./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe033_tso.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/pthread-wmm/safe033_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe033_tso.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 [2024-06-28 01:02:22,777 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:02:22,854 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:02:22,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:02:22,862 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:02:22,890 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:02:22,892 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:02:22,892 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:02:22,893 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:02:22,896 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:02:22,897 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:02:22,897 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:02:22,897 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:02:22,899 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:02:22,899 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:02:22,899 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:02:22,900 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:02:22,900 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:02:22,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:02:22,900 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:02:22,901 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:02:22,901 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:02:22,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:02:22,901 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:02:22,902 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:02:22,902 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:02:22,902 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:02:22,902 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:02:22,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:02:22,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:02:22,904 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:02:22,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:02:22,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:02:22,905 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:02:22,905 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:02:22,905 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:02:22,905 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:02:22,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:02:22,906 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:02:22,906 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:02:22,906 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:02:22,907 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:02:22,907 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:02:22,907 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:02:23,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:02:23,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:02:23,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:02:23,179 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:02:23,179 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:02:23,180 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe033_tso.yml/witness.yml [2024-06-28 01:02:23,310 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:02:23,310 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:02:23,311 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-06-28 01:02:24,424 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:02:24,653 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:02:24,655 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-06-28 01:02:24,666 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/761e82ad3/830ea53fd8214d87be18de2408922957/FLAGc2db779b9 [2024-06-28 01:02:24,681 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/761e82ad3/830ea53fd8214d87be18de2408922957 [2024-06-28 01:02:24,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:02:24,683 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:02:24,685 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:02:24,685 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:02:24,690 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:02:24,691 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:02:23" (1/2) ... [2024-06-28 01:02:24,692 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f6fc560 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:02:24, skipping insertion in model container [2024-06-28 01:02:24,692 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:02:23" (1/2) ... [2024-06-28 01:02:24,693 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@998683d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:02:24, skipping insertion in model container [2024-06-28 01:02:24,693 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:02:24" (2/2) ... [2024-06-28 01:02:24,694 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f6fc560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:24, skipping insertion in model container [2024-06-28 01:02:24,694 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:02:24" (2/2) ... [2024-06-28 01:02:24,694 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:02:24,731 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:02:24,732 INFO L97 edCorrectnessWitness]: Location invariant before [L764-L764] ((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (((0 <= __unbuffered_cnt && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:02:24,732 INFO L97 edCorrectnessWitness]: Location invariant before [L763-L763] ((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (((0 <= __unbuffered_cnt && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:02:24,732 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:02:24,732 INFO L106 edCorrectnessWitness]: ghost_update [L761-L761] multithreaded = 1; [2024-06-28 01:02:24,765 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:02:24,952 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i[945,958] [2024-06-28 01:02:25,087 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:02:25,094 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:02:25,124 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:02:25,181 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:02:25,212 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:02:25,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:25 WrapperNode [2024-06-28 01:02:25,213 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:02:25,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:02:25,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:02:25,215 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:02:25,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:25" (1/1) ... [2024-06-28 01:02:25,239 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:25" (1/1) ... [2024-06-28 01:02:25,259 INFO L138 Inliner]: procedures = 174, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2024-06-28 01:02:25,261 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:02:25,262 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:02:25,262 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:02:25,262 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:02:25,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:25" (1/1) ... [2024-06-28 01:02:25,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:25" (1/1) ... [2024-06-28 01:02:25,271 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:25" (1/1) ... [2024-06-28 01:02:25,283 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:02:25,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:25" (1/1) ... [2024-06-28 01:02:25,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:25" (1/1) ... [2024-06-28 01:02:25,316 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:25" (1/1) ... [2024-06-28 01:02:25,329 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:25" (1/1) ... [2024-06-28 01:02:25,331 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:25" (1/1) ... [2024-06-28 01:02:25,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:25" (1/1) ... [2024-06-28 01:02:25,334 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:02:25,335 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:02:25,335 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:02:25,335 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:02:25,336 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:25" (1/1) ... [2024-06-28 01:02:25,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:02:25,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:02:25,385 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) [2024-06-28 01:02:25,387 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 [2024-06-28 01:02:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:02:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:02:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:02:25,414 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:02:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:02:25,414 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:02:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:02:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:02:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:02:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:02:25,416 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:02:25,521 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:02:25,523 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:02:25,653 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:02:25,653 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:02:25,763 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:02:25,767 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:02:25,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:02:25 BoogieIcfgContainer [2024-06-28 01:02:25,767 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:02:25,771 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:02:25,771 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:02:25,774 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:02:25,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:02:23" (1/4) ... [2024-06-28 01:02:25,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f31a31 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:02:25, skipping insertion in model container [2024-06-28 01:02:25,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:02:24" (2/4) ... [2024-06-28 01:02:25,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f31a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:02:25, skipping insertion in model container [2024-06-28 01:02:25,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:25" (3/4) ... [2024-06-28 01:02:25,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f31a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:02:25, skipping insertion in model container [2024-06-28 01:02:25,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:02:25" (4/4) ... [2024-06-28 01:02:25,779 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2024-06-28 01:02:25,795 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:02:25,796 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 01:02:25,796 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:02:25,837 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:02:25,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 35 transitions, 78 flow [2024-06-28 01:02:25,915 INFO L124 PetriNetUnfolderBase]: 1/33 cut-off events. [2024-06-28 01:02:25,916 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:02:25,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 33 events. 1/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-06-28 01:02:25,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 35 transitions, 78 flow [2024-06-28 01:02:25,923 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 30 transitions, 66 flow [2024-06-28 01:02:25,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:02:25,947 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;@16ffb917, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:02:25,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-28 01:02:25,953 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:02:25,953 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 01:02:25,953 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:02:25,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:25,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:02:25,955 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:25,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:25,960 INFO L85 PathProgramCache]: Analyzing trace with hash 178530894, now seen corresponding path program 1 times [2024-06-28 01:02:25,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:25,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416905185] [2024-06-28 01:02:25,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:25,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:26,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:26,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416905185] [2024-06-28 01:02:26,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416905185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:26,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:26,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:02:26,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583488626] [2024-06-28 01:02:26,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:26,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:02:26,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:26,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:02:26,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:02:26,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2024-06-28 01:02:26,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-06-28 01:02:26,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:26,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2024-06-28 01:02:26,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:26,551 INFO L124 PetriNetUnfolderBase]: 145/318 cut-off events. [2024-06-28 01:02:26,551 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-28 01:02:26,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 318 events. 145/318 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1496 event pairs, 93 based on Foata normal form. 1/298 useless extension candidates. Maximal degree in co-relation 581. Up to 253 conditions per place. [2024-06-28 01:02:26,557 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 22 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-06-28 01:02:26,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 38 transitions, 135 flow [2024-06-28 01:02:26,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:02:26,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:02:26,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-06-28 01:02:26,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-06-28 01:02:26,571 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 66 flow. Second operand 3 states and 75 transitions. [2024-06-28 01:02:26,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 38 transitions, 135 flow [2024-06-28 01:02:26,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:02:26,576 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 85 flow [2024-06-28 01:02:26,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-06-28 01:02:26,581 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2024-06-28 01:02:26,581 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 85 flow [2024-06-28 01:02:26,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-06-28 01:02:26,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:26,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:26,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:02:26,583 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:26,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:26,584 INFO L85 PathProgramCache]: Analyzing trace with hash -230465875, now seen corresponding path program 1 times [2024-06-28 01:02:26,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:26,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418079512] [2024-06-28 01:02:26,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:26,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:26,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:26,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418079512] [2024-06-28 01:02:26,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418079512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:26,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:26,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:02:26,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331856499] [2024-06-28 01:02:26,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:26,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:02:26,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:26,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:02:26,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:02:26,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2024-06-28 01:02:26,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:26,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:26,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2024-06-28 01:02:26,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:26,863 INFO L124 PetriNetUnfolderBase]: 142/299 cut-off events. [2024-06-28 01:02:26,864 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-06-28 01:02:26,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 299 events. 