04:16,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:04:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:04:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 18:04:16,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:04:16,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377283817] [2024-06-27 18:04:16,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377283817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:04:16,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:04:16,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:04:16,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594931632] [2024-06-27 18:04:16,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:04:16,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:04:16,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:04:16,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:04:16,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:04:16,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 18:04:16,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:04:16,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:04:16,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 18:04:16,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:04:16,893 INFO L124 PetriNetUnfolderBase]: 1555/2447 cut-off events. [2024-06-27 18:04:16,893 INFO L125 PetriNetUnfolderBase]: For 936/975 co-relation queries the response was YES. [2024-06-27 18:04:16,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5632 conditions, 2447 events. 1555/2447 cut-off events. For 936/975 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 11329 event pairs, 1062 based on Foata normal form. 44/2217 useless extension candidates. Maximal degree in co-relation 2727. Up to 1755 conditions per place. [2024-06-27 18:04:16,907 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 67 selfloop transitions, 15 changer transitions 0/92 dead transitions. [2024-06-27 18:04:16,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 92 transitions, 411 flow [2024-06-27 18:04:16,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:04:16,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:04:16,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-06-27 18:04:16,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5905797101449275 [2024-06-27 18:04:16,909 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 139 flow. Second operand 6 states and 163 transitions. [2024-06-27 18:04:16,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 92 transitions, 411 flow [2024-06-27 18:04:16,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 92 transitions, 402 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:04:16,914 INFO L231 Difference]: Finished difference. Result has 54 places, 58 transitions, 238 flow [2024-06-27 18:04:16,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=238, PETRI_PLACES=54, PETRI_TRANSITIONS=58} [2024-06-27 18:04:16,914 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2024-06-27 18:04:16,915 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 58 transitions, 238 flow [2024-06-27 18:04:16,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:04:16,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:04:16,915 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:04:16,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:04:16,916 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:04:16,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:04:16,916 INFO L85 PathProgramCache]: Analyzing trace with hash -432744480, now seen corresponding path program 1 times [2024-06-27 18:04:16,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:04:16,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679129481] [2024-06-27 18:04:16,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:04:16,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:04:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:04:17,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 18:04:17,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:04:17,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679129481] [2024-06-27 18:04:17,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679129481] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:04:17,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425233207] [2024-06-27 18:04:17,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:04:17,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:04:17,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:04:17,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:04:17,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 18:04:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:04:17,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-27 18:04:17,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:04:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 18:04:17,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:04:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 18:04:17,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425233207] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:04:17,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:04:17,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2024-06-27 18:04:17,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453080273] [2024-06-27 18:04:17,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:04:17,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 18:04:17,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:04:17,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 18:04:17,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-27 18:04:17,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:04:17,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 58 transitions, 238 flow. Second operand has 14 states, 14 states have (on average 14.285714285714286) internal successors, (200), 14 states have internal predecessors, (200), 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) [2024-06-27 18:04:17,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:04:17,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:04:17,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:04:17,773 INFO L124 PetriNetUnfolderBase]: 2109/3253 cut-off events. [2024-06-27 18:04:17,773 INFO L125 PetriNetUnfolderBase]: For 1361/1361 co-relation queries the response was YES. [2024-06-27 18:04:17,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7934 conditions, 3253 events. 2109/3253 cut-off events. For 1361/1361 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 15588 event pairs, 446 based on Foata normal form. 116/3017 useless extension candidates. Maximal degree in co-relation 4615. Up to 713 conditions per place. [2024-06-27 18:04:17,793 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 130 selfloop transitions, 40 changer transitions 0/178 dead transitions. [2024-06-27 18:04:17,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 178 transitions, 921 flow [2024-06-27 18:04:17,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:04:17,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:04:17,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 310 transitions. [2024-06-27 18:04:17,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183946488294314 [2024-06-27 18:04:17,796 INFO L175 Difference]: Start difference. First operand has 54 places, 58 transitions, 238 flow. Second operand 13 states and 310 transitions. [2024-06-27 18:04:17,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 178 transitions, 921 flow [2024-06-27 18:04:17,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 178 transitions, 921 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 18:04:17,805 INFO L231 Difference]: Finished difference. Result has 68 places, 77 transitions, 463 flow [2024-06-27 18:04:17,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=463, PETRI_PLACES=68, PETRI_TRANSITIONS=77} [2024-06-27 18:04:17,806 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 23 predicate places. [2024-06-27 18:04:17,806 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 