142/299 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1377 event pairs, 58 based on Foata normal form. 2/296 useless extension candidates. Maximal degree in co-relation 633. Up to 235 conditions per place. [2024-06-28 01:02:26,871 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 28 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2024-06-28 01:02:26,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 185 flow [2024-06-28 01:02:26,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:02:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:02:26,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-06-28 01:02:26,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7071428571428572 [2024-06-28 01:02:26,876 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 85 flow. Second operand 4 states and 99 transitions. [2024-06-28 01:02:26,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 185 flow [2024-06-28 01:02:26,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:02:26,880 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 109 flow [2024-06-28 01:02:26,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-06-28 01:02:26,881 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2024-06-28 01:02:26,881 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 109 flow [2024-06-28 01:02:26,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:26,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:26,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:26,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:02:26,883 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:26,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:26,886 INFO L85 PathProgramCache]: Analyzing trace with hash 942246249, now seen corresponding path program 1 times [2024-06-28 01:02:26,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:26,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115863739] [2024-06-28 01:02:26,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:26,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:27,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:27,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:27,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115863739] [2024-06-28 01:02:27,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115863739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:27,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:27,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:02:27,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482752223] [2024-06-28 01:02:27,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:27,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:02:27,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:27,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:02:27,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:02:27,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:27,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-06-28 01:02:27,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:27,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:27,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:27,169 INFO L124 PetriNetUnfolderBase]: 181/376 cut-off events. [2024-06-28 01:02:27,170 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2024-06-28 01:02:27,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 376 events. 181/376 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1818 event pairs, 108 based on Foata normal form. 1/371 useless extension candidates. Maximal degree in co-relation 866. Up to 306 conditions per place. [2024-06-28 01:02:27,172 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 28 selfloop transitions, 5 changer transitions 0/45 dead transitions. [2024-06-28 01:02:27,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 201 flow [2024-06-28 01:02:27,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:02:27,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:02:27,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-06-28 01:02:27,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-06-28 01:02:27,179 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 109 flow. Second operand 4 states and 92 transitions. [2024-06-28 01:02:27,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 201 flow [2024-06-28 01:02:27,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 192 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:02:27,183 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 125 flow [2024-06-28 01:02:27,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-28 01:02:27,184 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2024-06-28 01:02:27,184 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 125 flow [2024-06-28 01:02:27,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-06-28 01:02:27,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:27,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:27,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:02:27,185 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:27,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:27,186 INFO L85 PathProgramCache]: Analyzing trace with hash 487576035, now seen corresponding path program 1 times [2024-06-28 01:02:27,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:27,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206593680] [2024-06-28 01:02:27,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:27,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:27,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:27,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206593680] [2024-06-28 01:02:27,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206593680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:27,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:27,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:02:27,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142433328] [2024-06-28 01:02:27,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:27,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:02:27,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:27,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:02:27,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:02:27,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:27,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:27,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:27,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:27,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:27,495 INFO L124 PetriNetUnfolderBase]: 177/355 cut-off events. [2024-06-28 01:02:27,495 INFO L125 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2024-06-28 01:02:27,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 894 conditions, 355 events. 177/355 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1676 event pairs, 14 based on Foata normal form. 4/357 useless extension candidates. Maximal degree in co-relation 879. Up to 253 conditions per place. [2024-06-28 01:02:27,499 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 39 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2024-06-28 01:02:27,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 269 flow [2024-06-28 01:02:27,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:02:27,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:02:27,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 01:02:27,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2024-06-28 01:02:27,501 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 125 flow. Second operand 6 states and 137 transitions. [2024-06-28 01:02:27,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 269 flow [2024-06-28 01:02:27,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 260 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:02:27,505 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 141 flow [2024-06-28 01:02:27,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-06-28 01:02:27,507 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-06-28 01:02:27,507 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 141 flow [2024-06-28 01:02:27,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:27,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:27,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:27,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:02:27,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:27,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:27,508 INFO L85 PathProgramCache]: Analyzing trace with hash -835474674, now seen corresponding path program 1 times [2024-06-28 01:02:27,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:27,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105067918] [2024-06-28 01:02:27,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:27,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:27,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:27,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105067918] [2024-06-28 01:02:27,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105067918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:27,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:27,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:02:27,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583819305] [2024-06-28 01:02:27,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:27,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:02:27,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:27,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:02:27,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:02:27,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:27,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 141 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) [2024-06-28 01:02:27,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:27,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:27,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:27,709 INFO L124 PetriNetUnfolderBase]: 183/387 cut-off events. [2024-06-28 01:02:27,710 INFO L125 PetriNetUnfolderBase]: For 403/403 co-relation queries the response was YES. [2024-06-28 01:02:27,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 387 events. 183/387 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1899 event pairs, 40 based on Foata normal form. 2/385 useless extension candidates. Maximal degree in co-relation 1000. Up to 260 conditions per place. [2024-06-28 01:02:27,713 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 33 selfloop transitions, 11 changer transitions 0/56 dead transitions. [2024-06-28 01:02:27,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 56 transitions, 287 flow [2024-06-28 01:02:27,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:02:27,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:02:27,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-06-28 01:02:27,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6628571428571428 [2024-06-28 01:02:27,715 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 141 flow. Second operand 5 states and 116 transitions. [2024-06-28 01:02:27,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 56 transitions, 287 flow [2024-06-28 01:02:27,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 271 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 01:02:27,720 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 191 flow [2024-06-28 01:02:27,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-28 01:02:27,725 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 13 predicate places. [2024-06-28 01:02:27,725 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 191 flow [2024-06-28 01:02:27,725 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) [2024-06-28 01:02:27,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:27,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:27,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:02:27,728 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:27,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:27,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1249573128, now seen corresponding path program 1 times [2024-06-28 01:02:27,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:27,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78347694] [2024-06-28 01:02:27,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:27,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:27,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:27,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78347694] [2024-06-28 01:02:27,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78347694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:27,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:27,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:02:27,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486876004] [2024-06-28 01:02:27,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:27,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:02:27,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:27,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:02:27,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:02:27,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:27,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 191 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) [2024-06-28 01:02:27,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:27,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:27,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:27,925 INFO L124 PetriNetUnfolderBase]: 190/394 cut-off events. [2024-06-28 01:02:27,926 INFO L125 PetriNetUnfolderBase]: For 556/556 co-relation queries the response was YES. [2024-06-28 01:02:27,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 394 events. 190/394 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1927 event pairs, 40 based on Foata normal form. 1/390 useless extension candidates. Maximal degree in co-relation 1166. Up to 264 conditions per place. [2024-06-28 01:02:27,929 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 36 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-28 01:02:27,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 350 flow [2024-06-28 01:02:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:02:27,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:02:27,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-28 01:02:27,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-06-28 01:02:27,930 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 191 flow. Second operand 5 states and 120 transitions. [2024-06-28 01:02:27,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 350 flow [2024-06-28 01:02:27,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 331 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 01:02:27,934 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 218 flow [2024-06-28 01:02:27,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-28 01:02:27,934 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 16 predicate places. [2024-06-28 01:02:27,935 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 218 flow [2024-06-28 01:02:27,935 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) [2024-06-28 01:02:27,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:27,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:27,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:02:27,936 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:27,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:27,936 INFO L85 PathProgramCache]: Analyzing trace with hash -109363606, now seen corresponding path program 2 times [2024-06-28 01:02:27,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:27,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358872467] [2024-06-28 01:02:27,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:27,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:28,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:28,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358872467] [2024-06-28 01:02:28,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358872467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:28,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:28,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:02:28,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120302890] [2024-06-28 01:02:28,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:28,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:02:28,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:28,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:02:28,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:02:28,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:28,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 218 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) [2024-06-28 01:02:28,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:28,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:28,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:28,128 INFO L124 PetriNetUnfolderBase]: 185/395 cut-off events. [2024-06-28 01:02:28,128 INFO L125 PetriNetUnfolderBase]: For 680/680 co-relation queries the response was YES. [2024-06-28 01:02:28,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1194 conditions, 395 events. 185/395 cut-off events. For 680/680 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1941 event pairs, 43 based on Foata normal form. 2/391 useless extension candidates. Maximal degree in co-relation 1174. Up to 259 conditions per place. [2024-06-28 01:02:28,131 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 33 selfloop transitions, 12 changer transitions 0/57 dead transitions. [2024-06-28 01:02:28,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 57 transitions, 334 flow [2024-06-28 01:02:28,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:02:28,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:02:28,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-28 01:02:28,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-06-28 01:02:28,132 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 218 flow. Second operand 5 states and 115 transitions. [2024-06-28 01:02:28,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 57 transitions, 334 flow [2024-06-28 01:02:28,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 315 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 01:02:28,136 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 230 flow [2024-06-28 01:02:28,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-28 01:02:28,137 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 19 predicate places. [2024-06-28 01:02:28,137 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 230 flow [2024-06-28 01:02:28,137 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) [2024-06-28 01:02:28,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:28,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:28,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:02:28,138 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:28,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:28,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1447627007, now seen corresponding path program 1 times [2024-06-28 01:02:28,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:28,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460230574] [2024-06-28 01:02:28,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:28,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:28,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:28,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460230574] [2024-06-28 01:02:28,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460230574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:28,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:28,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:02:28,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826375738] [2024-06-28 01:02:28,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:28,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:02:28,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:28,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:02:28,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:02:28,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:28,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:28,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:28,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:28,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:28,406 INFO L124 PetriNetUnfolderBase]: 192/402 cut-off events. [2024-06-28 01:02:28,406 INFO L125 PetriNetUnfolderBase]: For 869/869 co-relation queries the response was YES. [2024-06-28 01:02:28,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1239 conditions, 402 events. 192/402 cut-off events. For 869/869 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1992 event pairs, 41 based on Foata normal form. 4/401 useless extension candidates. Maximal degree in co-relation 1218. Up to 244 conditions per place. [2024-06-28 01:02:28,409 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 35 selfloop transitions, 15 changer transitions 0/62 dead transitions. [2024-06-28 01:02:28,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 368 flow [2024-06-28 01:02:28,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:02:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:02:28,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 01:02:28,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-28 01:02:28,411 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 230 flow. Second operand 6 states and 135 transitions. [2024-06-28 01:02:28,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 368 flow [2024-06-28 01:02:28,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 332 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 01:02:28,414 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 235 flow [2024-06-28 01:02:28,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=235, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-06-28 01:02:28,415 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 20 predicate places. [2024-06-28 01:02:28,415 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 235 flow [2024-06-28 01:02:28,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:28,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:28,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:28,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:02:28,416 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:28,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:28,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1755815577, now seen corresponding path program 1 times [2024-06-28 01:02:28,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:28,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969395330] [2024-06-28 01:02:28,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:28,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:28,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:28,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969395330] [2024-06-28 01:02:28,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969395330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:28,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:28,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:02:28,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862821323] [2024-06-28 01:02:28,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:28,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:02:28,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:28,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:02:28,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:02:28,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:28,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:28,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:28,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:28,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:28,647 INFO L124 PetriNetUnfolderBase]: 199/411 cut-off events. [2024-06-28 01:02:28,647 INFO L125 PetriNetUnfolderBase]: For 856/856 co-relation queries the response was YES. [2024-06-28 01:02:28,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313 conditions, 411 events. 199/411 cut-off events. For 856/856 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2028 event pairs, 43 based on Foata normal form. 1/408 useless extension candidates. Maximal degree in co-relation 1291. Up to 309 conditions per place. [2024-06-28 01:02:28,651 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 48 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-28 01:02:28,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 407 flow [2024-06-28 01:02:28,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:02:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:02:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 01:02:28,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2024-06-28 01:02:28,652 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 235 flow. Second operand 6 states and 137 transitions. [2024-06-28 01:02:28,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 407 flow [2024-06-28 01:02:28,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 372 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:02:28,657 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 237 flow [2024-06-28 01:02:28,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-06-28 01:02:28,658 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 22 predicate places. [2024-06-28 01:02:28,658 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 237 flow [2024-06-28 01:02:28,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:28,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:28,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:28,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:02:28,660 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:28,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:28,660 INFO L85 PathProgramCache]: Analyzing trace with hash 248325671, now seen corresponding path program 2 times [2024-06-28 01:02:28,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:28,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726023711] [2024-06-28 01:02:28,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:28,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:28,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:28,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:28,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726023711] [2024-06-28 01:02:28,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726023711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:28,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:28,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:02:28,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18861579] [2024-06-28 01:02:28,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:28,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:02:28,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:28,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:02:28,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:02:28,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:28,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:28,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:28,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:28,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:28,862 INFO L124 PetriNetUnfolderBase]: 215/457 cut-off events. [2024-06-28 01:02:28,863 INFO L125 PetriNetUnfolderBase]: For 1052/1052 co-relation queries the response was YES. [2024-06-28 01:02:28,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1428 conditions, 457 events. 215/457 cut-off events. For 1052/1052 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2341 event pairs, 41 based on Foata normal form. 1/451 useless extension candidates. Maximal degree in co-relation 1405. Up to 244 conditions per place. [2024-06-28 01:02:28,866 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 42 selfloop transitions, 21 changer transitions 0/75 dead transitions. [2024-06-28 01:02:28,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 75 transitions, 485 flow [2024-06-28 01:02:28,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:02:28,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:02:28,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 01:02:28,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-06-28 01:02:28,868 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 237 flow. Second operand 6 states and 144 transitions. [2024-06-28 01:02:28,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 75 transitions, 485 flow [2024-06-28 01:02:28,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 75 transitions, 464 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:02:28,872 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 311 flow [2024-06-28 01:02:28,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-28 01:02:28,874 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2024-06-28 01:02:28,874 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 311 flow [2024-06-28 01:02:28,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:28,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:28,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:28,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:02:28,875 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:28,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:28,875 INFO L85 PathProgramCache]: Analyzing trace with hash -2019197367, now seen corresponding path program 3 times [2024-06-28 01:02:28,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:28,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718368116] [2024-06-28 01:02:28,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:28,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:28,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:28,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718368116] [2024-06-28 01:02:28,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718368116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:28,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:28,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:02:28,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043744940] [2024-06-28 01:02:28,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:28,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:02:28,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:28,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:02:28,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:02:28,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:28,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:28,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:28,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:28,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:29,069 INFO L124 PetriNetUnfolderBase]: 211/445 cut-off events. [2024-06-28 01:02:29,069 INFO L125 PetriNetUnfolderBase]: For 1331/1331 co-relation queries the response was YES. [2024-06-28 01:02:29,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 445 events. 211/445 cut-off events. For 1331/1331 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2297 event pairs, 47 based on Foata normal form. 2/437 useless extension candidates. Maximal degree in co-relation 1459. Up to 241 conditions per place. [2024-06-28 01:02:29,074 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 41 selfloop transitions, 18 changer transitions 0/71 dead transitions. [2024-06-28 01:02:29,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 483 flow [2024-06-28 01:02:29,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:02:29,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:02:29,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 01:02:29,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6619047619047619 [2024-06-28 01:02:29,075 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 311 flow. Second operand 6 states and 139 transitions. [2024-06-28 01:02:29,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 483 flow [2024-06-28 01:02:29,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 71 transitions, 459 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-28 01:02:29,082 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 329 flow [2024-06-28 01:02:29,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=329, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-06-28 01:02:29,083 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 29 predicate places. [2024-06-28 01:02:29,083 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 329 flow [2024-06-28 01:02:29,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:29,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:29,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:29,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:02:29,083 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:29,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:29,084 INFO L85 PathProgramCache]: Analyzing trace with hash -926129500, now seen corresponding path program 1 times [2024-06-28 01:02:29,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:29,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490899829] [2024-06-28 01:02:29,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:29,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:29,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:29,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490899829] [2024-06-28 01:02:29,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490899829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:29,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:29,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:02:29,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580525114] [2024-06-28 01:02:29,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:29,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:02:29,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:29,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:02:29,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:02:29,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:29,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 329 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:29,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:29,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:29,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:29,304 INFO L124 PetriNetUnfolderBase]: 218/450 cut-off events. [2024-06-28 01:02:29,305 INFO L125 PetriNetUnfolderBase]: For 1543/1543 co-relation queries the response was YES. [2024-06-28 01:02:29,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1590 conditions, 450 events. 