77 transitions, 463 flow [2024-06-27 18:04:17,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.285714285714286) internal successors, (200), 14 states have internal predecessors, (200), 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) [2024-06-27 18:04:17,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:04:17,806 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] [2024-06-27 18:04:17,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 18:04:18,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:04:18,019 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:04:18,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:04:18,019 INFO L85 PathProgramCache]: Analyzing trace with hash 418821347, now seen corresponding path program 1 times [2024-06-27 18:04:18,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:04:18,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070784476] [2024-06-27 18:04:18,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:04:18,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:04:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:04:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:04:18,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:04:18,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070784476] [2024-06-27 18:04:18,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070784476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:04:18,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:04:18,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:04:18,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374138571] [2024-06-27 18:04:18,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:04:18,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:04:18,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:04:18,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:04:18,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:04:18,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 18:04:18,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 77 transitions, 463 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-06-27 18:04:18,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:04:18,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 18:04:18,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:04:18,569 INFO L124 PetriNetUnfolderBase]: 2736/4346 cut-off events. [2024-06-27 18:04:18,569 INFO L125 PetriNetUnfolderBase]: For 4979/5037 co-relation queries the response was YES. [2024-06-27 18:04:18,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11651 conditions, 4346 events. 2736/4346 cut-off events. For 4979/5037 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 22845 event pairs, 864 based on Foata normal form. 5/3827 useless extension candidates. Maximal degree in co-relation 6812. Up to 2364 conditions per place. [2024-06-27 18:04:18,595 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 95 selfloop transitions, 3 changer transitions 1/108 dead transitions. [2024-06-27 18:04:18,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 108 transitions, 809 flow [2024-06-27 18:04:18,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:04:18,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:04:18,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-06-27 18:04:18,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6956521739130435 [2024-06-27 18:04:18,596 INFO L175 Difference]: Start difference. First operand has 68 places, 77 transitions, 463 flow. Second operand 3 states and 96 transitions. [2024-06-27 18:04:18,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 108 transitions, 809 flow [2024-06-27 18:04:18,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 108 transitions, 747 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-27 18:04:18,605 INFO L231 Difference]: Finished difference. Result has 69 places, 79 transitions, 438 flow [2024-06-27 18:04:18,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=69, PETRI_TRANSITIONS=79} [2024-06-27 18:04:18,605 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2024-06-27 18:04:18,606 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 79 transitions, 438 flow [2024-06-27 18:04:18,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-06-27 18:04:18,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:04:18,606 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] [2024-06-27 18:04:18,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:04:18,606 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:04:18,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:04:18,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1007305353, now seen corresponding path program 1 times [2024-06-27 18:04:18,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:04:18,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301031661] [2024-06-27 18:04:18,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:04:18,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:04:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:04:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:04:18,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:04:18,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301031661] [2024-06-27 18:04:18,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301031661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:04:18,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:04:18,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:04:18,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479876496] [2024-06-27 18:04:18,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:04:18,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:04:18,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:04:18,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:04:18,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:04:18,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 18:04:18,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 79 transitions, 438 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:04:18,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:04:18,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 18:04:18,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:04:19,046 INFO L124 PetriNetUnfolderBase]: 2570/4319 cut-off events. [2024-06-27 18:04:19,047 INFO L125 PetriNetUnfolderBase]: For 4129/4200 co-relation queries the response was YES. [2024-06-27 18:04:19,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11470 conditions, 4319 events. 2570/4319 cut-off events. For 4129/4200 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 24535 event pairs, 1857 based on Foata normal form. 48/4216 useless extension candidates. Maximal degree in co-relation 6492. Up to 3176 conditions per place. [2024-06-27 18:04:19,075 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 85 selfloop transitions, 24 changer transitions 0/118 dead transitions. [2024-06-27 18:04:19,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 118 transitions, 801 flow [2024-06-27 18:04:19,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:04:19,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:04:19,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-06-27 18:04:19,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2024-06-27 18:04:19,076 INFO L175 Difference]: Start difference. First operand has 69 places, 79 transitions, 438 flow. Second operand 6 states and 168 transitions. [2024-06-27 18:04:19,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 118 transitions, 801 flow [2024-06-27 18:04:19,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 118 transitions, 796 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:04:19,085 INFO L231 Difference]: Finished difference. Result has 75 places, 81 transitions, 506 flow [2024-06-27 18:04:19,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=506, PETRI_PLACES=75, PETRI_TRANSITIONS=81} [2024-06-27 18:04:19,086 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 30 predicate places. [2024-06-27 18:04:19,086 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 