218/450 cut-off events. For 1543/1543 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2343 event pairs, 40 based on Foata normal form. 1/445 useless extension candidates. Maximal degree in co-relation 1563. Up to 286 conditions per place. [2024-06-28 01:02:29,308 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 39 selfloop transitions, 18 changer transitions 0/69 dead transitions. [2024-06-28 01:02:29,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 487 flow [2024-06-28 01:02:29,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:02:29,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:02:29,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-28 01:02:29,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6742857142857143 [2024-06-28 01:02:29,309 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 329 flow. Second operand 5 states and 118 transitions. [2024-06-28 01:02:29,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 487 flow [2024-06-28 01:02:29,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 69 transitions, 439 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 01:02:29,314 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 350 flow [2024-06-28 01:02:29,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-06-28 01:02:29,315 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 29 predicate places. [2024-06-28 01:02:29,315 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 350 flow [2024-06-28 01:02:29,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:29,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:29,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:29,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:02:29,316 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:29,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:29,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1551902180, now seen corresponding path program 2 times [2024-06-28 01:02:29,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:29,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118149271] [2024-06-28 01:02:29,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:29,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:29,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:29,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:29,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118149271] [2024-06-28 01:02:29,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118149271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:29,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:29,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:02:29,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437293457] [2024-06-28 01:02:29,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:29,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:02:29,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:29,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:02:29,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:02:29,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:29,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 350 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:29,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:29,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:29,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:29,505 INFO L124 PetriNetUnfolderBase]: 225/475 cut-off events. [2024-06-28 01:02:29,506 INFO L125 PetriNetUnfolderBase]: For 1807/1807 co-relation queries the response was YES. [2024-06-28 01:02:29,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 475 events. 225/475 cut-off events. For 1807/1807 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2532 event pairs, 50 based on Foata normal form. 1/466 useless extension candidates. Maximal degree in co-relation 1629. Up to 257 conditions per place. [2024-06-28 01:02:29,509 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 41 selfloop transitions, 22 changer transitions 0/75 dead transitions. [2024-06-28 01:02:29,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 554 flow [2024-06-28 01:02:29,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:02:29,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:02:29,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 01:02:29,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-06-28 01:02:29,511 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 350 flow. Second operand 6 states and 138 transitions. [2024-06-28 01:02:29,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 554 flow [2024-06-28 01:02:29,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 513 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:02:29,516 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 381 flow [2024-06-28 01:02:29,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=381, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2024-06-28 01:02:29,517 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 31 predicate places. [2024-06-28 01:02:29,517 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 381 flow [2024-06-28 01:02:29,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:29,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:29,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:29,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:02:29,518 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:29,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:29,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1552109570, now seen corresponding path program 3 times [2024-06-28 01:02:29,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:29,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101969678] [2024-06-28 01:02:29,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:29,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:29,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:29,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:29,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101969678] [2024-06-28 01:02:29,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101969678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:29,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:29,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:02:29,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871712441] [2024-06-28 01:02:29,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:29,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:02:29,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:29,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:02:29,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:02:29,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:29,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:29,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:29,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:29,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:29,716 INFO L124 PetriNetUnfolderBase]: 223/476 cut-off events. [2024-06-28 01:02:29,716 INFO L125 PetriNetUnfolderBase]: For 1873/1873 co-relation queries the response was YES. [2024-06-28 01:02:29,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1655 conditions, 476 events. 223/476 cut-off events. For 1873/1873 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2534 event pairs, 48 based on Foata normal form. 1/469 useless extension candidates. Maximal degree in co-relation 1628. Up to 255 conditions per place. [2024-06-28 01:02:29,720 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 37 selfloop transitions, 25 changer transitions 0/74 dead transitions. [2024-06-28 01:02:29,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 537 flow [2024-06-28 01:02:29,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:02:29,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:02:29,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 01:02:29,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-06-28 01:02:29,722 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 381 flow. Second operand 6 states and 138 transitions. [2024-06-28 01:02:29,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 537 flow [2024-06-28 01:02:29,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 487 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:02:29,728 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 386 flow [2024-06-28 01:02:29,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=386, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2024-06-28 01:02:29,729 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 34 predicate places. [2024-06-28 01:02:29,729 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 386 flow [2024-06-28 01:02:29,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:29,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:29,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:29,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:02:29,729 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:29,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:29,730 INFO L85 PathProgramCache]: Analyzing trace with hash 390337888, now seen corresponding path program 1 times [2024-06-28 01:02:29,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:29,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210377231] [2024-06-28 01:02:29,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:29,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:29,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:29,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210377231] [2024-06-28 01:02:29,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210377231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:29,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:29,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:02:29,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108856856] [2024-06-28 01:02:29,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:29,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:02:29,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:29,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:02:29,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:02:29,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:29,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:29,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:29,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:29,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:29,925 INFO L124 PetriNetUnfolderBase]: 233/481 cut-off events. [2024-06-28 01:02:29,925 INFO L125 PetriNetUnfolderBase]: For 1982/1982 co-relation queries the response was YES. [2024-06-28 01:02:29,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1707 conditions, 481 events. 233/481 cut-off events. For 1982/1982 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2551 event pairs, 38 based on Foata normal form. 2/479 useless extension candidates. Maximal degree in co-relation 1679. Up to 325 conditions per place. [2024-06-28 01:02:29,930 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 51 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2024-06-28 01:02:29,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 554 flow [2024-06-28 01:02:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:02:29,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:02:29,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 01:02:29,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-28 01:02:29,931 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 386 flow. Second operand 6 states and 135 transitions. [2024-06-28 01:02:29,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 554 flow [2024-06-28 01:02:29,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 76 transitions, 465 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:02:29,936 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 335 flow [2024-06-28 01:02:29,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=335, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-06-28 01:02:29,937 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2024-06-28 01:02:29,937 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 335 flow [2024-06-28 01:02:29,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:29,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:29,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:29,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:02:29,938 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:29,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:29,938 INFO L85 PathProgramCache]: Analyzing trace with hash 399861088, now seen corresponding path program 2 times [2024-06-28 01:02:29,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:29,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748642949] [2024-06-28 01:02:29,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:29,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:30,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:30,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:30,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748642949] [2024-06-28 01:02:30,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748642949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:30,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:30,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:02:30,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160754944] [2024-06-28 01:02:30,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:30,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:02:30,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:30,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:02:30,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:02:30,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:30,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 335 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:30,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:30,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:30,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:30,137 INFO L124 PetriNetUnfolderBase]: 230/480 cut-off events. [2024-06-28 01:02:30,137 INFO L125 PetriNetUnfolderBase]: For 1646/1646 co-relation queries the response was YES. [2024-06-28 01:02:30,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1601 conditions, 480 events. 230/480 cut-off events. For 1646/1646 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2548 event pairs, 33 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 1573. Up to 274 conditions per place. [2024-06-28 01:02:30,141 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 52 selfloop transitions, 13 changer transitions 0/77 dead transitions. [2024-06-28 01:02:30,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 77 transitions, 501 flow [2024-06-28 01:02:30,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:02:30,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:02:30,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 01:02:30,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-06-28 01:02:30,143 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 335 flow. Second operand 6 states and 133 transitions. [2024-06-28 01:02:30,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 77 transitions, 501 flow [2024-06-28 01:02:30,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 473 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:02:30,148 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 337 flow [2024-06-28 01:02:30,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=337, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2024-06-28 01:02:30,149 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 35 predicate places. [2024-06-28 01:02:30,149 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 337 flow [2024-06-28 01:02:30,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:30,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:30,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:30,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:02:30,149 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:30,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:30,150 INFO L85 PathProgramCache]: Analyzing trace with hash 646671818, now seen corresponding path program 1 times [2024-06-28 01:02:30,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:30,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775578095] [2024-06-28 01:02:30,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:30,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:30,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:30,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775578095] [2024-06-28 01:02:30,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775578095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:30,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:30,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:02:30,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319965237] [2024-06-28 01:02:30,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:30,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:02:30,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:30,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:02:30,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:02:30,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 35 [2024-06-28 01:02:30,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 337 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:30,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:30,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 35 [2024-06-28 01:02:30,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:30,276 INFO L124 PetriNetUnfolderBase]: 120/343 cut-off events. [2024-06-28 01:02:30,277 INFO L125 PetriNetUnfolderBase]: For 628/634 co-relation queries the response was YES. [2024-06-28 01:02:30,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 343 events. 120/343 cut-off events. For 628/634 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1759 event pairs, 9 based on Foata normal form. 18/325 useless extension candidates. Maximal degree in co-relation 901. Up to 121 conditions per place. [2024-06-28 01:02:30,279 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 20 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2024-06-28 01:02:30,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 69 transitions, 437 flow [2024-06-28 01:02:30,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:02:30,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:02:30,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-06-28 01:02:30,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7571428571428571 [2024-06-28 01:02:30,280 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 337 flow. Second operand 4 states and 106 transitions. [2024-06-28 01:02:30,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 69 transitions, 437 flow [2024-06-28 01:02:30,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 69 transitions, 407 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:02:30,284 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 373 flow [2024-06-28 01:02:30,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=373, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-06-28 01:02:30,285 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 36 predicate places. [2024-06-28 01:02:30,285 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 373 flow [2024-06-28 01:02:30,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:30,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:30,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:30,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:02:30,285 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:30,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:30,286 INFO L85 PathProgramCache]: Analyzing trace with hash 580596200, now seen corresponding path program 1 times [2024-06-28 01:02:30,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:30,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104785009] [2024-06-28 01:02:30,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:30,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:30,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:30,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104785009] [2024-06-28 01:02:30,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104785009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:30,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:30,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:02:30,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364550566] [2024-06-28 01:02:30,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:30,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:02:30,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:30,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:02:30,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:02:30,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:30,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 373 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:30,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:30,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:30,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:30,515 INFO L124 PetriNetUnfolderBase]: 200/448 cut-off events. [2024-06-28 01:02:30,516 INFO L125 PetriNetUnfolderBase]: For 1970/1970 co-relation queries the response was YES. [2024-06-28 01:02:30,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1558 conditions, 448 events. 200/448 cut-off events. For 1970/1970 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2276 event pairs, 68 based on Foata normal form. 2/417 useless extension candidates. Maximal degree in co-relation 1527. Up to 328 conditions per place. [2024-06-28 01:02:30,519 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 56 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2024-06-28 01:02:30,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 79 transitions, 557 flow [2024-06-28 01:02:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:02:30,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:02:30,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-28 01:02:30,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6081632653061224 [2024-06-28 01:02:30,521 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 373 flow. Second operand 7 states and 149 transitions. [2024-06-28 01:02:30,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 79 transitions, 557 flow [2024-06-28 01:02:30,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 79 transitions, 539 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:02:30,531 INFO L231 Difference]: Finished difference. Result has 78 places, 62 transitions, 389 flow [2024-06-28 01:02:30,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=389, PETRI_PLACES=78, PETRI_TRANSITIONS=62} [2024-06-28 01:02:30,531 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 41 predicate places. [2024-06-28 01:02:30,532 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 62 transitions, 389 flow [2024-06-28 01:02:30,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:30,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:30,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:30,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:02:30,532 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:30,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:30,533 INFO L85 PathProgramCache]: Analyzing trace with hash 179114096, now seen corresponding path program 2 times [2024-06-28 01:02:30,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:30,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661699036] [2024-06-28 01:02:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:30,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:30,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:30,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661699036] [2024-06-28 01:02:30,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661699036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:30,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:30,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:02:30,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278218725] [2024-06-28 01:02:30,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:30,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:02:30,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:30,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:02:30,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:02:30,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:30,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 62 transitions, 389 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:30,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:30,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:30,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:30,818 INFO L124 PetriNetUnfolderBase]: 211/494 cut-off events. [2024-06-28 01:02:30,818 INFO L125 PetriNetUnfolderBase]: For 2161/2161 co-relation queries the response was YES. [2024-06-28 01:02:30,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1722 conditions, 494 events. 211/494 cut-off events. For 2161/2161 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2527 event pairs, 37 based on Foata normal form. 2/463 useless extension candidates. Maximal degree in co-relation 1690. Up to 302 conditions per place. [2024-06-28 01:02:30,822 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 59 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2024-06-28 01:02:30,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 84 transitions, 597 flow [2024-06-28 01:02:30,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:02:30,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:02:30,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 01:02:30,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6035714285714285 [2024-06-28 01:02:30,824 INFO L175 Difference]: Start difference. First operand has 78 places, 62 transitions, 389 flow. Second operand 8 states and 169 transitions. [2024-06-28 01:02:30,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 84 transitions, 597 flow [2024-06-28 01:02:30,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 84 transitions, 573 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 01:02:30,831 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 405 flow [2024-06-28 01:02:30,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=405, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2024-06-28 01:02:30,832 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 44 predicate places. [2024-06-28 01:02:30,832 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 405 flow [2024-06-28 01:02:30,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:30,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:30,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:30,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:02:30,833 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:30,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:30,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1877183866, now seen corresponding path program 3 times [2024-06-28 01:02:30,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:30,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634820593] [2024-06-28 01:02:30,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:30,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:30,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:30,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:30,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634820593] [2024-06-28 01:02:30,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634820593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:30,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:30,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:02:30,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352662449] [2024-06-28 01:02:30,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:30,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:02:30,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:30,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:02:30,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:02:30,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:30,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 405 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:30,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:30,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:30,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:31,066 INFO L124 PetriNetUnfolderBase]: 222/505 cut-off events. [2024-06-28 01:02:31,066 INFO L125 PetriNetUnfolderBase]: For 2538/2542 co-relation queries the response was YES. [2024-06-28 01:02:31,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1839 conditions, 505 events. 222/505 cut-off events. For 2538/2542 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2687 event pairs, 76 based on Foata normal form. 3/474 useless extension candidates. Maximal degree in co-relation 1806. Up to 330 conditions per place. [2024-06-28 01:02:31,070 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 39 selfloop transitions, 26 changer transitions 0/78 dead transitions. [2024-06-28 01:02:31,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 78 transitions, 583 flow [2024-06-28 01:02:31,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:02:31,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:02:31,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 01:02:31,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-06-28 01:02:31,072 INFO L175 Difference]: Start difference. First operand has 81 places, 63 transitions, 405 flow. Second operand 7 states and 154 transitions. [2024-06-28 01:02:31,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 78 transitions, 583 flow [2024-06-28 01:02:31,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 78 transitions, 553 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:02:31,084 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 445 flow [2024-06-28 01:02:31,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=445, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2024-06-28 01:02:31,085 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 45 predicate places. [2024-06-28 01:02:31,085 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 445 flow [2024-06-28 01:02:31,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:31,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:31,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:31,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:02:31,086 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:31,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:31,086 INFO L85 PathProgramCache]: Analyzing trace with hash 821260906, now seen corresponding path program 4 times [2024-06-28 01:02:31,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:31,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190525833] [2024-06-28 01:02:31,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:31,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:31,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:31,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190525833] [2024-06-28 01:02:31,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190525833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:31,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:31,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:02:31,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166905461] [2024-06-28 01:02:31,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:31,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:02:31,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:31,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:02:31,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:02:31,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:31,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 64 transitions, 445 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:31,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:31,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:31,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:31,330 INFO L124 PetriNetUnfolderBase]: 253/577 cut-off events. [2024-06-28 01:02:31,330 INFO L125 PetriNetUnfolderBase]: For 4033/4035 co-relation queries the response was YES. [2024-06-28 01:02:31,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2017 conditions, 577 events. 