81 transitions, 506 flow [2024-06-27 18:04:19,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:04:19,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:04:19,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:04:19,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:04:19,087 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:04:19,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:04:19,088 INFO L85 PathProgramCache]: Analyzing trace with hash -438158522, now seen corresponding path program 1 times [2024-06-27 18:04:19,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:04:19,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698799589] [2024-06-27 18:04:19,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:04:19,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:04:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:04:19,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 18:04:19,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:04:19,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698799589] [2024-06-27 18:04:19,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698799589] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:04:19,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056632810] [2024-06-27 18:04:19,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:04:19,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:04:19,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:04:19,164 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:04:19,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 18:04:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:04:19,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 18:04:19,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:04:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 18:04:19,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:04:19,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 18:04:19,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056632810] provided 1 perfect and 1 imperfect interpolant sequences [2024-06-27 18:04:19,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-06-27 18:04:19,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-06-27 18:04:19,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46319582] [2024-06-27 18:04:19,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:04:19,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:04:19,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:04:19,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:04:19,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:04:19,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 18:04:19,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 81 transitions, 506 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:04:19,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:04:19,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 18:04:19,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:04:19,749 INFO L124 PetriNetUnfolderBase]: 3099/4946 cut-off events. [2024-06-27 18:04:19,750 INFO L125 PetriNetUnfolderBase]: For 4939/4939 co-relation queries the response was YES. [2024-06-27 18:04:19,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14364 conditions, 4946 events. 3099/4946 cut-off events. For 4939/4939 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 26928 event pairs, 1241 based on Foata normal form. 185/4957 useless extension candidates. Maximal degree in co-relation 8087. Up to 2181 conditions per place. [2024-06-27 18:04:19,775 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 86 selfloop transitions, 9 changer transitions 15/118 dead transitions. [2024-06-27 18:04:19,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 118 transitions, 866 flow [2024-06-27 18:04:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:04:19,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:04:19,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-06-27 18:04:19,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6130434782608696 [2024-06-27 18:04:19,776 INFO L175 Difference]: Start difference. First operand has 75 places, 81 transitions, 506 flow. Second operand 5 states and 141 transitions. [2024-06-27 18:04:19,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 118 transitions, 866 flow [2024-06-27 18:04:19,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 118 transitions, 827 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:04:19,789 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 417 flow [2024-06-27 18:04:19,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2024-06-27 18:04:19,790 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-06-27 18:04:19,790 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 417 flow [2024-06-27 18:04:19,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:04:19,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:04:19,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:04:19,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-27 18:04:20,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-06-27 18:04:20,003 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:04:20,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:04:20,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1676632018, now seen corresponding path program 1 times [2024-06-27 18:04:20,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:04:20,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874368527] [2024-06-27 18:04:20,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:04:20,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:04:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:04:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:04:20,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:04:20,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874368527] [2024-06-27 18:04:20,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874368527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:04:20,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:04:20,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:04:20,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71600945] [2024-06-27 18:04:20,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:04:20,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:04:20,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:04:20,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:04:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:04:20,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 18:04:20,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 417 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2024-06-27 18:04:20,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:04:20,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 18:04:20,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:04:20,456 INFO L124 PetriNetUnfolderBase]: 2612/4432 cut-off events. [2024-06-27 18:04:20,456 INFO L125 PetriNetUnfolderBase]: For 7671/7671 co-relation queries the response was YES. [2024-06-27 18:04:20,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13306 conditions, 4432 events. 