253/577 cut-off events. For 4033/4035 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3287 event pairs, 99 based on Foata normal form. 12/545 useless extension candidates. Maximal degree in co-relation 1983. Up to 319 conditions per place. [2024-06-28 01:02:31,335 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 42 selfloop transitions, 23 changer transitions 0/78 dead transitions. [2024-06-28 01:02:31,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 78 transitions, 617 flow [2024-06-28 01:02:31,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:02:31,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:02:31,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-28 01:02:31,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6244897959183674 [2024-06-28 01:02:31,338 INFO L175 Difference]: Start difference. First operand has 82 places, 64 transitions, 445 flow. Second operand 7 states and 153 transitions. [2024-06-28 01:02:31,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 78 transitions, 617 flow [2024-06-28 01:02:31,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 78 transitions, 557 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:02:31,346 INFO L231 Difference]: Finished difference. Result has 84 places, 64 transitions, 436 flow [2024-06-28 01:02:31,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=436, PETRI_PLACES=84, PETRI_TRANSITIONS=64} [2024-06-28 01:02:31,347 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 47 predicate places. [2024-06-28 01:02:31,347 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 64 transitions, 436 flow [2024-06-28 01:02:31,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:31,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:31,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:31,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:02:31,348 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:31,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:31,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1040917979, now seen corresponding path program 1 times [2024-06-28 01:02:31,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:31,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663216160] [2024-06-28 01:02:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:31,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:31,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:31,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:31,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663216160] [2024-06-28 01:02:31,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663216160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:31,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:31,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:02:31,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459463050] [2024-06-28 01:02:31,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:31,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:02:31,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:31,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:02:31,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:02:31,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:31,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 64 transitions, 436 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:31,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:31,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:31,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:31,623 INFO L124 PetriNetUnfolderBase]: 320/742 cut-off events. [2024-06-28 01:02:31,624 INFO L125 PetriNetUnfolderBase]: For 5124/5126 co-relation queries the response was YES. [2024-06-28 01:02:31,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2532 conditions, 742 events. 320/742 cut-off events. For 5124/5126 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4667 event pairs, 120 based on Foata normal form. 8/700 useless extension candidates. Maximal degree in co-relation 2497. Up to 280 conditions per place. [2024-06-28 01:02:31,630 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 56 selfloop transitions, 18 changer transitions 0/87 dead transitions. [2024-06-28 01:02:31,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 87 transitions, 692 flow [2024-06-28 01:02:31,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:02:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:02:31,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 01:02:31,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6408163265306123 [2024-06-28 01:02:31,631 INFO L175 Difference]: Start difference. First operand has 84 places, 64 transitions, 436 flow. Second operand 7 states and 157 transitions. [2024-06-28 01:02:31,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 87 transitions, 692 flow [2024-06-28 01:02:31,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 87 transitions, 641 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:02:31,641 INFO L231 Difference]: Finished difference. Result has 86 places, 64 transitions, 424 flow [2024-06-28 01:02:31,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=86, PETRI_TRANSITIONS=64} [2024-06-28 01:02:31,642 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 49 predicate places. [2024-06-28 01:02:31,642 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 64 transitions, 424 flow [2024-06-28 01:02:31,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:31,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:31,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:31,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:02:31,643 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:31,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:31,643 INFO L85 PathProgramCache]: Analyzing trace with hash 763018257, now seen corresponding path program 2 times [2024-06-28 01:02:31,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:31,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465184647] [2024-06-28 01:02:31,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:31,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:31,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:31,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:31,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465184647] [2024-06-28 01:02:31,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465184647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:31,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:31,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:02:31,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135584458] [2024-06-28 01:02:31,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:31,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:02:31,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:31,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:02:31,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:02:31,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:31,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 64 transitions, 424 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:31,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:31,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:31,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:31,910 INFO L124 PetriNetUnfolderBase]: 343/805 cut-off events. [2024-06-28 01:02:31,910 INFO L125 PetriNetUnfolderBase]: For 5327/5329 co-relation queries the response was YES. [2024-06-28 01:02:31,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2668 conditions, 805 events. 343/805 cut-off events. For 5327/5329 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5264 event pairs, 126 based on Foata normal form. 8/763 useless extension candidates. Maximal degree in co-relation 2632. Up to 390 conditions per place. [2024-06-28 01:02:31,916 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 53 selfloop transitions, 17 changer transitions 0/83 dead transitions. [2024-06-28 01:02:31,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 662 flow [2024-06-28 01:02:31,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:02:31,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:02:31,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 01:02:31,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2024-06-28 01:02:31,919 INFO L175 Difference]: Start difference. First operand has 86 places, 64 transitions, 424 flow. Second operand 6 states and 137 transitions. [2024-06-28 01:02:31,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 662 flow [2024-06-28 01:02:31,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 627 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 01:02:31,959 INFO L231 Difference]: Finished difference. Result has 87 places, 64 transitions, 426 flow [2024-06-28 01:02:31,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=426, PETRI_PLACES=87, PETRI_TRANSITIONS=64} [2024-06-28 01:02:31,959 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 50 predicate places. [2024-06-28 01:02:31,959 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 64 transitions, 426 flow [2024-06-28 01:02:31,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:31,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:31,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:31,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:02:31,960 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:31,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:31,960 INFO L85 PathProgramCache]: Analyzing trace with hash 763166127, now seen corresponding path program 3 times [2024-06-28 01:02:31,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:31,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113782099] [2024-06-28 01:02:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:31,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:32,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:32,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:32,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113782099] [2024-06-28 01:02:32,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113782099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:32,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:32,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:02:32,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521780209] [2024-06-28 01:02:32,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:32,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:02:32,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:32,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:02:32,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:02:32,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:32,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 64 transitions, 426 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:32,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:32,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:32,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:32,228 INFO L124 PetriNetUnfolderBase]: 333/792 cut-off events. [2024-06-28 01:02:32,228 INFO L125 PetriNetUnfolderBase]: For 4447/4449 co-relation queries the response was YES. [2024-06-28 01:02:32,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2478 conditions, 792 events. 333/792 cut-off events. For 4447/4449 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5184 event pairs, 136 based on Foata normal form. 10/752 useless extension candidates. Maximal degree in co-relation 2441. Up to 502 conditions per place. [2024-06-28 01:02:32,234 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 44 selfloop transitions, 20 changer transitions 0/77 dead transitions. [2024-06-28 01:02:32,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 77 transitions, 594 flow [2024-06-28 01:02:32,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:02:32,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:02:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 01:02:32,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-28 01:02:32,236 INFO L175 Difference]: Start difference. First operand has 87 places, 64 transitions, 426 flow. Second operand 6 states and 135 transitions. [2024-06-28 01:02:32,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 77 transitions, 594 flow [2024-06-28 01:02:32,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 77 transitions, 561 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:02:32,247 INFO L231 Difference]: Finished difference. Result has 89 places, 64 transitions, 440 flow [2024-06-28 01:02:32,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=440, PETRI_PLACES=89, PETRI_TRANSITIONS=64} [2024-06-28 01:02:32,248 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 52 predicate places. [2024-06-28 01:02:32,248 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 64 transitions, 440 flow [2024-06-28 01:02:32,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:32,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:32,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:32,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:02:32,249 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:32,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:32,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1223659937, now seen corresponding path program 4 times [2024-06-28 01:02:32,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:32,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625822243] [2024-06-28 01:02:32,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:32,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:32,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:32,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:32,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625822243] [2024-06-28 01:02:32,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625822243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:32,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:32,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:02:32,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109503200] [2024-06-28 01:02:32,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:32,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:02:32,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:32,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:02:32,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:02:32,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:32,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 64 transitions, 440 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:32,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:32,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:32,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:32,496 INFO L124 PetriNetUnfolderBase]: 367/866 cut-off events. [2024-06-28 01:02:32,496 INFO L125 PetriNetUnfolderBase]: For 4926/4928 co-relation queries the response was YES. [2024-06-28 01:02:32,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2714 conditions, 866 events. 367/866 cut-off events. For 4926/4928 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5832 event pairs, 190 based on Foata normal form. 10/816 useless extension candidates. Maximal degree in co-relation 2676. Up to 587 conditions per place. [2024-06-28 01:02:32,503 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 40 selfloop transitions, 25 changer transitions 0/78 dead transitions. [2024-06-28 01:02:32,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 78 transitions, 612 flow [2024-06-28 01:02:32,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:02:32,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:02:32,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-28 01:02:32,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6204081632653061 [2024-06-28 01:02:32,505 INFO L175 Difference]: Start difference. First operand has 89 places, 64 transitions, 440 flow. Second operand 7 states and 152 transitions. [2024-06-28 01:02:32,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 78 transitions, 612 flow [2024-06-28 01:02:32,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 78 transitions, 567 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 01:02:32,518 INFO L231 Difference]: Finished difference. Result has 90 places, 64 transitions, 449 flow [2024-06-28 01:02:32,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=449, PETRI_PLACES=90, PETRI_TRANSITIONS=64} [2024-06-28 01:02:32,518 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 53 predicate places. [2024-06-28 01:02:32,519 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 64 transitions, 449 flow [2024-06-28 01:02:32,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:32,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:32,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:32,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:02:32,520 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:32,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:32,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1024358147, now seen corresponding path program 5 times [2024-06-28 01:02:32,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:32,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825449789] [2024-06-28 01:02:32,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:32,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:32,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:32,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:32,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825449789] [2024-06-28 01:02:32,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825449789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:32,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:32,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:02:32,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814490696] [2024-06-28 01:02:32,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:32,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:02:32,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:32,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:02:32,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:02:32,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:32,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 64 transitions, 449 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:32,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:32,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:32,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:32,771 INFO L124 PetriNetUnfolderBase]: 401/960 cut-off events. [2024-06-28 01:02:32,772 INFO L125 PetriNetUnfolderBase]: For 5021/5023 co-relation queries the response was YES. [2024-06-28 01:02:32,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2920 conditions, 960 events. 401/960 cut-off events. For 5021/5023 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6715 event pairs, 226 based on Foata normal form. 10/905 useless extension candidates. Maximal degree in co-relation 2882. Up to 661 conditions per place. [2024-06-28 01:02:32,779 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 43 selfloop transitions, 22 changer transitions 0/78 dead transitions. [2024-06-28 01:02:32,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 78 transitions, 621 flow [2024-06-28 01:02:32,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:02:32,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:02:32,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-28 01:02:32,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6163265306122448 [2024-06-28 01:02:32,781 INFO L175 Difference]: Start difference. First operand has 90 places, 64 transitions, 449 flow. Second operand 7 states and 151 transitions. [2024-06-28 01:02:32,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 78 transitions, 621 flow [2024-06-28 01:02:32,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 78 transitions, 573 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 01:02:32,796 INFO L231 Difference]: Finished difference. Result has 92 places, 64 transitions, 449 flow [2024-06-28 01:02:32,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=449, PETRI_PLACES=92, PETRI_TRANSITIONS=64} [2024-06-28 01:02:32,796 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 55 predicate places. [2024-06-28 01:02:32,796 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 64 transitions, 449 flow [2024-06-28 01:02:32,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:32,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:32,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:32,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:02:32,797 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:32,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:32,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1024210277, now seen corresponding path program 6 times [2024-06-28 01:02:32,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:32,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904648017] [2024-06-28 01:02:32,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:32,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:32,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:32,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904648017] [2024-06-28 01:02:32,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904648017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:32,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:32,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:02:32,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962922482] [2024-06-28 01:02:32,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:32,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:02:32,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:32,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:02:32,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:02:32,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:32,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 64 transitions, 449 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:32,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:32,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:32,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:33,045 INFO L124 PetriNetUnfolderBase]: 410/999 cut-off events. [2024-06-28 01:02:33,046 INFO L125 PetriNetUnfolderBase]: For 4276/4278 co-relation queries the response was YES. [2024-06-28 01:02:33,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2957 conditions, 999 events. 410/999 cut-off events. For 4276/4278 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7113 event pairs, 224 based on Foata normal form. 8/943 useless extension candidates. Maximal degree in co-relation 2918. Up to 427 conditions per place. [2024-06-28 01:02:33,053 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 48 selfloop transitions, 22 changer transitions 0/83 dead transitions. [2024-06-28 01:02:33,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 83 transitions, 647 flow [2024-06-28 01:02:33,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:02:33,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:02:33,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-28 01:02:33,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2024-06-28 01:02:33,055 INFO L175 Difference]: Start difference. First operand has 92 places, 64 transitions, 449 flow. Second operand 7 states and 155 transitions. [2024-06-28 01:02:33,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 83 transitions, 647 flow [2024-06-28 01:02:33,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 83 transitions, 605 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 01:02:33,070 INFO L231 Difference]: Finished difference. Result has 94 places, 64 transitions, 455 flow [2024-06-28 01:02:33,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=455, PETRI_PLACES=94, PETRI_TRANSITIONS=64} [2024-06-28 01:02:33,070 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 57 predicate places. [2024-06-28 01:02:33,070 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 64 transitions, 455 flow [2024-06-28 01:02:33,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:33,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:33,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:33,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:02:33,071 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:33,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:33,072 INFO L85 PathProgramCache]: Analyzing trace with hash 434870221, now seen corresponding path program 1 times [2024-06-28 01:02:33,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:33,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654585465] [2024-06-28 01:02:33,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:33,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:33,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:33,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654585465] [2024-06-28 01:02:33,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654585465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:33,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:33,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:02:33,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971910683] [2024-06-28 01:02:33,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:33,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:02:33,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:33,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:02:33,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:02:33,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:33,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 64 transitions, 455 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:33,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:33,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:33,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:33,350 INFO L124 PetriNetUnfolderBase]: 433/1055 cut-off events. [2024-06-28 01:02:33,351 INFO L125 PetriNetUnfolderBase]: For 4654/4656 co-relation queries the response was YES. [2024-06-28 01:02:33,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 1055 events. 433/1055 cut-off events. For 4654/4656 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7707 event pairs, 234 based on Foata normal form. 8/1000 useless extension candidates. Maximal degree in co-relation 3097. Up to 490 conditions per place. [2024-06-28 01:02:33,358 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 44 selfloop transitions, 26 changer transitions 0/83 dead transitions. [2024-06-28 01:02:33,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 83 transitions, 657 flow [2024-06-28 01:02:33,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:02:33,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:02:33,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 01:02:33,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.636734693877551 [2024-06-28 01:02:33,360 INFO L175 Difference]: Start difference. First operand has 94 places, 64 transitions, 455 flow. Second operand 7 states and 156 transitions. [2024-06-28 01:02:33,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 83 transitions, 657 flow [2024-06-28 01:02:33,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 83 transitions, 615 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 01:02:33,374 INFO L231 Difference]: Finished difference. Result has 96 places, 64 transitions, 468 flow [2024-06-28 01:02:33,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=468, PETRI_PLACES=96, PETRI_TRANSITIONS=64} [2024-06-28 01:02:33,375 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 59 predicate places. [2024-06-28 01:02:33,375 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 64 transitions, 468 flow [2024-06-28 01:02:33,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:33,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:33,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:33,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:02:33,376 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:33,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:33,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1700729889, now seen corresponding path program 2 times [2024-06-28 01:02:33,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:33,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951171619] [2024-06-28 01:02:33,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:33,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:33,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:33,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951171619] [2024-06-28 01:02:33,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951171619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:33,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:33,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:02:33,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712928900] [2024-06-28 01:02:33,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:33,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:02:33,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:33,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:02:33,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:02:33,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:33,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 64 transitions, 468 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:33,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:33,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:33,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:33,642 INFO L124 PetriNetUnfolderBase]: 456/1118 cut-off events. [2024-06-28 01:02:33,643 INFO L125 PetriNetUnfolderBase]: For 5010/5012 co-relation queries the response was YES. [2024-06-28 01:02:33,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3328 conditions, 1118 events. 456/1118 cut-off events. For 5010/5012 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8365 event pairs, 270 based on Foata normal form. 8/1061 useless extension candidates. Maximal degree in co-relation 3287. Up to 703 conditions per place. [2024-06-28 01:02:33,655 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 47 selfloop transitions, 23 changer transitions 0/83 dead transitions. [2024-06-28 01:02:33,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 83 transitions, 670 flow [2024-06-28 01:02:33,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:02:33,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:02:33,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 01:02:33,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6408163265306123 [2024-06-28 01:02:33,656 INFO L175 Difference]: Start difference. First operand has 96 places, 64 transitions, 468 flow. Second operand 7 states and 157 transitions. [2024-06-28 01:02:33,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 83 transitions, 670 flow [2024-06-28 01:02:33,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 83 transitions, 619 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 01:02:33,675 INFO L231 Difference]: Finished difference. Result has 98 places, 64 transitions, 466 flow [2024-06-28 01:02:33,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=466, PETRI_PLACES=98, PETRI_TRANSITIONS=64} [2024-06-28 01:02:33,677 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 61 predicate places. [2024-06-28 01:02:33,677 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 64 transitions, 466 flow [2024-06-28 01:02:33,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:33,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:33,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:33,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:02:33,678 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:33,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:33,678 INFO L85 PathProgramCache]: Analyzing trace with hash 2014429119, now seen corresponding path program 3 times [2024-06-28 01:02:33,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:33,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047944105] [2024-06-28 01:02:33,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:33,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:33,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:33,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047944105] [2024-06-28 01:02:33,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047944105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:33,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:33,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:02:33,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690523155] [2024-06-28 01:02:33,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:33,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:02:33,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:33,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:02:33,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:02:33,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-28 01:02:33,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 64 transitions, 466 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:33,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:33,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-28 01:02:33,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:33,989 INFO L124 PetriNetUnfolderBase]: 449/1109 cut-off events. [2024-06-28 01:02:33,989 INFO L125 PetriNetUnfolderBase]: For 3401/3403 co-relation queries the response was YES. [2024-06-28 01:02:33,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3155 conditions, 1109 events. 