2612/4432 cut-off events. For 7671/7671 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 25595 event pairs, 1927 based on Foata normal form. 0/4101 useless extension candidates. Maximal degree in co-relation 8602. Up to 3433 conditions per place. [2024-06-27 18:04:20,481 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 44 selfloop transitions, 12 changer transitions 27/92 dead transitions. [2024-06-27 18:04:20,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 92 transitions, 657 flow [2024-06-27 18:04:20,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:04:20,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:04:20,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 18:04:20,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-06-27 18:04:20,482 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 417 flow. Second operand 6 states and 146 transitions. [2024-06-27 18:04:20,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 92 transitions, 657 flow [2024-06-27 18:04:20,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 92 transitions, 617 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:04:20,492 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 361 flow [2024-06-27 18:04:20,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=361, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-06-27 18:04:20,493 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 35 predicate places. [2024-06-27 18:04:20,493 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 361 flow [2024-06-27 18:04:20,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2024-06-27 18:04:20,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:04:20,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:04:20,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:04:20,494 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:04:20,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:04:20,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1261372728, now seen corresponding path program 1 times [2024-06-27 18:04:20,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:04:20,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455103482] [2024-06-27 18:04:20,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:04:20,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:04:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:04:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 18:04:20,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:04:20,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455103482] [2024-06-27 18:04:20,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455103482] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:04:20,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279259140] [2024-06-27 18:04:20,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:04:20,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:04:20,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:04:20,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:04:20,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 18:04:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:04:20,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 18:04:20,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:04:20,702 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 18:04:20,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:04:20,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 18:04:20,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279259140] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:04:20,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:04:20,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-06-27 18:04:20,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26649999] [2024-06-27 18:04:20,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:04:20,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:04:20,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:04:20,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:04:20,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:04:20,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 18:04:20,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 361 flow. Second operand has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 9 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:04:20,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:04:20,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 18:04:20,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:04:21,174 INFO L124 PetriNetUnfolderBase]: 2870/5130 cut-off events. [2024-06-27 18:04:21,175 INFO L125 PetriNetUnfolderBase]: For 5827/5827 co-relation queries the response was YES. [2024-06-27 18:04:21,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13880 conditions, 5130 events. 2870/5130 cut-off events. For 5827/5827 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 32484 event pairs, 886 based on Foata normal form. 256/5077 useless extension candidates. Maximal degree in co-relation 8663. Up to 1729 conditions per place. [2024-06-27 18:04:21,207 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 76 selfloop transitions, 19 changer transitions 0/104 dead transitions. [2024-06-27 18:04:21,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 104 transitions, 753 flow [2024-06-27 18:04:21,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:04:21,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:04:21,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-27 18:04:21,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673913043478261 [2024-06-27 18:04:21,209 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 361 flow. Second operand 8 states and 172 transitions. [2024-06-27 18:04:21,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 104 transitions, 753 flow [2024-06-27 18:04:21,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 104 transitions, 663 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 18:04:21,223 INFO L231 Difference]: Finished difference. Result has 72 places, 67 transitions, 348 flow [2024-06-27 18:04:21,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=348, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2024-06-27 18:04:21,224 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 27 predicate places. [2024-06-27 18:04:21,224 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 348 flow [2024-06-27 18:04:21,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 9 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:04:21,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:04:21,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:04:21,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-27 18:04:21,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:04:21,436 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:04:21,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:04:21,437 INFO L85 PathProgramCache]: Analyzing trace with hash 889073511, now seen corresponding path program 1 times [2024-06-27 18:04:21,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:04:21,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802603957] [2024-06-27 18:04:21,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:04:21,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:04:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:04:21,581 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-27 18:04:21,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:04:21,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802603957] [2024-06-27 18:04:21,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802603957] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:04:21,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720189422] [2024-06-27 18:04:21,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:04:21,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:04:21,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:04:21,609 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:04:21,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-27 18:04:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:04:21,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 18:04:21,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:04:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-27 18:04:21,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:04:21,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-27 18:04:21,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720189422] provided 1 perfect and 1 imperfect interpolant sequences [2024-06-27 18:04:21,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-06-27 18:04:21,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-06-27 18:04:21,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280931964] [2024-06-27 18:04:21,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:04:21,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:04:21,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:04:21,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:04:21,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:04:21,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 18:04:21,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 348 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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) [2024-06-27 18:04:21,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:04:21,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 18:04:21,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:04:22,219 INFO L124 PetriNetUnfolderBase]: 2132/3903 cut-off events. [2024-06-27 18:04:22,220 INFO L125 PetriNetUnfolderBase]: For 4591/4591 co-relation queries the response was YES. [2024-06-27 18:04:22,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10852 conditions, 3903 events. 2132/3903 cut-off events. For 4591/4591 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 24251 event pairs, 1048 based on Foata normal form. 201/3906 useless extension candidates. Maximal degree in co-relation 6864. Up to 2277 conditions per place. [2024-06-27 18:04:22,252 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 76 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2024-06-27 18:04:22,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 92 transitions, 631 flow [2024-06-27 18:04:22,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:04:22,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:04:22,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-27 18:04:22,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347826086956522 [2024-06-27 18:04:22,253 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 348 flow. Second operand 5 states and 123 transitions. [2024-06-27 18:04:22,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 92 transitions, 631 flow [2024-06-27 18:04:22,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 92 transitions, 628 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:04:22,260 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 366 flow [2024-06-27 18:04:22,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=366, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2024-06-27 18:04:22,262 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 30 predicate places. [2024-06-27 18:04:22,262 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 366 flow [2024-06-27 18:04:22,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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) [2024-06-27 18:04:22,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:04:22,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:04:22,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-27 18:04:22,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:04:22,475 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:04:22,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:04:22,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1536372577, now seen corresponding path program 1 times [2024-06-27 18:04:22,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:04:22,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889282098] [2024-06-27 18:04:22,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:04:22,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:04:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:04:23,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 18:04:23,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:04:23,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889282098] [2024-06-27 18:04:23,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889282098] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:04:23,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657671392] [2024-06-27 18:04:23,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:04:23,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:04:23,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:04:23,815 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:04:23,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-06-27 18:04:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:04:23,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 37 conjunts are in the unsatisfiable core [2024-06-27 18:04:23,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:04:23,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-06-27 18:04:23,976 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-06-27 18:04:23,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-06-27 18:04:24,020 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-06-27 18:04:24,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2024-06-27 18:04:24,224 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-06-27 18:04:24,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2024-06-27 18:04:24,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:04:24,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2024-06-27 18:04:24,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 18:04:24,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:04:24,710 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:04:24,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 356 treesize of output 336 [2024-06-27 18:04:25,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 159 [2024-06-27 18:04:25,774 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:04:25,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 149 [2024-06-27 18:04:26,250 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:04:26,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 1 [2024-06-27 18:04:26,264 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:04:26,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2024-06-27 18:04:26,332 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:04:26,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 149 [2024-06-27 18:04:27,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:04:27,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 149 [2024-06-27 18:04:28,094 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:04:28,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 1 [2024-06-27 18:04:28,117 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:04:28,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 1 [2024-06-27 18:04:28,165 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:04:28,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 1 [2024-06-27 18:04:28,196 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:04:28,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 1 [2024-06-27 18:04:28,224 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:04:28,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 1 [2024-06-27 18:04:28,235 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:04:28,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 1 [2024-06-27 18:04:28,248 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:04:28,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-06-27 18:04:29,024 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:04:29,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 43 [2024-06-27 18:05:11,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2024-06-27 18:05:12,146 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:05:12,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 1 [2024-06-27 18:05:12,162 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:05:12,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-06-27 18:05:13,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2024-06-27 18:05:13,814 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:05:13,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 43 [2024-06-27 18:05:48,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 59 [2024-06-27 18:05:48,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 429 treesize of output 361 [2024-06-27 18:05:48,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2024-06-27 18:05:48,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 71 [2024-06-27 18:05:53,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 59 [2024-06-27 18:05:53,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 302 treesize of output 250 [2024-06-27 18:05:53,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-06-27 18:05:53,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2024-06-27 18:05:54,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-06-27 18:05:54,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2024-06-27 18:05:55,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2024-06-27 18:05:55,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 234 treesize of output 194 [2024-06-27 18:05:55,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2024-06-27 18:05:55,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 71 [2024-06-27 18:05:56,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2024-06-27 18:05:56,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 129 [2024-06-27 18:05:56,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-06-27 18:05:56,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2024-06-27 18:05:57,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-06-27 18:05:57,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2024-06-27 18:05:58,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 81 [2024-06-27 18:05:58,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 374 treesize of output 310 [2024-06-27 18:05:59,048 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:05:59,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2024-06-27 18:05:59,059 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:05:59,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 1 [2024-06-27 18:05:59,073 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:05:59,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 1 [2024-06-27 18:05:59,082 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:05:59,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2024-06-27 18:05:59,096 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:05:59,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 1 [2024-06-27 18:05:59,105 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:05:59,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2024-06-27 18:05:59,126 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:05:59,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 1 [2024-06-27 18:05:59,135 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:05:59,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2024-06-27 18:05:59,168 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:05:59,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 1 [2024-06-27 18:05:59,216 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:05:59,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 1 [2024-06-27 18:05:59,230 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:05:59,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 1 [2024-06-27 18:05:59,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 59 [2024-06-27 18:05:59,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 429 treesize of output 361 [2024-06-27 18:05:59,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2024-06-27 18:05:59,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 71 [2024-06-27 18:06:01,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 59 [2024-06-27 18:06:01,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 87 [2024-06-27 18:06:02,982 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-06-27 18:06:03,011 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-06-27 18:06:04,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-06-27 18:06:04,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 57 [2024-06-27 18:06:05,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 43 [2024-06-27 18:06:05,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 117 [2024-06-27 18:06:24,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-06-27 18:06:24,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 57 [2024-06-27 18:06:25,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2024-06-27 18:06:25,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 129 [2024-06-27 18:06:25,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-06-27 18:06:25,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2024-06-27 18:06:25,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-06-27 18:06:25,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2024-06-27 18:06:26,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-06-27 18:06:26,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2024-06-27 18:06:26,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2024-06-27 18:06:26,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 234 treesize of output 194 [2024-06-27 18:06:27,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2024-06-27 18:06:27,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 71 [2024-06-27 18:06:28,209 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-06-27 18:06:28,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 81 [2024-06-27 18:06:28,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 105 [2024-06-27 18:06:54,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2024-06-27 18:06:54,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 71 [2024-06-27 18:06:55,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-06-27 18:06:55,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2024-06-27 18:06:56,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-06-27 18:06:56,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2024-06-27 18:06:57,100 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:06:57,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 1 [2024-06-27 18:06:57,109 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:06:57,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2024-06-27 18:06:57,117 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:06:57,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2024-06-27 18:06:57,131 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:06:57,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2024-06-27 18:06:57,146 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:06:57,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 1 [2024-06-27 18:06:57,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:06:57,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-06-27 18:06:57,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2024-06-27 18:06:58,307 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:06:58,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 1 [2024-06-27 18:06:58,316 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:06:58,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2024-06-27 18:06:58,339 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:06:58,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 1 [2024-06-27 18:06:58,351 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:06:58,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 1 [2024-06-27 18:06:58,361 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:06:58,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2024-06-27 18:06:58,416 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:06:58,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 1 [2024-06-27 18:06:58,438 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:06:58,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 1 [2024-06-27 18:06:58,450 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-06-27 18:06:58,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 1 [2024-06-27 18:06:59,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 18:06:59,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657671392] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:06:59,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:06:59,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 35 [2024-06-27 18:06:59,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848783208] [2024-06-27 18:06:59,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:06:59,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-06-27 18:06:59,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:06:59,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-06-27 18:06:59,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1074, Unknown=0, NotChecked=0, Total=1260 [2024-06-27 18:06:59,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:06:59,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 366 flow. Second operand has 36 states, 36 states have (on average 13.61111111111111) internal successors, (490), 36 states have internal predecessors, (490), 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) [2024-06-27 18:06:59,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:06:59,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:06:59,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:07:01,465 INFO L124 PetriNetUnfolderBase]: 3191/6303 cut-off events. [2024-06-27 18:07:01,466 INFO L125 PetriNetUnfolderBase]: For 8394/8394 co-relation queries the response was YES. [2024-06-27 18:07:01,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17535 conditions, 6303 events. 3191/6303 cut-off events. For 8394/8394 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 45758 event pairs, 439 based on Foata normal form. 3/5945 useless extension candidates. Maximal degree in co-relation 12058. Up to 2703 conditions per place. [2024-06-27 18:07:01,513 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 155 selfloop transitions, 75 changer transitions 1/241 dead transitions. [2024-06-27 18:07:01,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 241 transitions, 1677 flow [2024-06-27 18:07:01,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-06-27 18:07:01,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-06-27 18:07:01,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 423 transitions. [2024-06-27 18:07:01,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3998109640831758 [2024-06-27 18:07:01,516 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 366 flow. Second operand 23 states and 423 transitions. [2024-06-27 18:07:01,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 241 transitions, 1677 flow [2024-06-27 18:07:01,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 241 transitions, 1635 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 18:07:01,528 INFO L231 Difference]: Finished difference. Result has 101 places, 132 transitions, 1010 flow [2024-06-27 18:07:01,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1010, PETRI_PLACES=101, PETRI_TRANSITIONS=132} [2024-06-27 18:07:01,529 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 56 predicate places. [2024-06-27 18:07:01,529 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 132 transitions, 1010 flow [2024-06-27 18:07:01,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 13.61111111111111) internal successors, (490), 36 states have internal predecessors, (490), 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) [2024-06-27 18:07:01,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:07:01,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:07:01,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-06-27 18:07:01,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-06-27 18:07:01,744 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:07:01,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:07:01,744 INFO L85 PathProgramCache]: Analyzing trace with hash 992512565, now seen corresponding path program 2 times [2024-06-27 18:07:01,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:07:01,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411328622] [2024-06-27 18:07:01,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:07:01,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:07:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:07:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 18:07:02,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:07:02,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411328622] [2024-06-27 18:07:02,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411328622] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:07:02,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829033283] [2024-06-27 18:07:02,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 18:07:02,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:07:02,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:07:02,903 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:07:02,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-06-27 18:07:03,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 18:07:03,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 18:07:03,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 53 conjunts are in the unsatisfiable core [2024-06-27 18:07:03,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:07:03,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-06-27 18:07:03,066 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-06-27 18:07:03,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-06-27 18:07:03,151 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-06-27 18:07:03,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-06-27 18:07:03,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2024-06-27 18:07:03,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2024-06-27 18:07:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 18:07:04,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:07:04,242 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:07:04,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 356 treesize of output 336 [2024-06-27 18:07:04,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 73 [2024-06-27 18:07:04,432 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:07:04,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 198 treesize of output 190 [2024-06-27 18:07:04,456 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:07:04,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 146 treesize of output 134 [2024-06-27 18:07:12,670 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-06-27 18:07:18,283 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-06-27 18:07:24,185 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-06-27 18:07:26,721 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-06-27 18:07:46,567 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-06-27 18:07:46,644 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-06-27 18:07:48,691 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-06-27 18:07:48,781 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-06-27 18:07:53,397 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-06-27 18:07:53,546 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-06-27 18:07:53,662 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-06-27 18:07:53,720 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-06-27 18:07:54,214 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-06-27 18:07:54,404 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-06-27 18:07:54,570 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-06-27 18:08:07,938 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:08:07,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 438 treesize of output 374 [2024-06-27 18:08:10,034 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-06-27 18:10:41,600 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-06-27 18:11:06,285 WARN L293 SmtUtils]: Spent 12.13s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-06-27 18:14:01,114 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-06-27 18:14:42,388 WARN L293 SmtUtils]: Spent 12.09s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-06-27 18:15:23,613 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-06-27 18:16:16,536 WARN L293 SmtUtils]: Spent 8.99s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-06-27 18:16:36,764 WARN L293 SmtUtils]: Spent 12.14s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-06-27 18:17:01,133 WARN L293 SmtUtils]: Spent 8.16s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-06-27 18:17:09,185 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-06-27 18:17:17,306 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15