449/1109 cut-off events. For 3401/3403 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8288 event pairs, 254 based on Foata normal form. 8/1052 useless extension candidates. Maximal degree in co-relation 3113. Up to 666 conditions per place. [2024-06-28 01:02:33,997 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 52 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2024-06-28 01:02:33,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 84 transitions, 618 flow [2024-06-28 01:02:33,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:02:33,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:02:33,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 01:02:33,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-06-28 01:02:33,999 INFO L175 Difference]: Start difference. First operand has 98 places, 64 transitions, 466 flow. Second operand 7 states and 154 transitions. [2024-06-28 01:02:33,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 84 transitions, 618 flow [2024-06-28 01:02:34,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 84 transitions, 489 flow, removed 5 selfloop flow, removed 31 redundant places. [2024-06-28 01:02:34,005 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 325 flow [2024-06-28 01:02:34,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=325, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2024-06-28 01:02:34,006 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 35 predicate places. [2024-06-28 01:02:34,006 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 325 flow [2024-06-28 01:02:34,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:34,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:34,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:34,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:02:34,007 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:34,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:34,007 INFO L85 PathProgramCache]: Analyzing trace with hash -33469165, now seen corresponding path program 1 times [2024-06-28 01:02:34,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:34,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68239775] [2024-06-28 01:02:34,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:34,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:34,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:34,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:34,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68239775] [2024-06-28 01:02:34,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68239775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:34,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:34,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:02:34,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281926519] [2024-06-28 01:02:34,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:34,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:02:34,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:34,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:02:34,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:02:34,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 35 [2024-06-28 01:02:34,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 325 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2024-06-28 01:02:34,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:34,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 35 [2024-06-28 01:02:34,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:34,194 INFO L124 PetriNetUnfolderBase]: 328/977 cut-off events. [2024-06-28 01:02:34,195 INFO L125 PetriNetUnfolderBase]: For 582/624 co-relation queries the response was YES. [2024-06-28 01:02:34,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2300 conditions, 977 events. 328/977 cut-off events. For 582/624 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7041 event pairs, 15 based on Foata normal form. 70/989 useless extension candidates. Maximal degree in co-relation 2284. Up to 312 conditions per place. [2024-06-28 01:02:34,199 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 20 selfloop transitions, 17 changer transitions 0/73 dead transitions. [2024-06-28 01:02:34,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 73 transitions, 423 flow [2024-06-28 01:02:34,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:02:34,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:02:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-28 01:02:34,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7314285714285714 [2024-06-28 01:02:34,200 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 325 flow. Second operand 5 states and 128 transitions. [2024-06-28 01:02:34,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 73 transitions, 423 flow [2024-06-28 01:02:34,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 73 transitions, 386 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 01:02:34,202 INFO L231 Difference]: Finished difference. Result has 73 places, 64 transitions, 350 flow [2024-06-28 01:02:34,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=73, PETRI_TRANSITIONS=64} [2024-06-28 01:02:34,203 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 36 predicate places. [2024-06-28 01:02:34,203 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 64 transitions, 350 flow [2024-06-28 01:02:34,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2024-06-28 01:02:34,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:34,203 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] [2024-06-28 01:02:34,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:02:34,204 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:34,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:34,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1040128414, now seen corresponding path program 1 times [2024-06-28 01:02:34,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:34,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381226228] [2024-06-28 01:02:34,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:34,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:34,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:34,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:34,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381226228] [2024-06-28 01:02:34,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381226228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:34,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:34,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:02:34,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738547148] [2024-06-28 01:02:34,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:34,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:02:34,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:34,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:02:34,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:02:34,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 35 [2024-06-28 01:02:34,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 64 transitions, 350 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:34,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:34,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 35 [2024-06-28 01:02:34,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:34,416 INFO L124 PetriNetUnfolderBase]: 266/836 cut-off events. [2024-06-28 01:02:34,416 INFO L125 PetriNetUnfolderBase]: For 664/664 co-relation queries the response was YES. [2024-06-28 01:02:34,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2179 conditions, 836 events. 266/836 cut-off events. For 664/664 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6188 event pairs, 110 based on Foata normal form. 28/765 useless extension candidates. Maximal degree in co-relation 2161. Up to 241 conditions per place. [2024-06-28 01:02:34,420 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 14 selfloop transitions, 3 changer transitions 35/74 dead transitions. [2024-06-28 01:02:34,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 74 transitions, 450 flow [2024-06-28 01:02:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:02:34,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:02:34,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 01:02:34,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6914285714285714 [2024-06-28 01:02:34,421 INFO L175 Difference]: Start difference. First operand has 73 places, 64 transitions, 350 flow. Second operand 5 states and 121 transitions. [2024-06-28 01:02:34,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 74 transitions, 450 flow [2024-06-28 01:02:34,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:02:34,424 INFO L231 Difference]: Finished difference. Result has 78 places, 37 transitions, 179 flow [2024-06-28 01:02:34,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=78, PETRI_TRANSITIONS=37} [2024-06-28 01:02:34,425 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 41 predicate places. [2024-06-28 01:02:34,425 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 37 transitions, 179 flow [2024-06-28 01:02:34,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:34,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:34,425 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] [2024-06-28 01:02:34,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:02:34,426 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:02:34,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:34,428 INFO L85 PathProgramCache]: Analyzing trace with hash -147614080, now seen corresponding path program 2 times [2024-06-28 01:02:34,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:34,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086392118] [2024-06-28 01:02:34,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:34,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:34,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:34,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:34,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086392118] [2024-06-28 01:02:34,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086392118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:34,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:34,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:02:34,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678350776] [2024-06-28 01:02:34,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:34,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:02:34,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:34,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:02:34,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:02:34,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 35 [2024-06-28 01:02:34,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 37 transitions, 179 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:34,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:34,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 35 [2024-06-28 01:02:34,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:34,659 INFO L124 PetriNetUnfolderBase]: 74/247 cut-off events. [2024-06-28 01:02:34,659 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2024-06-28 01:02:34,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 247 events. 74/247 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1219 event pairs, 12 based on Foata normal form. 12/231 useless extension candidates. Maximal degree in co-relation 684. Up to 99 conditions per place. [2024-06-28 01:02:34,660 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2024-06-28 01:02:34,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 42 transitions, 231 flow [2024-06-28 01:02:34,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:02:34,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:02:34,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 01:02:34,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-28 01:02:34,661 INFO L175 Difference]: Start difference. First operand has 78 places, 37 transitions, 179 flow. Second operand 6 states and 135 transitions. [2024-06-28 01:02:34,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 42 transitions, 231 flow [2024-06-28 01:02:34,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 42 transitions, 198 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 01:02:34,663 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2024-06-28 01:02:34,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2024-06-28 01:02:34,663 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 16 predicate places. [2024-06-28 01:02:34,663 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2024-06-28 01:02:34,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:34,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-06-28 01:02:34,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-06-28 01:02:34,669 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-06-28 01:02:34,669 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-06-28 01:02:34,669 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-06-28 01:02:34,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:02:34,669 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:34,672 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 01:02:34,672 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 01:02:34,676 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 01:02:34,676 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 01:02:34,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 01:02:34 BasicIcfg [2024-06-28 01:02:34,677 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 01:02:34,677 INFO L158 Benchmark]: Toolchain (without parser) took 9994.29ms. Allocated memory was 180.4MB in the beginning and 325.1MB in the end (delta: 144.7MB). Free memory was 107.3MB in the beginning and 254.5MB in the end (delta: -147.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:02:34,678 INFO L158 Benchmark]: Witness Parser took 0.09ms. Allocated memory is still 113.2MB. Free memory was 74.1MB in the beginning and 74.0MB in the end (delta: 108.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:02:34,678 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 180.4MB. Free memory is still 153.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:02:34,678 INFO L158 Benchmark]: CACSL2BoogieTranslator took 528.81ms. Allocated memory is still 180.4MB. Free memory was 107.0MB in the beginning and 80.8MB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-06-28 01:02:34,678 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.83ms. Allocated memory is still 180.4MB. Free memory was 80.8MB in the beginning and 78.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 01:02:34,678 INFO L158 Benchmark]: Boogie Preprocessor took 72.42ms. Allocated memory is still 180.4MB. Free memory was 78.8MB in the beginning and 151.3MB in the end (delta: -72.5MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2024-06-28 01:02:34,679 INFO L158 Benchmark]: RCFGBuilder took 432.85ms. Allocated memory is still 180.4MB. Free memory was 151.3MB in the beginning and 131.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-06-28 01:02:34,679 INFO L158 Benchmark]: TraceAbstraction took 8906.33ms. Allocated memory was 180.4MB in the beginning and 325.1MB in the end (delta: 144.7MB). Free memory was 130.7MB in the beginning and 254.5MB in the end (delta: -123.8MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2024-06-28 01:02:34,683 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.09ms. Allocated memory is still 113.2MB. Free memory was 74.1MB in the beginning and 74.0MB in the end (delta: 108.9kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.17ms. Allocated memory is still 180.4MB. Free memory is still 153.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 528.81ms. Allocated memory is still 180.4MB. Free memory was 107.0MB in the beginning and 80.8MB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.83ms. Allocated memory is still 180.4MB. Free memory was 80.8MB in the beginning and 78.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.42ms. Allocated memory is still 180.4MB. Free memory was 78.8MB in the beginning and 151.3MB in the end (delta: -72.5MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * RCFGBuilder took 432.85ms. Allocated memory is still 180.4MB. Free memory was 151.3MB in the beginning and 131.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 8906.33ms. Allocated memory was 180.4MB in the beginning and 325.1MB in the end (delta: 144.7MB). Free memory was 130.7MB in the beginning and 254.5MB in the end (delta: -123.8MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 763]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 764]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 52 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.8s, OverallIterations: 33, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1415 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1044 mSDsluCounter, 422 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 271 mSDsCounter, 129 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4051 IncrementalHoareTripleChecker+Invalid, 4180 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 129 mSolverCounterUnsat, 151 mSDtfsCounter, 4051 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=468occurred in iteration=28, InterpolantAutomatonStates: 195, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 502 NumberOfCodeBlocks, 502 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 469 ConstructedInterpolants, 0 QuantifiedInterpolants, 3058 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 33 InterpolantComputations, 33 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 01:02:34,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE