./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe022_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/safe022_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/safe022_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe022_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 00:58:53,037 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:58:53,089 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:58:53,094 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:58:53,094 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:58:53,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:58:53,124 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:58:53,125 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:58:53,125 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:58:53,128 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:58:53,128 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:58:53,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:58:53,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:58:53,130 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:58:53,130 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:58:53,131 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:58:53,131 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:58:53,131 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:58:53,131 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:58:53,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:58:53,132 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:58:53,132 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:58:53,132 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:58:53,132 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:58:53,132 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:58:53,133 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:58:53,133 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:58:53,133 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:58:53,134 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:58:53,134 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:58:53,134 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:58:53,135 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:58:53,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:58:53,135 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:58:53,135 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:58:53,135 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:58:53,136 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:58:53,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:58:53,136 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:58:53,136 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:58:53,136 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:58:53,136 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:58:53,137 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:58:53,137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 00:58:53,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:58:53,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:58:53,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:58:53,358 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:58:53,361 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:58:53,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe022_tso.yml/witness.yml [2024-06-28 00:58:53,453 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:58:53,454 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:58:53,455 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2024-06-28 00:58:54,453 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:58:54,689 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:58:54,690 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2024-06-28 00:58:54,702 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/964984fef/4848ec5dbd1d4bf588038920153946eb/FLAGa906acc0f [2024-06-28 00:58:54,712 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/964984fef/4848ec5dbd1d4bf588038920153946eb [2024-06-28 00:58:54,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:58:54,714 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:58:54,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:58:54,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:58:54,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:58:54,720 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:58:53" (1/2) ... [2024-06-28 00:58:54,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba359ab and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:58:54, skipping insertion in model container [2024-06-28 00:58:54,721 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:58:53" (1/2) ... [2024-06-28 00:58:54,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7714bf78 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:58:54, skipping insertion in model container [2024-06-28 00:58:54,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:58:54" (2/2) ... [2024-06-28 00:58:54,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba359ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:58:54, skipping insertion in model container [2024-06-28 00:58:54,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:58:54" (2/2) ... [2024-06-28 00:58:54,723 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:58:54,749 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:58:54,750 INFO L97 edCorrectnessWitness]: Location invariant before [L764-L764] (((((! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((((0 <= __unbuffered_cnt && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 00:58:54,750 INFO L97 edCorrectnessWitness]: Location invariant before [L763-L763] (((((! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((((0 <= __unbuffered_cnt && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 00:58:54,750 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:58:54,750 INFO L106 edCorrectnessWitness]: ghost_update [L761-L761] multithreaded = 1; [2024-06-28 00:58:54,777 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:58:54,933 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/safe022_tso.i[945,958] [2024-06-28 00:58:55,072 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:58:55,081 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 00:58:55,105 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/safe022_tso.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:58:55,149 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:58:55,177 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:58:55,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:58:55 WrapperNode [2024-06-28 00:58:55,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:58:55,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:58:55,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:58:55,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:58:55,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:58:55" (1/1) ... [2024-06-28 00:58:55,216 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:58:55" (1/1) ... [2024-06-28 00:58:55,242 INFO L138 Inliner]: procedures = 174, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2024-06-28 00:58:55,242 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:58:55,243 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:58:55,243 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:58:55,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:58:55,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:58:55" (1/1) ... [2024-06-28 00:58:55,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:58:55" (1/1) ... [2024-06-28 00:58:55,262 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:58:55" (1/1) ... [2024-06-28 00:58:55,281 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 00:58:55,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:58:55" (1/1) ... [2024-06-28 00:58:55,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:58:55" (1/1) ... [2024-06-28 00:58:55,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:58:55" (1/1) ... [2024-06-28 00:58:55,294 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:58:55" (1/1) ... [2024-06-28 00:58:55,298 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:58:55" (1/1) ... [2024-06-28 00:58:55,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:58:55" (1/1) ... [2024-06-28 00:58:55,302 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:58:55,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:58:55,305 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:58:55,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:58:55,305 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:58:55" (1/1) ... [2024-06-28 00:58:55,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:58:55,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:58:55,330 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 00:58:55,347 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 00:58:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:58:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:58:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:58:55,369 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:58:55,369 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:58:55,369 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:58:55,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:58:55,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:58:55,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:58:55,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:58:55,371 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 00:58:55,487 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:58:55,489 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:58:55,649 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:58:55,650 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:58:55,700 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:58:55,700 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:58:55,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:58:55 BoogieIcfgContainer [2024-06-28 00:58:55,701 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:58:55,702 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:58:55,704 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:58:55,711 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:58:55,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:58:53" (1/4) ... [2024-06-28 00:58:55,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6c5b94 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:58:55, skipping insertion in model container [2024-06-28 00:58:55,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:58:54" (2/4) ... [2024-06-28 00:58:55,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6c5b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:58:55, skipping insertion in model container [2024-06-28 00:58:55,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:58:55" (3/4) ... [2024-06-28 00:58:55,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6c5b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:58:55, skipping insertion in model container [2024-06-28 00:58:55,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:58:55" (4/4) ... [2024-06-28 00:58:55,714 INFO L112 eAbstractionObserver]: Analyzing ICFG safe022_tso.i [2024-06-28 00:58:55,727 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:58:55,728 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 00:58:55,728 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:58:55,752 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:58:55,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 34 transitions, 76 flow [2024-06-28 00:58:55,792 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2024-06-28 00:58:55,793 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:58:55,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 32 events. 1/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-06-28 00:58:55,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 34 transitions, 76 flow [2024-06-28 00:58:55,797 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 29 transitions, 64 flow [2024-06-28 00:58:55,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:58:55,809 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;@7c491a03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:58:55,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-28 00:58:55,814 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:58:55,814 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 00:58:55,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:58:55,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:55,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:58:55,815 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 00:58:55,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:55,819 INFO L85 PathProgramCache]: Analyzing trace with hash 178529934, now seen corresponding path program 1 times [2024-06-28 00:58:55,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:55,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695234991] [2024-06-28 00:58:55,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:55,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:56,175 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 00:58:56,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:56,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695234991] [2024-06-28 00:58:56,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695234991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:56,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:56,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:58:56,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594734044] [2024-06-28 00:58:56,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:56,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:58:56,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:56,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:58:56,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:58:56,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 34 [2024-06-28 00:58:56,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 64 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 00:58:56,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:56,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 34 [2024-06-28 00:58:56,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:56,334 INFO L124 PetriNetUnfolderBase]: 109/228 cut-off events. [2024-06-28 00:58:56,336 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-28 00:58:56,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 228 events. 109/228 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 964 event pairs, 57 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 436. Up to 196 conditions per place. [2024-06-28 00:58:56,341 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 21 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2024-06-28 00:58:56,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 131 flow [2024-06-28 00:58:56,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:58:56,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:58:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-06-28 00:58:56,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7254901960784313 [2024-06-28 00:58:56,352 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 64 flow. Second operand 3 states and 74 transitions. [2024-06-28 00:58:56,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 131 flow [2024-06-28 00:58:56,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:58:56,356 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 83 flow [2024-06-28 00:58:56,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2024-06-28 00:58:56,360 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2024-06-28 00:58:56,360 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 83 flow [2024-06-28 00:58:56,360 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 00:58:56,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:56,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:56,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:58:56,361 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 00:58:56,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:56,362 INFO L85 PathProgramCache]: Analyzing trace with hash -231274075, now seen corresponding path program 1 times [2024-06-28 00:58:56,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:56,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404877282] [2024-06-28 00:58:56,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:56,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:56,514 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 00:58:56,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:56,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404877282] [2024-06-28 00:58:56,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404877282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:56,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:56,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:58:56,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285589013] [2024-06-28 00:58:56,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:56,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:58:56,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:56,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:58:56,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:58:56,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 34 [2024-06-28 00:58:56,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 00:58:56,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:56,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 34 [2024-06-28 00:58:56,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:56,662 INFO L124 PetriNetUnfolderBase]: 144/297 cut-off events. [2024-06-28 00:58:56,662 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-06-28 00:58:56,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 297 events. 144/297 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1332 event pairs, 46 based on Foata normal form. 2/298 useless extension candidates. Maximal degree in co-relation 642. Up to 240 conditions per place. [2024-06-28 00:58:56,666 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 30 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2024-06-28 00:58:56,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 47 transitions, 192 flow [2024-06-28 00:58:56,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:58:56,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:58:56,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-06-28 00:58:56,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6985294117647058 [2024-06-28 00:58:56,669 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 83 flow. Second operand 4 states and 95 transitions. [2024-06-28 00:58:56,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 47 transitions, 192 flow [2024-06-28 00:58:56,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:58:56,674 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 116 flow [2024-06-28 00:58:56,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2024-06-28 00:58:56,675 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2024-06-28 00:58:56,675 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 116 flow [2024-06-28 00:58:56,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 00:58:56,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:56,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:56,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:58:56,677 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 00:58:56,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:56,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1420439449, now seen corresponding path program 1 times [2024-06-28 00:58:56,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:56,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922444541] [2024-06-28 00:58:56,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:56,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:56,788 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 00:58:56,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:56,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922444541] [2024-06-28 00:58:56,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922444541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:56,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:56,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:58:56,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262192232] [2024-06-28 00:58:56,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:56,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:58:56,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:56,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:58:56,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:58:56,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:58:56,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 00:58:56,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:56,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:58:56,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:56,877 INFO L124 PetriNetUnfolderBase]: 177/361 cut-off events. [2024-06-28 00:58:56,877 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-06-28 00:58:56,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 361 events. 177/361 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1678 event pairs, 45 based on Foata normal form. 2/362 useless extension candidates. Maximal degree in co-relation 865. Up to 281 conditions per place. [2024-06-28 00:58:56,881 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 41 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2024-06-28 00:58:56,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 59 transitions, 275 flow [2024-06-28 00:58:56,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:58:56,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:58:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-06-28 00:58:56,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6705882352941176 [2024-06-28 00:58:56,887 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 116 flow. Second operand 5 states and 114 transitions. [2024-06-28 00:58:56,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 59 transitions, 275 flow [2024-06-28 00:58:56,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 00:58:56,890 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 172 flow [2024-06-28 00:58:56,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-06-28 00:58:56,892 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2024-06-28 00:58:56,892 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 172 flow [2024-06-28 00:58:56,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 00:58:56,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:56,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:56,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:58:56,893 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 00:58:56,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:56,893 INFO L85 PathProgramCache]: Analyzing trace with hash 102218384, now seen corresponding path program 1 times [2024-06-28 00:58:56,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:56,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714544493] [2024-06-28 00:58:56,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:56,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:57,046 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 00:58:57,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:57,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714544493] [2024-06-28 00:58:57,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714544493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:57,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:57,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:58:57,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927653183] [2024-06-28 00:58:57,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:57,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:58:57,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:57,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:58:57,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:58:57,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:58:57,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 172 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 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 00:58:57,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:57,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:58:57,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:57,157 INFO L124 PetriNetUnfolderBase]: 173/362 cut-off events. [2024-06-28 00:58:57,158 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2024-06-28 00:58:57,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 362 events. 173/362 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1685 event pairs, 42 based on Foata normal form. 4/361 useless extension candidates. Maximal degree in co-relation 969. Up to 247 conditions per place. [2024-06-28 00:58:57,160 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 43 selfloop transitions, 8 changer transitions 0/62 dead transitions. [2024-06-28 00:58:57,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 62 transitions, 316 flow [2024-06-28 00:58:57,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:58:57,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:58:57,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-28 00:58:57,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6421568627450981 [2024-06-28 00:58:57,162 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 172 flow. Second operand 6 states and 131 transitions. [2024-06-28 00:58:57,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 62 transitions, 316 flow [2024-06-28 00:58:57,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 00:58:57,164 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 184 flow [2024-06-28 00:58:57,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2024-06-28 00:58:57,165 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2024-06-28 00:58:57,165 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 184 flow [2024-06-28 00:58:57,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 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 00:58:57,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:57,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:57,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:58:57,166 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 00:58:57,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:57,166 INFO L85 PathProgramCache]: Analyzing trace with hash 433863130, now seen corresponding path program 1 times [2024-06-28 00:58:57,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:57,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27690404] [2024-06-28 00:58:57,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:57,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:57,301 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 00:58:57,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:57,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27690404] [2024-06-28 00:58:57,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27690404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:57,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:57,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:58:57,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884896954] [2024-06-28 00:58:57,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:57,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:58:57,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:57,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:58:57,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:58:57,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:58:57,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:58:57,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:57,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:58:57,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:57,397 INFO L124 PetriNetUnfolderBase]: 180/365 cut-off events. [2024-06-28 00:58:57,397 INFO L125 PetriNetUnfolderBase]: For 453/453 co-relation queries the response was YES. [2024-06-28 00:58:57,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 365 events. 180/365 cut-off events. For 453/453 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1717 event pairs, 34 based on Foata normal form. 1/366 useless extension candidates. Maximal degree in co-relation 1057. Up to 251 conditions per place. [2024-06-28 00:58:57,400 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 42 selfloop transitions, 13 changer transitions 0/66 dead transitions. [2024-06-28 00:58:57,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 368 flow [2024-06-28 00:58:57,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:58:57,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:58:57,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 00:58:57,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2024-06-28 00:58:57,401 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 184 flow. Second operand 6 states and 135 transitions. [2024-06-28 00:58:57,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 368 flow [2024-06-28 00:58:57,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 66 transitions, 347 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 00:58:57,406 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 214 flow [2024-06-28 00:58:57,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-06-28 00:58:57,410 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2024-06-28 00:58:57,410 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 214 flow [2024-06-28 00:58:57,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:58:57,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:57,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:57,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:58:57,412 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 00:58:57,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:57,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1774569478, now seen corresponding path program 1 times [2024-06-28 00:58:57,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:57,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375971987] [2024-06-28 00:58:57,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:57,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:57,500 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 00:58:57,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:57,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375971987] [2024-06-28 00:58:57,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375971987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:57,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:57,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:58:57,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590095627] [2024-06-28 00:58:57,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:57,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:58:57,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:57,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:58:57,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:58:57,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:58:57,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:58:57,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:57,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:58:57,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:57,581 INFO L124 PetriNetUnfolderBase]: 194/391 cut-off events. [2024-06-28 00:58:57,582 INFO L125 PetriNetUnfolderBase]: For 600/600 co-relation queries the response was YES. [2024-06-28 00:58:57,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1212 conditions, 391 events. 194/391 cut-off events. For 600/600 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1900 event pairs, 36 based on Foata normal form. 1/390 useless extension candidates. Maximal degree in co-relation 1189. Up to 272 conditions per place. [2024-06-28 00:58:57,584 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 44 selfloop transitions, 14 changer transitions 0/69 dead transitions. [2024-06-28 00:58:57,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 414 flow [2024-06-28 00:58:57,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:58:57,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:58:57,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 00:58:57,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6519607843137255 [2024-06-28 00:58:57,586 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 214 flow. Second operand 6 states and 133 transitions. [2024-06-28 00:58:57,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 414 flow [2024-06-28 00:58:57,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 69 transitions, 388 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 00:58:57,589 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 262 flow [2024-06-28 00:58:57,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-28 00:58:57,591 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2024-06-28 00:58:57,592 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 262 flow [2024-06-28 00:58:57,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:58:57,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:57,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:57,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:58:57,592 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 00:58:57,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:57,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1774569292, now seen corresponding path program 2 times [2024-06-28 00:58:57,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:57,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298944110] [2024-06-28 00:58:57,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:57,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:57,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:58:57,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:57,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298944110] [2024-06-28 00:58:57,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298944110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:57,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:57,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:58:57,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368480987] [2024-06-28 00:58:57,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:57,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:58:57,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:57,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:58:57,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:58:57,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:58:57,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:58:57,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:57,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:58:57,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:57,840 INFO L124 PetriNetUnfolderBase]: 201/402 cut-off events. [2024-06-28 00:58:57,841 INFO L125 PetriNetUnfolderBase]: For 744/744 co-relation queries the response was YES. [2024-06-28 00:58:57,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 402 events. 201/402 cut-off events. For 744/744 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1942 event pairs, 33 based on Foata normal form. 1/403 useless extension candidates. Maximal degree in co-relation 1284. Up to 302 conditions per place. [2024-06-28 00:58:57,843 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 47 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2024-06-28 00:58:57,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 430 flow [2024-06-28 00:58:57,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:58:57,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:58:57,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-28 00:58:57,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6372549019607843 [2024-06-28 00:58:57,845 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 262 flow. Second operand 6 states and 130 transitions. [2024-06-28 00:58:57,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 430 flow [2024-06-28 00:58:57,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 70 transitions, 419 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 00:58:57,849 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 294 flow [2024-06-28 00:58:57,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-06-28 00:58:57,850 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2024-06-28 00:58:57,850 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 294 flow [2024-06-28 00:58:57,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:58:57,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:57,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:57,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:58:57,851 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 00:58:57,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:57,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1763589502, now seen corresponding path program 2 times [2024-06-28 00:58:57,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:57,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174207875] [2024-06-28 00:58:57,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:57,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:57,953 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 00:58:57,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:57,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174207875] [2024-06-28 00:58:57,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174207875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:57,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:57,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:58:57,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528451075] [2024-06-28 00:58:57,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:57,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:58:57,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:57,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:58:57,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:58:57,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:58:57,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:58:57,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:57,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:58:57,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:58,049 INFO L124 PetriNetUnfolderBase]: 208/417 cut-off events. [2024-06-28 00:58:58,050 INFO L125 PetriNetUnfolderBase]: For 899/899 co-relation queries the response was YES. [2024-06-28 00:58:58,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1426 conditions, 417 events. 208/417 cut-off events. For 899/899 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2006 event pairs, 36 based on Foata normal form. 1/416 useless extension candidates. Maximal degree in co-relation 1399. Up to 306 conditions per place. [2024-06-28 00:58:58,052 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 43 selfloop transitions, 12 changer transitions 0/66 dead transitions. [2024-06-28 00:58:58,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 66 transitions, 444 flow [2024-06-28 00:58:58,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:58:58,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:58:58,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-06-28 00:58:58,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6911764705882353 [2024-06-28 00:58:58,053 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 294 flow. Second operand 4 states and 94 transitions. [2024-06-28 00:58:58,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 66 transitions, 444 flow [2024-06-28 00:58:58,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 415 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:58:58,056 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 317 flow [2024-06-28 00:58:58,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=317, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-06-28 00:58:58,058 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2024-06-28 00:58:58,058 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 317 flow [2024-06-28 00:58:58,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:58:58,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:58,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:58,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:58:58,059 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 00:58:58,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:58,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1751314618, now seen corresponding path program 3 times [2024-06-28 00:58:58,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:58,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756001908] [2024-06-28 00:58:58,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:58,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:58,147 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 00:58:58,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:58,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756001908] [2024-06-28 00:58:58,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756001908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:58,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:58,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:58:58,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482461268] [2024-06-28 00:58:58,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:58,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:58:58,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:58,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:58:58,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:58:58,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:58:58,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 317 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:58:58,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:58,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:58:58,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:58,274 INFO L124 PetriNetUnfolderBase]: 206/425 cut-off events. [2024-06-28 00:58:58,275 INFO L125 PetriNetUnfolderBase]: For 1151/1151 co-relation queries the response was YES. [2024-06-28 00:58:58,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1464 conditions, 425 events. 206/425 cut-off events. For 1151/1151 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2114 event pairs, 35 based on Foata normal form. 1/425 useless extension candidates. Maximal degree in co-relation 1437. Up to 290 conditions per place. [2024-06-28 00:58:58,277 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 46 selfloop transitions, 15 changer transitions 0/72 dead transitions. [2024-06-28 00:58:58,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 72 transitions, 481 flow [2024-06-28 00:58:58,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:58:58,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:58:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-28 00:58:58,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2024-06-28 00:58:58,281 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 317 flow. Second operand 5 states and 115 transitions. [2024-06-28 00:58:58,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 72 transitions, 481 flow [2024-06-28 00:58:58,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 465 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:58:58,284 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 342 flow [2024-06-28 00:58:58,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=342, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2024-06-28 00:58:58,285 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2024-06-28 00:58:58,285 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 342 flow [2024-06-28 00:58:58,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:58:58,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:58,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:58,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:58:58,286 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 00:58:58,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:58,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1763826652, now seen corresponding path program 3 times [2024-06-28 00:58:58,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:58,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408670210] [2024-06-28 00:58:58,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:58,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:58,372 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 00:58:58,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:58,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408670210] [2024-06-28 00:58:58,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408670210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:58,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:58,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:58:58,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047868742] [2024-06-28 00:58:58,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:58,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:58:58,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:58,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:58:58,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:58:58,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:58:58,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 342 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:58:58,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:58,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:58:58,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:58,451 INFO L124 PetriNetUnfolderBase]: 204/423 cut-off events. [2024-06-28 00:58:58,451 INFO L125 PetriNetUnfolderBase]: For 1410/1410 co-relation queries the response was YES. [2024-06-28 00:58:58,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1514 conditions, 423 events. 204/423 cut-off events. For 1410/1410 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2129 event pairs, 38 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 1486. Up to 286 conditions per place. [2024-06-28 00:58:58,453 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 42 selfloop transitions, 16 changer transitions 0/69 dead transitions. [2024-06-28 00:58:58,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 492 flow [2024-06-28 00:58:58,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:58:58,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:58:58,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-06-28 00:58:58,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6647058823529411 [2024-06-28 00:58:58,454 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 342 flow. Second operand 5 states and 113 transitions. [2024-06-28 00:58:58,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 492 flow [2024-06-28 00:58:58,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 69 transitions, 458 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 00:58:58,457 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 348 flow [2024-06-28 00:58:58,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=348, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2024-06-28 00:58:58,458 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2024-06-28 00:58:58,458 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 348 flow [2024-06-28 00:58:58,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:58:58,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:58,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:58,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:58:58,459 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 00:58:58,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:58,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1763580574, now seen corresponding path program 1 times [2024-06-28 00:58:58,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:58,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434569653] [2024-06-28 00:58:58,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:58,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:58,536 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 00:58:58,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:58,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434569653] [2024-06-28 00:58:58,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434569653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:58,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:58,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:58:58,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731729735] [2024-06-28 00:58:58,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:58,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:58:58,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:58,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:58:58,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:58:58,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:58:58,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:58:58,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:58,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:58:58,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:58,612 INFO L124 PetriNetUnfolderBase]: 201/404 cut-off events. [2024-06-28 00:58:58,612 INFO L125 PetriNetUnfolderBase]: For 1219/1219 co-relation queries the response was YES. [2024-06-28 00:58:58,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 404 events. 201/404 cut-off events. For 1219/1219 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1977 event pairs, 35 based on Foata normal form. 2/404 useless extension candidates. Maximal degree in co-relation 1455. Up to 315 conditions per place. [2024-06-28 00:58:58,614 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 47 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2024-06-28 00:58:58,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 64 transitions, 476 flow [2024-06-28 00:58:58,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:58:58,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:58:58,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-06-28 00:58:58,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-06-28 00:58:58,615 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 348 flow. Second operand 4 states and 88 transitions. [2024-06-28 00:58:58,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 64 transitions, 476 flow [2024-06-28 00:58:58,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 439 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 00:58:58,618 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 327 flow [2024-06-28 00:58:58,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=327, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2024-06-28 00:58:58,619 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2024-06-28 00:58:58,619 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 327 flow [2024-06-28 00:58:58,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:58:58,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:58,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:58,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:58:58,620 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 00:58:58,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:58,620 INFO L85 PathProgramCache]: Analyzing trace with hash 564855730, now seen corresponding path program 1 times [2024-06-28 00:58:58,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:58,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729325657] [2024-06-28 00:58:58,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:58,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:58,699 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 00:58:58,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:58,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729325657] [2024-06-28 00:58:58,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729325657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:58,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:58,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:58:58,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669015858] [2024-06-28 00:58:58,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:58,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:58:58,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:58,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:58:58,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:58:58,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:58:58,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 327 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:58:58,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:58,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:58:58,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:58,801 INFO L124 PetriNetUnfolderBase]: 208/419 cut-off events. [2024-06-28 00:58:58,802 INFO L125 PetriNetUnfolderBase]: For 1166/1166 co-relation queries the response was YES. [2024-06-28 00:58:58,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 419 events. 208/419 cut-off events. For 1166/1166 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2057 event pairs, 34 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 1454. Up to 227 conditions per place. [2024-06-28 00:58:58,804 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 48 selfloop transitions, 24 changer transitions 0/83 dead transitions. [2024-06-28 00:58:58,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 83 transitions, 569 flow [2024-06-28 00:58:58,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:58:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:58:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 00:58:58,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6596638655462185 [2024-06-28 00:58:58,805 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 327 flow. Second operand 7 states and 157 transitions. [2024-06-28 00:58:58,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 83 transitions, 569 flow [2024-06-28 00:58:58,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 83 transitions, 557 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:58:58,809 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 396 flow [2024-06-28 00:58:58,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=396, PETRI_PLACES=71, PETRI_TRANSITIONS=58} [2024-06-28 00:58:58,810 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 35 predicate places. [2024-06-28 00:58:58,810 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 396 flow [2024-06-28 00:58:58,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:58:58,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:58,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:58,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:58:58,811 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 00:58:58,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:58,812 INFO L85 PathProgramCache]: Analyzing trace with hash -822926208, now seen corresponding path program 2 times [2024-06-28 00:58:58,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:58,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599059323] [2024-06-28 00:58:58,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:58,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:58,898 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 00:58:58,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:58,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599059323] [2024-06-28 00:58:58,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599059323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:58,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:58,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:58:58,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000090113] [2024-06-28 00:58:58,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:58,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:58:58,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:58,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:58:58,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:58:58,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:58:58,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 396 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:58:58,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:58,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:58:58,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:59,010 INFO L124 PetriNetUnfolderBase]: 224/452 cut-off events. [2024-06-28 00:58:59,010 INFO L125 PetriNetUnfolderBase]: For 1567/1567 co-relation queries the response was YES. [2024-06-28 00:58:59,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1719 conditions, 452 events. 224/452 cut-off events. For 1567/1567 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2303 event pairs, 34 based on Foata normal form. 1/451 useless extension candidates. Maximal degree in co-relation 1689. Up to 295 conditions per place. [2024-06-28 00:58:59,013 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 52 selfloop transitions, 21 changer transitions 0/84 dead transitions. [2024-06-28 00:58:59,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 84 transitions, 642 flow [2024-06-28 00:58:59,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:58:59,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:58:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 00:58:59,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-06-28 00:58:59,015 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 396 flow. Second operand 7 states and 154 transitions. [2024-06-28 00:58:59,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 84 transitions, 642 flow [2024-06-28 00:58:59,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 84 transitions, 608 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 00:58:59,019 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 445 flow [2024-06-28 00:58:59,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=445, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-06-28 00:58:59,020 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 39 predicate places. [2024-06-28 00:58:59,020 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 445 flow [2024-06-28 00:58:59,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:58:59,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:59,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:59,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:58:59,021 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 00:58:59,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:59,021 INFO L85 PathProgramCache]: Analyzing trace with hash -822920628, now seen corresponding path program 3 times [2024-06-28 00:58:59,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:59,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625431103] [2024-06-28 00:58:59,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:59,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:59,111 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 00:58:59,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:59,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625431103] [2024-06-28 00:58:59,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625431103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:59,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:59,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:58:59,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277127951] [2024-06-28 00:58:59,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:59,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:58:59,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:59,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:58:59,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:58:59,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:58:59,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 445 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:58:59,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:59,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:58:59,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:59,222 INFO L124 PetriNetUnfolderBase]: 222/449 cut-off events. [2024-06-28 00:58:59,223 INFO L125 PetriNetUnfolderBase]: For 1685/1685 co-relation queries the response was YES. [2024-06-28 00:58:59,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1768 conditions, 449 events. 222/449 cut-off events. For 1685/1685 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2270 event pairs, 34 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 1736. Up to 293 conditions per place. [2024-06-28 00:58:59,225 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 56 selfloop transitions, 22 changer transitions 0/89 dead transitions. [2024-06-28 00:58:59,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 89 transitions, 659 flow [2024-06-28 00:58:59,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:58:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:58:59,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-28 00:58:59,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6176470588235294 [2024-06-28 00:58:59,227 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 445 flow. Second operand 9 states and 189 transitions. [2024-06-28 00:58:59,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 89 transitions, 659 flow [2024-06-28 00:58:59,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 89 transitions, 630 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 00:58:59,231 INFO L231 Difference]: Finished difference. Result has 81 places, 62 transitions, 465 flow [2024-06-28 00:58:59,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=465, PETRI_PLACES=81, PETRI_TRANSITIONS=62} [2024-06-28 00:58:59,231 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 45 predicate places. [2024-06-28 00:58:59,232 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 62 transitions, 465 flow [2024-06-28 00:58:59,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:58:59,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:59,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:59,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:58:59,232 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 00:58:59,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:59,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1163300688, now seen corresponding path program 4 times [2024-06-28 00:58:59,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:59,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999335980] [2024-06-28 00:58:59,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:59,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:59,332 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 00:58:59,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:59,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999335980] [2024-06-28 00:58:59,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999335980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:59,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:59,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:58:59,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087483474] [2024-06-28 00:58:59,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:59,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:58:59,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:59,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:58:59,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:58:59,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:58:59,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 62 transitions, 465 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:58:59,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:59,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:58:59,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:59,467 INFO L124 PetriNetUnfolderBase]: 229/476 cut-off events. [2024-06-28 00:58:59,468 INFO L125 PetriNetUnfolderBase]: For 2052/2052 co-relation queries the response was YES. [2024-06-28 00:58:59,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1908 conditions, 476 events. 229/476 cut-off events. For 2052/2052 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2481 event pairs, 34 based on Foata normal form. 1/474 useless extension candidates. Maximal degree in co-relation 1874. Up to 319 conditions per place. [2024-06-28 00:58:59,470 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 54 selfloop transitions, 17 changer transitions 0/82 dead transitions. [2024-06-28 00:58:59,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 667 flow [2024-06-28 00:58:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:58:59,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:58:59,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-28 00:58:59,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6941176470588235 [2024-06-28 00:58:59,472 INFO L175 Difference]: Start difference. First operand has 81 places, 62 transitions, 465 flow. Second operand 5 states and 118 transitions. [2024-06-28 00:58:59,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 667 flow [2024-06-28 00:58:59,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 82 transitions, 618 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 00:58:59,476 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 483 flow [2024-06-28 00:58:59,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=483, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2024-06-28 00:58:59,477 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 42 predicate places. [2024-06-28 00:58:59,477 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 483 flow [2024-06-28 00:58:59,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:58:59,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:59,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:59,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:58:59,478 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 00:58:59,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:59,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1291910556, now seen corresponding path program 5 times [2024-06-28 00:58:59,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:59,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736972893] [2024-06-28 00:58:59,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:59,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:59,559 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 00:58:59,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:59,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736972893] [2024-06-28 00:58:59,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736972893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:59,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:59,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:58:59,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534122524] [2024-06-28 00:58:59,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:59,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:58:59,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:59,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:58:59,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:58:59,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:58:59,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 483 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:58:59,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:59,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:58:59,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:59,695 INFO L124 PetriNetUnfolderBase]: 236/495 cut-off events. [2024-06-28 00:58:59,695 INFO L125 PetriNetUnfolderBase]: For 2381/2381 co-relation queries the response was YES. [2024-06-28 00:58:59,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 495 events. 236/495 cut-off events. For 2381/2381 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2599 event pairs, 36 based on Foata normal form. 1/493 useless extension candidates. Maximal degree in co-relation 1965. Up to 273 conditions per place. [2024-06-28 00:58:59,698 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 51 selfloop transitions, 32 changer transitions 0/94 dead transitions. [2024-06-28 00:58:59,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 94 transitions, 759 flow [2024-06-28 00:58:59,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:58:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:58:59,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-28 00:58:59,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-06-28 00:58:59,700 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 483 flow. Second operand 8 states and 176 transitions. [2024-06-28 00:58:59,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 94 transitions, 759 flow [2024-06-28 00:58:59,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 94 transitions, 720 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 00:58:59,705 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 538 flow [2024-06-28 00:58:59,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=538, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2024-06-28 00:58:59,706 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 46 predicate places. [2024-06-28 00:58:59,706 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 538 flow [2024-06-28 00:58:59,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:58:59,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:59,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:59,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:58:59,706 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 00:58:59,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:59,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1543822278, now seen corresponding path program 6 times [2024-06-28 00:58:59,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:59,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868430917] [2024-06-28 00:58:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:59,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:59,783 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 00:58:59,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:59,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868430917] [2024-06-28 00:58:59,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868430917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:59,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:59,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:58:59,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020653242] [2024-06-28 00:58:59,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:59,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:58:59,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:59,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:58:59,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:58:59,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:58:59,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 538 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:58:59,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:59,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:58:59,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:59,911 INFO L124 PetriNetUnfolderBase]: 234/494 cut-off events. [2024-06-28 00:58:59,911 INFO L125 PetriNetUnfolderBase]: For 2640/2640 co-relation queries the response was YES. [2024-06-28 00:58:59,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2049 conditions, 494 events. 234/494 cut-off events. For 2640/2640 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2601 event pairs, 40 based on Foata normal form. 1/490 useless extension candidates. Maximal degree in co-relation 2014. Up to 271 conditions per place. [2024-06-28 00:58:59,915 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 46 selfloop transitions, 30 changer transitions 0/87 dead transitions. [2024-06-28 00:58:59,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 87 transitions, 738 flow [2024-06-28 00:58:59,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:58:59,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:58:59,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 00:58:59,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6715686274509803 [2024-06-28 00:58:59,916 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 538 flow. Second operand 6 states and 137 transitions. [2024-06-28 00:58:59,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 87 transitions, 738 flow [2024-06-28 00:58:59,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 87 transitions, 641 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:58:59,924 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 509 flow [2024-06-28 00:58:59,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=509, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2024-06-28 00:58:59,925 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 45 predicate places. [2024-06-28 00:58:59,925 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 509 flow [2024-06-28 00:58:59,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:58:59,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:59,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:59,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:58:59,926 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 00:58:59,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:59,927 INFO L85 PathProgramCache]: Analyzing trace with hash 327797145, now seen corresponding path program 1 times [2024-06-28 00:58:59,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:59,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081790592] [2024-06-28 00:58:59,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:59,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:00,011 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 00:59:00,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:00,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081790592] [2024-06-28 00:59:00,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081790592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:00,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:00,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:59:00,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079952906] [2024-06-28 00:59:00,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:00,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:59:00,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:00,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:59:00,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:59:00,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:00,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 509 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:59:00,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:00,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:00,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:00,129 INFO L124 PetriNetUnfolderBase]: 244/494 cut-off events. [2024-06-28 00:59:00,129 INFO L125 PetriNetUnfolderBase]: For 2299/2299 co-relation queries the response was YES. [2024-06-28 00:59:00,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2024 conditions, 494 events. 244/494 cut-off events. For 2299/2299 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2575 event pairs, 10 based on Foata normal form. 2/496 useless extension candidates. Maximal degree in co-relation 1989. Up to 276 conditions per place. [2024-06-28 00:59:00,133 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 64 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2024-06-28 00:59:00,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 94 transitions, 767 flow [2024-06-28 00:59:00,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:59:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:59:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-28 00:59:00,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-28 00:59:00,134 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 509 flow. Second operand 7 states and 153 transitions. [2024-06-28 00:59:00,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 94 transitions, 767 flow [2024-06-28 00:59:00,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 94 transitions, 700 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 00:59:00,139 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 490 flow [2024-06-28 00:59:00,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=490, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-06-28 00:59:00,140 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 46 predicate places. [2024-06-28 00:59:00,140 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 490 flow [2024-06-28 00:59:00,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:59:00,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:00,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:00,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:59:00,141 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 00:59:00,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:00,141 INFO L85 PathProgramCache]: Analyzing trace with hash 143795817, now seen corresponding path program 2 times [2024-06-28 00:59:00,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:00,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576457397] [2024-06-28 00:59:00,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:00,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:00,223 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 00:59:00,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:00,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576457397] [2024-06-28 00:59:00,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576457397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:00,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:00,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:59:00,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840536466] [2024-06-28 00:59:00,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:00,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:59:00,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:00,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:59:00,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:59:00,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:00,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 490 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:59:00,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:00,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:00,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:00,335 INFO L124 PetriNetUnfolderBase]: 254/512 cut-off events. [2024-06-28 00:59:00,336 INFO L125 PetriNetUnfolderBase]: For 2212/2212 co-relation queries the response was YES. [2024-06-28 00:59:00,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2046 conditions, 512 events. 254/512 cut-off events. For 2212/2212 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2724 event pairs, 29 based on Foata normal form. 2/514 useless extension candidates. Maximal degree in co-relation 2011. Up to 349 conditions per place. [2024-06-28 00:59:00,339 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 64 selfloop transitions, 18 changer transitions 0/93 dead transitions. [2024-06-28 00:59:00,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 93 transitions, 716 flow [2024-06-28 00:59:00,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:59:00,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:59:00,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-28 00:59:00,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-28 00:59:00,340 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 490 flow. Second operand 7 states and 153 transitions. [2024-06-28 00:59:00,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 93 transitions, 716 flow [2024-06-28 00:59:00,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 93 transitions, 679 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 00:59:00,345 INFO L231 Difference]: Finished difference. Result has 85 places, 68 transitions, 501 flow [2024-06-28 00:59:00,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=501, PETRI_PLACES=85, PETRI_TRANSITIONS=68} [2024-06-28 00:59:00,346 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 49 predicate places. [2024-06-28 00:59:00,346 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 68 transitions, 501 flow [2024-06-28 00:59:00,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:59:00,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:00,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:00,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:59:00,347 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 00:59:00,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:00,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1190454255, now seen corresponding path program 3 times [2024-06-28 00:59:00,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:00,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044068278] [2024-06-28 00:59:00,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:00,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:00,433 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 00:59:00,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:00,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044068278] [2024-06-28 00:59:00,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044068278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:00,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:00,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:59:00,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473270249] [2024-06-28 00:59:00,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:00,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:59:00,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:00,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:59:00,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:59:00,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:00,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 68 transitions, 501 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:59:00,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:00,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:00,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:00,588 INFO L124 PetriNetUnfolderBase]: 264/538 cut-off events. [2024-06-28 00:59:00,589 INFO L125 PetriNetUnfolderBase]: For 2553/2553 co-relation queries the response was YES. [2024-06-28 00:59:00,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2108 conditions, 538 events. 264/538 cut-off events. For 2553/2553 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2921 event pairs, 29 based on Foata normal form. 2/537 useless extension candidates. Maximal degree in co-relation 2072. Up to 394 conditions per place. [2024-06-28 00:59:00,592 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 67 selfloop transitions, 13 changer transitions 0/91 dead transitions. [2024-06-28 00:59:00,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 714 flow [2024-06-28 00:59:00,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:59:00,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:59:00,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-28 00:59:00,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6260504201680672 [2024-06-28 00:59:00,594 INFO L175 Difference]: Start difference. First operand has 85 places, 68 transitions, 501 flow. Second operand 7 states and 149 transitions. [2024-06-28 00:59:00,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 714 flow [2024-06-28 00:59:00,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 91 transitions, 678 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 00:59:00,600 INFO L231 Difference]: Finished difference. Result has 87 places, 69 transitions, 502 flow [2024-06-28 00:59:00,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=502, PETRI_PLACES=87, PETRI_TRANSITIONS=69} [2024-06-28 00:59:00,601 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 51 predicate places. [2024-06-28 00:59:00,601 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 69 transitions, 502 flow [2024-06-28 00:59:00,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:59:00,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:00,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:00,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:59:00,601 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 00:59:00,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:00,602 INFO L85 PathProgramCache]: Analyzing trace with hash 259271685, now seen corresponding path program 1 times [2024-06-28 00:59:00,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:00,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407626200] [2024-06-28 00:59:00,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:00,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:00,682 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 00:59:00,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:00,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407626200] [2024-06-28 00:59:00,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407626200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:00,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:00,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:59:00,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121018701] [2024-06-28 00:59:00,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:00,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:59:00,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:00,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:59:00,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:59:00,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:00,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 69 transitions, 502 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:59:00,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:00,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:00,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:00,780 INFO L124 PetriNetUnfolderBase]: 274/548 cut-off events. [2024-06-28 00:59:00,780 INFO L125 PetriNetUnfolderBase]: For 2590/2590 co-relation queries the response was YES. [2024-06-28 00:59:00,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2154 conditions, 548 events. 274/548 cut-off events. For 2590/2590 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2949 event pairs, 32 based on Foata normal form. 2/548 useless extension candidates. Maximal degree in co-relation 2117. Up to 391 conditions per place. [2024-06-28 00:59:00,784 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 64 selfloop transitions, 17 changer transitions 0/92 dead transitions. [2024-06-28 00:59:00,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 92 transitions, 718 flow [2024-06-28 00:59:00,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:59:00,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:59:00,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-28 00:59:00,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.634453781512605 [2024-06-28 00:59:00,785 INFO L175 Difference]: Start difference. First operand has 87 places, 69 transitions, 502 flow. Second operand 7 states and 151 transitions. [2024-06-28 00:59:00,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 92 transitions, 718 flow [2024-06-28 00:59:00,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 92 transitions, 692 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 00:59:00,792 INFO L231 Difference]: Finished difference. Result has 89 places, 70 transitions, 522 flow [2024-06-28 00:59:00,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=522, PETRI_PLACES=89, PETRI_TRANSITIONS=70} [2024-06-28 00:59:00,792 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 53 predicate places. [2024-06-28 00:59:00,793 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 70 transitions, 522 flow [2024-06-28 00:59:00,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:59:00,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:00,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:00,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:59:00,793 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 00:59:00,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:00,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1474504489, now seen corresponding path program 4 times [2024-06-28 00:59:00,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:00,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875624665] [2024-06-28 00:59:00,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:00,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:00,876 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 00:59:00,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:00,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875624665] [2024-06-28 00:59:00,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875624665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:00,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:00,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:59:00,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276386009] [2024-06-28 00:59:00,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:00,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:59:00,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:00,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:59:00,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:59:00,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:00,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 70 transitions, 522 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:59:00,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:00,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:00,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:01,008 INFO L124 PetriNetUnfolderBase]: 271/554 cut-off events. [2024-06-28 00:59:01,008 INFO L125 PetriNetUnfolderBase]: For 2771/2771 co-relation queries the response was YES. [2024-06-28 00:59:01,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2160 conditions, 554 events. 271/554 cut-off events. For 2771/2771 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3021 event pairs, 11 based on Foata normal form. 2/553 useless extension candidates. Maximal degree in co-relation 2122. Up to 347 conditions per place. [2024-06-28 00:59:01,012 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 63 selfloop transitions, 18 changer transitions 0/92 dead transitions. [2024-06-28 00:59:01,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 734 flow [2024-06-28 00:59:01,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:59:01,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:59:01,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-28 00:59:01,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-06-28 00:59:01,013 INFO L175 Difference]: Start difference. First operand has 89 places, 70 transitions, 522 flow. Second operand 6 states and 134 transitions. [2024-06-28 00:59:01,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 734 flow [2024-06-28 00:59:01,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 92 transitions, 698 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:59:01,021 INFO L231 Difference]: Finished difference. Result has 90 places, 70 transitions, 530 flow [2024-06-28 00:59:01,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=530, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2024-06-28 00:59:01,022 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 54 predicate places. [2024-06-28 00:59:01,022 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 530 flow [2024-06-28 00:59:01,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:59:01,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:01,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:01,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:59:01,022 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 00:59:01,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:01,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1474689187, now seen corresponding path program 2 times [2024-06-28 00:59:01,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:01,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805072758] [2024-06-28 00:59:01,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:01,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:01,122 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 00:59:01,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:01,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805072758] [2024-06-28 00:59:01,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805072758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:01,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:01,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:59:01,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035548716] [2024-06-28 00:59:01,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:01,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:59:01,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:01,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:59:01,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:59:01,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:01,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 530 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:59:01,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:01,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:01,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:01,219 INFO L124 PetriNetUnfolderBase]: 281/561 cut-off events. [2024-06-28 00:59:01,220 INFO L125 PetriNetUnfolderBase]: For 2996/2996 co-relation queries the response was YES. [2024-06-28 00:59:01,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2247 conditions, 561 events. 281/561 cut-off events. For 2996/2996 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3029 event pairs, 31 based on Foata normal form. 2/561 useless extension candidates. Maximal degree in co-relation 2208. Up to 390 conditions per place. [2024-06-28 00:59:01,223 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 61 selfloop transitions, 18 changer transitions 0/90 dead transitions. [2024-06-28 00:59:01,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 738 flow [2024-06-28 00:59:01,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:59:01,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:59:01,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 00:59:01,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-06-28 00:59:01,224 INFO L175 Difference]: Start difference. First operand has 90 places, 70 transitions, 530 flow. Second operand 6 states and 132 transitions. [2024-06-28 00:59:01,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 90 transitions, 738 flow [2024-06-28 00:59:01,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 692 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 00:59:01,232 INFO L231 Difference]: Finished difference. Result has 90 places, 71 transitions, 536 flow [2024-06-28 00:59:01,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=536, PETRI_PLACES=90, PETRI_TRANSITIONS=71} [2024-06-28 00:59:01,232 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 54 predicate places. [2024-06-28 00:59:01,233 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 71 transitions, 536 flow [2024-06-28 00:59:01,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:59:01,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:01,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:01,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:59:01,233 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 00:59:01,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:01,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1710864547, now seen corresponding path program 3 times [2024-06-28 00:59:01,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:01,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452149734] [2024-06-28 00:59:01,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:01,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:01,320 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 00:59:01,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:01,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452149734] [2024-06-28 00:59:01,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452149734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:01,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:01,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:59:01,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097274790] [2024-06-28 00:59:01,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:01,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:59:01,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:01,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:59:01,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:59:01,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:01,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 71 transitions, 536 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:59:01,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:01,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:01,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:01,445 INFO L124 PetriNetUnfolderBase]: 291/591 cut-off events. [2024-06-28 00:59:01,445 INFO L125 PetriNetUnfolderBase]: For 2956/2956 co-relation queries the response was YES. [2024-06-28 00:59:01,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2316 conditions, 591 events. 291/591 cut-off events. For 2956/2956 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3257 event pairs, 37 based on Foata normal form. 2/587 useless extension candidates. Maximal degree in co-relation 2277. Up to 436 conditions per place. [2024-06-28 00:59:01,449 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 64 selfloop transitions, 13 changer transitions 0/88 dead transitions. [2024-06-28 00:59:01,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 88 transitions, 736 flow [2024-06-28 00:59:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:59:01,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:59:01,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-06-28 00:59:01,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6647058823529411 [2024-06-28 00:59:01,450 INFO L175 Difference]: Start difference. First operand has 90 places, 71 transitions, 536 flow. Second operand 5 states and 113 transitions. [2024-06-28 00:59:01,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 88 transitions, 736 flow [2024-06-28 00:59:01,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 88 transitions, 694 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 00:59:01,458 INFO L231 Difference]: Finished difference. Result has 91 places, 72 transitions, 536 flow [2024-06-28 00:59:01,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=536, PETRI_PLACES=91, PETRI_TRANSITIONS=72} [2024-06-28 00:59:01,458 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 55 predicate places. [2024-06-28 00:59:01,458 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 72 transitions, 536 flow [2024-06-28 00:59:01,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:59:01,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:01,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:01,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:59:01,459 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 00:59:01,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:01,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1711161217, now seen corresponding path program 4 times [2024-06-28 00:59:01,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:01,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155320617] [2024-06-28 00:59:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:01,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:01,558 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 00:59:01,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:01,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155320617] [2024-06-28 00:59:01,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155320617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:01,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:01,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:59:01,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757983953] [2024-06-28 00:59:01,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:01,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:59:01,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:01,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:59:01,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:59:01,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:01,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 72 transitions, 536 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:59:01,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:01,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:01,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:01,681 INFO L124 PetriNetUnfolderBase]: 288/586 cut-off events. [2024-06-28 00:59:01,681 INFO L125 PetriNetUnfolderBase]: For 2591/2591 co-relation queries the response was YES. [2024-06-28 00:59:01,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2233 conditions, 586 events. 288/586 cut-off events. For 2591/2591 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3253 event pairs, 32 based on Foata normal form. 2/582 useless extension candidates. Maximal degree in co-relation 2193. Up to 399 conditions per place. [2024-06-28 00:59:01,684 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 66 selfloop transitions, 15 changer transitions 0/92 dead transitions. [2024-06-28 00:59:01,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 92 transitions, 742 flow [2024-06-28 00:59:01,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:59:01,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:59:01,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 00:59:01,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-06-28 00:59:01,686 INFO L175 Difference]: Start difference. First operand has 91 places, 72 transitions, 536 flow. Second operand 6 states and 132 transitions. [2024-06-28 00:59:01,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 92 transitions, 742 flow [2024-06-28 00:59:01,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 712 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 00:59:01,707 INFO L231 Difference]: Finished difference. Result has 94 places, 72 transitions, 540 flow [2024-06-28 00:59:01,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=540, PETRI_PLACES=94, PETRI_TRANSITIONS=72} [2024-06-28 00:59:01,708 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 58 predicate places. [2024-06-28 00:59:01,708 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 72 transitions, 540 flow [2024-06-28 00:59:01,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:59:01,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:01,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:01,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:59:01,709 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 00:59:01,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:01,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1550730355, now seen corresponding path program 1 times [2024-06-28 00:59:01,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:01,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071332413] [2024-06-28 00:59:01,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:01,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:01,782 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 00:59:01,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:01,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071332413] [2024-06-28 00:59:01,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071332413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:01,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:01,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:59:01,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672662035] [2024-06-28 00:59:01,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:01,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:59:01,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:01,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:59:01,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:59:01,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 34 [2024-06-28 00:59:01,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 72 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:01,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:01,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 34 [2024-06-28 00:59:01,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:01,836 INFO L124 PetriNetUnfolderBase]: 148/433 cut-off events. [2024-06-28 00:59:01,836 INFO L125 PetriNetUnfolderBase]: For 1023/1028 co-relation queries the response was YES. [2024-06-28 00:59:01,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 433 events. 148/433 cut-off events. For 1023/1028 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2498 event pairs, 7 based on Foata normal form. 27/412 useless extension candidates. Maximal degree in co-relation 1248. Up to 151 conditions per place. [2024-06-28 00:59:01,840 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 19 selfloop transitions, 22 changer transitions 1/81 dead transitions. [2024-06-28 00:59:01,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 81 transitions, 654 flow [2024-06-28 00:59:01,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:59:01,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:59:01,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-06-28 00:59:01,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-06-28 00:59:01,841 INFO L175 Difference]: Start difference. First operand has 94 places, 72 transitions, 540 flow. Second operand 4 states and 102 transitions. [2024-06-28 00:59:01,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 81 transitions, 654 flow [2024-06-28 00:59:01,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 81 transitions, 604 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 00:59:01,846 INFO L231 Difference]: Finished difference. Result has 94 places, 72 transitions, 580 flow [2024-06-28 00:59:01,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=580, PETRI_PLACES=94, PETRI_TRANSITIONS=72} [2024-06-28 00:59:01,847 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 58 predicate places. [2024-06-28 00:59:01,847 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 72 transitions, 580 flow [2024-06-28 00:59:01,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:01,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:01,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:01,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:59:01,847 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 00:59:01,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:01,848 INFO L85 PathProgramCache]: Analyzing trace with hash 422152095, now seen corresponding path program 1 times [2024-06-28 00:59:01,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:01,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027549936] [2024-06-28 00:59:01,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:01,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:01,936 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 00:59:01,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:01,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027549936] [2024-06-28 00:59:01,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027549936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:01,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:01,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:59:01,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814392875] [2024-06-28 00:59:01,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:01,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:59:01,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:01,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:59:01,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:59:01,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:01,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 72 transitions, 580 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:01,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:01,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:01,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:02,078 INFO L124 PetriNetUnfolderBase]: 263/610 cut-off events. [2024-06-28 00:59:02,078 INFO L125 PetriNetUnfolderBase]: For 4171/4171 co-relation queries the response was YES. [2024-06-28 00:59:02,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2170 conditions, 610 events. 263/610 cut-off events. For 4171/4171 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3395 event pairs, 95 based on Foata normal form. 6/590 useless extension candidates. Maximal degree in co-relation 2127. Up to 190 conditions per place. [2024-06-28 00:59:02,081 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 58 selfloop transitions, 32 changer transitions 0/101 dead transitions. [2024-06-28 00:59:02,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 101 transitions, 882 flow [2024-06-28 00:59:02,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:59:02,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:59:02,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-28 00:59:02,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6323529411764706 [2024-06-28 00:59:02,083 INFO L175 Difference]: Start difference. First operand has 94 places, 72 transitions, 580 flow. Second operand 8 states and 172 transitions. [2024-06-28 00:59:02,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 101 transitions, 882 flow [2024-06-28 00:59:02,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 101 transitions, 782 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 00:59:02,091 INFO L231 Difference]: Finished difference. Result has 97 places, 72 transitions, 563 flow [2024-06-28 00:59:02,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=563, PETRI_PLACES=97, PETRI_TRANSITIONS=72} [2024-06-28 00:59:02,092 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 61 predicate places. [2024-06-28 00:59:02,092 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 72 transitions, 563 flow [2024-06-28 00:59:02,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:02,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:02,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:02,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:59:02,093 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 00:59:02,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:02,093 INFO L85 PathProgramCache]: Analyzing trace with hash 162703619, now seen corresponding path program 2 times [2024-06-28 00:59:02,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:02,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373206865] [2024-06-28 00:59:02,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:02,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:02,171 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 00:59:02,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:02,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373206865] [2024-06-28 00:59:02,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373206865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:02,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:02,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:59:02,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248629278] [2024-06-28 00:59:02,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:02,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:59:02,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:02,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:59:02,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:59:02,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:02,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 72 transitions, 563 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:02,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:02,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:02,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:02,339 INFO L124 PetriNetUnfolderBase]: 327/735 cut-off events. [2024-06-28 00:59:02,339 INFO L125 PetriNetUnfolderBase]: For 5321/5321 co-relation queries the response was YES. [2024-06-28 00:59:02,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2522 conditions, 735 events. 327/735 cut-off events. For 5321/5321 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4390 event pairs, 145 based on Foata normal form. 6/707 useless extension candidates. Maximal degree in co-relation 2481. Up to 396 conditions per place. [2024-06-28 00:59:02,347 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 56 selfloop transitions, 32 changer transitions 0/99 dead transitions. [2024-06-28 00:59:02,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 99 transitions, 847 flow [2024-06-28 00:59:02,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:59:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:59:02,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-06-28 00:59:02,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6360294117647058 [2024-06-28 00:59:02,348 INFO L175 Difference]: Start difference. First operand has 97 places, 72 transitions, 563 flow. Second operand 8 states and 173 transitions. [2024-06-28 00:59:02,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 99 transitions, 847 flow [2024-06-28 00:59:02,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 99 transitions, 784 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 00:59:02,358 INFO L231 Difference]: Finished difference. Result has 99 places, 72 transitions, 567 flow [2024-06-28 00:59:02,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=567, PETRI_PLACES=99, PETRI_TRANSITIONS=72} [2024-06-28 00:59:02,362 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 63 predicate places. [2024-06-28 00:59:02,362 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 72 transitions, 567 flow [2024-06-28 00:59:02,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:02,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:02,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:02,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:59:02,362 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 00:59:02,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:02,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1612244067, now seen corresponding path program 3 times [2024-06-28 00:59:02,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:02,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808004719] [2024-06-28 00:59:02,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:02,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:02,459 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 00:59:02,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:02,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808004719] [2024-06-28 00:59:02,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808004719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:02,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:02,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:59:02,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72542454] [2024-06-28 00:59:02,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:02,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:59:02,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:02,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:59:02,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:59:02,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:02,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 72 transitions, 567 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:02,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:02,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:02,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:02,588 INFO L124 PetriNetUnfolderBase]: 288/650 cut-off events. [2024-06-28 00:59:02,589 INFO L125 PetriNetUnfolderBase]: For 3702/3702 co-relation queries the response was YES. [2024-06-28 00:59:02,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2091 conditions, 650 events. 288/650 cut-off events. For 3702/3702 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3757 event pairs, 130 based on Foata normal form. 8/625 useless extension candidates. Maximal degree in co-relation 2049. Up to 403 conditions per place. [2024-06-28 00:59:02,592 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 50 selfloop transitions, 32 changer transitions 0/93 dead transitions. [2024-06-28 00:59:02,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 93 transitions, 787 flow [2024-06-28 00:59:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:59:02,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:59:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-28 00:59:02,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6139705882352942 [2024-06-28 00:59:02,593 INFO L175 Difference]: Start difference. First operand has 99 places, 72 transitions, 567 flow. Second operand 8 states and 167 transitions. [2024-06-28 00:59:02,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 93 transitions, 787 flow [2024-06-28 00:59:02,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 93 transitions, 724 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 00:59:02,601 INFO L231 Difference]: Finished difference. Result has 101 places, 72 transitions, 572 flow [2024-06-28 00:59:02,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=572, PETRI_PLACES=101, PETRI_TRANSITIONS=72} [2024-06-28 00:59:02,602 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 65 predicate places. [2024-06-28 00:59:02,602 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 72 transitions, 572 flow [2024-06-28 00:59:02,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:02,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:02,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:02,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:59:02,602 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 00:59:02,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:02,603 INFO L85 PathProgramCache]: Analyzing trace with hash -558089537, now seen corresponding path program 4 times [2024-06-28 00:59:02,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:02,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089279885] [2024-06-28 00:59:02,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:02,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:02,691 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 00:59:02,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:02,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089279885] [2024-06-28 00:59:02,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089279885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:02,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:02,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:59:02,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586929293] [2024-06-28 00:59:02,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:02,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:59:02,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:02,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:59:02,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:59:02,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:02,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 72 transitions, 572 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:02,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:02,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:02,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:02,827 INFO L124 PetriNetUnfolderBase]: 320/727 cut-off events. [2024-06-28 00:59:02,827 INFO L125 PetriNetUnfolderBase]: For 4027/4027 co-relation queries the response was YES. [2024-06-28 00:59:02,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2275 conditions, 727 events. 320/727 cut-off events. For 4027/4027 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4409 event pairs, 156 based on Foata normal form. 8/697 useless extension candidates. Maximal degree in co-relation 2232. Up to 494 conditions per place. [2024-06-28 00:59:02,830 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 58 selfloop transitions, 21 changer transitions 0/90 dead transitions. [2024-06-28 00:59:02,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 90 transitions, 778 flow [2024-06-28 00:59:02,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:59:02,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:59:02,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-28 00:59:02,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6029411764705882 [2024-06-28 00:59:02,831 INFO L175 Difference]: Start difference. First operand has 101 places, 72 transitions, 572 flow. Second operand 8 states and 164 transitions. [2024-06-28 00:59:02,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 90 transitions, 778 flow [2024-06-28 00:59:02,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 90 transitions, 716 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 00:59:02,841 INFO L231 Difference]: Finished difference. Result has 103 places, 72 transitions, 556 flow [2024-06-28 00:59:02,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=556, PETRI_PLACES=103, PETRI_TRANSITIONS=72} [2024-06-28 00:59:02,841 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 67 predicate places. [2024-06-28 00:59:02,841 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 72 transitions, 556 flow [2024-06-28 00:59:02,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:02,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:02,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:02,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:59:02,842 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 00:59:02,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:02,843 INFO L85 PathProgramCache]: Analyzing trace with hash 939402225, now seen corresponding path program 5 times [2024-06-28 00:59:02,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:02,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281175779] [2024-06-28 00:59:02,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:02,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:02,928 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 00:59:02,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:02,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281175779] [2024-06-28 00:59:02,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281175779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:02,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:02,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:59:02,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253496076] [2024-06-28 00:59:02,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:02,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:59:02,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:02,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:59:02,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:59:02,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:02,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 72 transitions, 556 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:02,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:02,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:02,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:03,137 INFO L124 PetriNetUnfolderBase]: 384/885 cut-off events. [2024-06-28 00:59:03,137 INFO L125 PetriNetUnfolderBase]: For 5625/5625 co-relation queries the response was YES. [2024-06-28 00:59:03,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2773 conditions, 885 events. 384/885 cut-off events. For 5625/5625 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5728 event pairs, 192 based on Foata normal form. 6/845 useless extension candidates. Maximal degree in co-relation 2729. Up to 470 conditions per place. [2024-06-28 00:59:03,140 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 64 selfloop transitions, 21 changer transitions 0/96 dead transitions. [2024-06-28 00:59:03,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 96 transitions, 832 flow [2024-06-28 00:59:03,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:59:03,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:59:03,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 00:59:03,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6213235294117647 [2024-06-28 00:59:03,142 INFO L175 Difference]: Start difference. First operand has 103 places, 72 transitions, 556 flow. Second operand 8 states and 169 transitions. [2024-06-28 00:59:03,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 96 transitions, 832 flow [2024-06-28 00:59:03,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 96 transitions, 792 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 00:59:03,155 INFO L231 Difference]: Finished difference. Result has 105 places, 72 transitions, 561 flow [2024-06-28 00:59:03,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=561, PETRI_PLACES=105, PETRI_TRANSITIONS=72} [2024-06-28 00:59:03,156 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 69 predicate places. [2024-06-28 00:59:03,156 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 72 transitions, 561 flow [2024-06-28 00:59:03,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:03,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:03,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:03,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:59:03,157 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 00:59:03,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:03,157 INFO L85 PathProgramCache]: Analyzing trace with hash 944912475, now seen corresponding path program 6 times [2024-06-28 00:59:03,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:03,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896120764] [2024-06-28 00:59:03,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:03,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:03,249 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 00:59:03,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896120764] [2024-06-28 00:59:03,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896120764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:03,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:03,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:59:03,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353866716] [2024-06-28 00:59:03,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:03,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:59:03,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:03,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:59:03,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:59:03,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:03,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 72 transitions, 561 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:03,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:03,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:03,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:03,438 INFO L124 PetriNetUnfolderBase]: 374/855 cut-off events. [2024-06-28 00:59:03,439 INFO L125 PetriNetUnfolderBase]: For 4709/4709 co-relation queries the response was YES. [2024-06-28 00:59:03,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2568 conditions, 855 events. 374/855 cut-off events. For 4709/4709 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5540 event pairs, 200 based on Foata normal form. 8/816 useless extension candidates. Maximal degree in co-relation 2523. Up to 604 conditions per place. [2024-06-28 00:59:03,442 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 59 selfloop transitions, 22 changer transitions 0/92 dead transitions. [2024-06-28 00:59:03,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 92 transitions, 775 flow [2024-06-28 00:59:03,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:59:03,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:59:03,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 00:59:03,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5764705882352941 [2024-06-28 00:59:03,444 INFO L175 Difference]: Start difference. First operand has 105 places, 72 transitions, 561 flow. Second operand 10 states and 196 transitions. [2024-06-28 00:59:03,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 92 transitions, 775 flow [2024-06-28 00:59:03,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 92 transitions, 734 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 00:59:03,454 INFO L231 Difference]: Finished difference. Result has 109 places, 72 transitions, 568 flow [2024-06-28 00:59:03,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=568, PETRI_PLACES=109, PETRI_TRANSITIONS=72} [2024-06-28 00:59:03,455 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 73 predicate places. [2024-06-28 00:59:03,455 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 72 transitions, 568 flow [2024-06-28 00:59:03,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:03,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:03,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:03,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:59:03,455 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 00:59:03,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:03,456 INFO L85 PathProgramCache]: Analyzing trace with hash 945127677, now seen corresponding path program 1 times [2024-06-28 00:59:03,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:03,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862836364] [2024-06-28 00:59:03,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:03,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:03,537 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 00:59:03,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:03,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862836364] [2024-06-28 00:59:03,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862836364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:03,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:03,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:59:03,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494893456] [2024-06-28 00:59:03,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:03,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:59:03,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:03,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:59:03,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:59:03,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:03,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 72 transitions, 568 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:03,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:03,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:03,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:03,739 INFO L124 PetriNetUnfolderBase]: 396/929 cut-off events. [2024-06-28 00:59:03,740 INFO L125 PetriNetUnfolderBase]: For 4519/4519 co-relation queries the response was YES. [2024-06-28 00:59:03,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2717 conditions, 929 events. 396/929 cut-off events. For 4519/4519 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6147 event pairs, 208 based on Foata normal form. 6/888 useless extension candidates. Maximal degree in co-relation 2671. Up to 516 conditions per place. [2024-06-28 00:59:03,744 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 63 selfloop transitions, 23 changer transitions 0/97 dead transitions. [2024-06-28 00:59:03,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 97 transitions, 806 flow [2024-06-28 00:59:03,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:59:03,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:59:03,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-28 00:59:03,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2024-06-28 00:59:03,763 INFO L175 Difference]: Start difference. First operand has 109 places, 72 transitions, 568 flow. Second operand 10 states and 200 transitions. [2024-06-28 00:59:03,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 97 transitions, 806 flow [2024-06-28 00:59:03,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 97 transitions, 764 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 00:59:03,775 INFO L231 Difference]: Finished difference. Result has 111 places, 72 transitions, 575 flow [2024-06-28 00:59:03,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=575, PETRI_PLACES=111, PETRI_TRANSITIONS=72} [2024-06-28 00:59:03,775 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 75 predicate places. [2024-06-28 00:59:03,775 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 72 transitions, 575 flow [2024-06-28 00:59:03,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:03,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:03,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:03,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:59:03,776 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 00:59:03,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:03,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1240478095, now seen corresponding path program 7 times [2024-06-28 00:59:03,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:03,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642166846] [2024-06-28 00:59:03,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:03,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:03,872 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 00:59:03,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:03,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642166846] [2024-06-28 00:59:03,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642166846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:03,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:03,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:59:03,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456452880] [2024-06-28 00:59:03,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:03,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:59:03,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:03,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:59:03,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:59:03,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:03,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 72 transitions, 575 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:03,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:03,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:03,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:04,043 INFO L124 PetriNetUnfolderBase]: 428/1022 cut-off events. [2024-06-28 00:59:04,044 INFO L125 PetriNetUnfolderBase]: For 5523/5523 co-relation queries the response was YES. [2024-06-28 00:59:04,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2927 conditions, 1022 events. 428/1022 cut-off events. For 5523/5523 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7040 event pairs, 205 based on Foata normal form. 8/978 useless extension candidates. Maximal degree in co-relation 2880. Up to 681 conditions per place. [2024-06-28 00:59:04,050 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 61 selfloop transitions, 19 changer transitions 0/91 dead transitions. [2024-06-28 00:59:04,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 91 transitions, 787 flow [2024-06-28 00:59:04,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:59:04,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:59:04,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-28 00:59:04,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-06-28 00:59:04,051 INFO L175 Difference]: Start difference. First operand has 111 places, 72 transitions, 575 flow. Second operand 6 states and 134 transitions. [2024-06-28 00:59:04,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 91 transitions, 787 flow [2024-06-28 00:59:04,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 91 transitions, 742 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 00:59:04,063 INFO L231 Difference]: Finished difference. Result has 109 places, 72 transitions, 576 flow [2024-06-28 00:59:04,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=576, PETRI_PLACES=109, PETRI_TRANSITIONS=72} [2024-06-28 00:59:04,064 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 73 predicate places. [2024-06-28 00:59:04,064 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 72 transitions, 576 flow [2024-06-28 00:59:04,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:04,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:04,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:04,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:59:04,064 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 00:59:04,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:04,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1534852639, now seen corresponding path program 8 times [2024-06-28 00:59:04,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:04,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896616728] [2024-06-28 00:59:04,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:04,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:04,149 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 00:59:04,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:04,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896616728] [2024-06-28 00:59:04,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896616728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:04,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:04,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:59:04,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049721068] [2024-06-28 00:59:04,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:04,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:59:04,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:04,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:59:04,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:59:04,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:04,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 72 transitions, 576 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:04,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:04,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:04,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:04,327 INFO L124 PetriNetUnfolderBase]: 460/1057 cut-off events. [2024-06-28 00:59:04,328 INFO L125 PetriNetUnfolderBase]: For 6067/6067 co-relation queries the response was YES. [2024-06-28 00:59:04,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3092 conditions, 1057 events. 460/1057 cut-off events. For 6067/6067 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7438 event pairs, 264 based on Foata normal form. 8/1004 useless extension candidates. Maximal degree in co-relation 3044. Up to 689 conditions per place. [2024-06-28 00:59:04,333 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 51 selfloop transitions, 30 changer transitions 0/92 dead transitions. [2024-06-28 00:59:04,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 92 transitions, 792 flow [2024-06-28 00:59:04,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:59:04,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:59:04,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-28 00:59:04,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302521008403361 [2024-06-28 00:59:04,334 INFO L175 Difference]: Start difference. First operand has 109 places, 72 transitions, 576 flow. Second operand 7 states and 150 transitions. [2024-06-28 00:59:04,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 92 transitions, 792 flow [2024-06-28 00:59:04,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 92 transitions, 756 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 00:59:04,350 INFO L231 Difference]: Finished difference. Result has 111 places, 72 transitions, 606 flow [2024-06-28 00:59:04,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=606, PETRI_PLACES=111, PETRI_TRANSITIONS=72} [2024-06-28 00:59:04,350 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 75 predicate places. [2024-06-28 00:59:04,350 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 72 transitions, 606 flow [2024-06-28 00:59:04,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:04,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:04,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:04,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:59:04,351 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 00:59:04,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:04,351 INFO L85 PathProgramCache]: Analyzing trace with hash 280509659, now seen corresponding path program 9 times [2024-06-28 00:59:04,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:04,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042344745] [2024-06-28 00:59:04,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:04,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:04,439 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 00:59:04,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:04,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042344745] [2024-06-28 00:59:04,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042344745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:04,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:04,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:59:04,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357309068] [2024-06-28 00:59:04,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:04,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:59:04,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:04,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:59:04,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:59:04,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:04,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 72 transitions, 606 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:04,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:04,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:04,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:04,643 INFO L124 PetriNetUnfolderBase]: 492/1134 cut-off events. [2024-06-28 00:59:04,644 INFO L125 PetriNetUnfolderBase]: For 6477/6477 co-relation queries the response was YES. [2024-06-28 00:59:04,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3278 conditions, 1134 events. 492/1134 cut-off events. For 6477/6477 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8080 event pairs, 290 based on Foata normal form. 8/1074 useless extension candidates. Maximal degree in co-relation 3230. Up to 753 conditions per place. [2024-06-28 00:59:04,649 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 51 selfloop transitions, 32 changer transitions 0/94 dead transitions. [2024-06-28 00:59:04,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 94 transitions, 830 flow [2024-06-28 00:59:04,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:59:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:59:04,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-28 00:59:04,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6013071895424836 [2024-06-28 00:59:04,651 INFO L175 Difference]: Start difference. First operand has 111 places, 72 transitions, 606 flow. Second operand 9 states and 184 transitions. [2024-06-28 00:59:04,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 94 transitions, 830 flow [2024-06-28 00:59:04,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 94 transitions, 770 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 00:59:04,667 INFO L231 Difference]: Finished difference. Result has 114 places, 72 transitions, 616 flow [2024-06-28 00:59:04,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=616, PETRI_PLACES=114, PETRI_TRANSITIONS=72} [2024-06-28 00:59:04,667 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 78 predicate places. [2024-06-28 00:59:04,668 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 72 transitions, 616 flow [2024-06-28 00:59:04,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:04,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:04,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:04,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:59:04,668 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 00:59:04,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:04,669 INFO L85 PathProgramCache]: Analyzing trace with hash 274999409, now seen corresponding path program 10 times [2024-06-28 00:59:04,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:04,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918468300] [2024-06-28 00:59:04,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:04,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:04,750 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 00:59:04,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:04,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918468300] [2024-06-28 00:59:04,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918468300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:04,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:04,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:59:04,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589585244] [2024-06-28 00:59:04,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:04,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:59:04,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:04,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:59:04,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:59:04,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:04,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 72 transitions, 616 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:04,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:04,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:04,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:04,940 INFO L124 PetriNetUnfolderBase]: 501/1157 cut-off events. [2024-06-28 00:59:04,940 INFO L125 PetriNetUnfolderBase]: For 5129/5129 co-relation queries the response was YES. [2024-06-28 00:59:04,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3280 conditions, 1157 events. 501/1157 cut-off events. For 5129/5129 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8326 event pairs, 225 based on Foata normal form. 6/1101 useless extension candidates. Maximal degree in co-relation 3232. Up to 416 conditions per place. [2024-06-28 00:59:04,946 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 55 selfloop transitions, 31 changer transitions 0/97 dead transitions. [2024-06-28 00:59:04,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 97 transitions, 856 flow [2024-06-28 00:59:04,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:59:04,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:59:04,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 00:59:04,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-06-28 00:59:04,947 INFO L175 Difference]: Start difference. First operand has 114 places, 72 transitions, 616 flow. Second operand 7 states and 154 transitions. [2024-06-28 00:59:04,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 97 transitions, 856 flow [2024-06-28 00:59:04,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 97 transitions, 792 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 00:59:04,965 INFO L231 Difference]: Finished difference. Result has 113 places, 72 transitions, 618 flow [2024-06-28 00:59:04,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=618, PETRI_PLACES=113, PETRI_TRANSITIONS=72} [2024-06-28 00:59:04,965 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 77 predicate places. [2024-06-28 00:59:04,965 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 72 transitions, 618 flow [2024-06-28 00:59:04,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:04,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:04,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:04,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:59:04,966 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 00:59:04,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:04,966 INFO L85 PathProgramCache]: Analyzing trace with hash 474664271, now seen corresponding path program 2 times [2024-06-28 00:59:04,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:04,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803266747] [2024-06-28 00:59:04,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:04,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:05,050 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 00:59:05,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:05,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803266747] [2024-06-28 00:59:05,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803266747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:05,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:05,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:59:05,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721446551] [2024-06-28 00:59:05,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:05,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:59:05,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:05,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:59:05,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:59:05,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:05,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 72 transitions, 618 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:05,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:05,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:05,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:05,271 INFO L124 PetriNetUnfolderBase]: 523/1211 cut-off events. [2024-06-28 00:59:05,271 INFO L125 PetriNetUnfolderBase]: For 5335/5335 co-relation queries the response was YES. [2024-06-28 00:59:05,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3420 conditions, 1211 events. 523/1211 cut-off events. For 5335/5335 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8844 event pairs, 249 based on Foata normal form. 6/1152 useless extension candidates. Maximal degree in co-relation 3372. Up to 812 conditions per place. [2024-06-28 00:59:05,278 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 65 selfloop transitions, 17 changer transitions 0/93 dead transitions. [2024-06-28 00:59:05,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 93 transitions, 840 flow [2024-06-28 00:59:05,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:59:05,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:59:05,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-28 00:59:05,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-06-28 00:59:05,279 INFO L175 Difference]: Start difference. First operand has 113 places, 72 transitions, 618 flow. Second operand 6 states and 134 transitions. [2024-06-28 00:59:05,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 93 transitions, 840 flow [2024-06-28 00:59:05,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 93 transitions, 777 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 00:59:05,297 INFO L231 Difference]: Finished difference. Result has 113 places, 72 transitions, 592 flow [2024-06-28 00:59:05,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=592, PETRI_PLACES=113, PETRI_TRANSITIONS=72} [2024-06-28 00:59:05,297 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 77 predicate places. [2024-06-28 00:59:05,297 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 72 transitions, 592 flow [2024-06-28 00:59:05,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:05,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:05,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:05,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:59:05,298 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 00:59:05,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:05,298 INFO L85 PathProgramCache]: Analyzing trace with hash 280724861, now seen corresponding path program 3 times [2024-06-28 00:59:05,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:05,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950269627] [2024-06-28 00:59:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:05,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:05,384 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 00:59:05,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:05,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950269627] [2024-06-28 00:59:05,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950269627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:05,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:05,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:59:05,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657274543] [2024-06-28 00:59:05,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:05,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:59:05,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:05,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:59:05,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:59:05,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:05,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 72 transitions, 592 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:05,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:05,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:05,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:05,606 INFO L124 PetriNetUnfolderBase]: 545/1265 cut-off events. [2024-06-28 00:59:05,606 INFO L125 PetriNetUnfolderBase]: For 5255/5255 co-relation queries the response was YES. [2024-06-28 00:59:05,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3521 conditions, 1265 events. 545/1265 cut-off events. For 5255/5255 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 9391 event pairs, 305 based on Foata normal form. 6/1204 useless extension candidates. Maximal degree in co-relation 3473. Up to 600 conditions per place. [2024-06-28 00:59:05,612 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 54 selfloop transitions, 34 changer transitions 0/99 dead transitions. [2024-06-28 00:59:05,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 99 transitions, 840 flow [2024-06-28 00:59:05,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:59:05,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:59:05,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-28 00:59:05,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6143790849673203 [2024-06-28 00:59:05,614 INFO L175 Difference]: Start difference. First operand has 113 places, 72 transitions, 592 flow. Second operand 9 states and 188 transitions. [2024-06-28 00:59:05,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 99 transitions, 840 flow [2024-06-28 00:59:05,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 99 transitions, 807 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 00:59:05,630 INFO L231 Difference]: Finished difference. Result has 118 places, 72 transitions, 631 flow [2024-06-28 00:59:05,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=631, PETRI_PLACES=118, PETRI_TRANSITIONS=72} [2024-06-28 00:59:05,630 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 82 predicate places. [2024-06-28 00:59:05,631 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 72 transitions, 631 flow [2024-06-28 00:59:05,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:05,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:05,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:05,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:59:05,631 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 00:59:05,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:05,632 INFO L85 PathProgramCache]: Analyzing trace with hash 482073581, now seen corresponding path program 4 times [2024-06-28 00:59:05,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:05,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982574539] [2024-06-28 00:59:05,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:05,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:05,715 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 00:59:05,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:05,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982574539] [2024-06-28 00:59:05,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982574539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:05,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:05,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:59:05,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732359316] [2024-06-28 00:59:05,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:05,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:59:05,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:05,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:59:05,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:59:05,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 00:59:05,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 72 transitions, 631 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:05,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:05,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 00:59:05,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:05,924 INFO L124 PetriNetUnfolderBase]: 538/1300 cut-off events. [2024-06-28 00:59:05,924 INFO L125 PetriNetUnfolderBase]: For 3481/3481 co-relation queries the response was YES. [2024-06-28 00:59:05,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3423 conditions, 1300 events. 538/1300 cut-off events. For 3481/3481 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9691 event pairs, 278 based on Foata normal form. 6/1242 useless extension candidates. Maximal degree in co-relation 3374. Up to 761 conditions per place. [2024-06-28 00:59:05,930 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 67 selfloop transitions, 18 changer transitions 0/96 dead transitions. [2024-06-28 00:59:05,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 96 transitions, 811 flow [2024-06-28 00:59:05,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:59:05,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:59:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-28 00:59:05,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6386554621848739 [2024-06-28 00:59:05,948 INFO L175 Difference]: Start difference. First operand has 118 places, 72 transitions, 631 flow. Second operand 7 states and 152 transitions. [2024-06-28 00:59:05,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 96 transitions, 811 flow [2024-06-28 00:59:05,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 96 transitions, 634 flow, removed 5 selfloop flow, removed 33 redundant places. [2024-06-28 00:59:05,954 INFO L231 Difference]: Finished difference. Result has 90 places, 71 transitions, 440 flow [2024-06-28 00:59:05,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=440, PETRI_PLACES=90, PETRI_TRANSITIONS=71} [2024-06-28 00:59:05,954 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 54 predicate places. [2024-06-28 00:59:05,954 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 71 transitions, 440 flow [2024-06-28 00:59:05,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 00:59:05,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:05,955 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 00:59:05,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:59:05,955 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 00:59:05,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:05,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1028860069, now seen corresponding path program 1 times [2024-06-28 00:59:05,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:05,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289772718] [2024-06-28 00:59:05,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:05,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:06,006 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 00:59:06,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:06,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289772718] [2024-06-28 00:59:06,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289772718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:06,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:06,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:59:06,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921791944] [2024-06-28 00:59:06,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:06,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:59:06,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:06,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:59:06,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:59:06,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 34 [2024-06-28 00:59:06,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 71 transitions, 440 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:06,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:06,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 34 [2024-06-28 00:59:06,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:06,094 INFO L124 PetriNetUnfolderBase]: 410/1172 cut-off events. [2024-06-28 00:59:06,094 INFO L125 PetriNetUnfolderBase]: For 388/389 co-relation queries the response was YES. [2024-06-28 00:59:06,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2502 conditions, 1172 events. 410/1172 cut-off events. For 388/389 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 8588 event pairs, 20 based on Foata normal form. 97/1224 useless extension candidates. Maximal degree in co-relation 2479. Up to 344 conditions per place. [2024-06-28 00:59:06,098 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 18 selfloop transitions, 24 changer transitions 1/81 dead transitions. [2024-06-28 00:59:06,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 81 transitions, 549 flow [2024-06-28 00:59:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:59:06,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:59:06,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-28 00:59:06,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7176470588235294 [2024-06-28 00:59:06,099 INFO L175 Difference]: Start difference. First operand has 90 places, 71 transitions, 440 flow. Second operand 5 states and 122 transitions. [2024-06-28 00:59:06,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 81 transitions, 549 flow [2024-06-28 00:59:06,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 81 transitions, 512 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 00:59:06,101 INFO L231 Difference]: Finished difference. Result has 91 places, 71 transitions, 480 flow [2024-06-28 00:59:06,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=480, PETRI_PLACES=91, PETRI_TRANSITIONS=71} [2024-06-28 00:59:06,101 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 55 predicate places. [2024-06-28 00:59:06,102 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 71 transitions, 480 flow [2024-06-28 00:59:06,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:06,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:06,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:06,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:59:06,102 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 00:59:06,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:06,103 INFO L85 PathProgramCache]: Analyzing trace with hash -974379961, now seen corresponding path program 1 times [2024-06-28 00:59:06,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:06,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178291873] [2024-06-28 00:59:06,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:06,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:06,185 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 00:59:06,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:06,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178291873] [2024-06-28 00:59:06,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178291873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:06,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:06,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:59:06,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351410801] [2024-06-28 00:59:06,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:06,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:59:06,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:06,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:59:06,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:59:06,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 34 [2024-06-28 00:59:06,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 71 transitions, 480 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:06,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:06,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 34 [2024-06-28 00:59:06,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:06,289 INFO L124 PetriNetUnfolderBase]: 303/849 cut-off events. [2024-06-28 00:59:06,289 INFO L125 PetriNetUnfolderBase]: For 561/561 co-relation queries the response was YES. [2024-06-28 00:59:06,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2205 conditions, 849 events. 303/849 cut-off events. For 561/561 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5703 event pairs, 96 based on Foata normal form. 44/813 useless extension candidates. Maximal degree in co-relation 2180. Up to 259 conditions per place. [2024-06-28 00:59:06,291 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 15 selfloop transitions, 2 changer transitions 50/86 dead transitions. [2024-06-28 00:59:06,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 86 transitions, 598 flow [2024-06-28 00:59:06,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:59:06,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:59:06,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 00:59:06,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6813725490196079 [2024-06-28 00:59:06,292 INFO L175 Difference]: Start difference. First operand has 91 places, 71 transitions, 480 flow. Second operand 6 states and 139 transitions. [2024-06-28 00:59:06,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 86 transitions, 598 flow [2024-06-28 00:59:06,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 86 transitions, 496 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:59:06,296 INFO L231 Difference]: Finished difference. Result has 93 places, 34 transitions, 128 flow [2024-06-28 00:59:06,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=128, PETRI_PLACES=93, PETRI_TRANSITIONS=34} [2024-06-28 00:59:06,296 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 57 predicate places. [2024-06-28 00:59:06,296 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 34 transitions, 128 flow [2024-06-28 00:59:06,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:06,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:06,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:06,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:59:06,297 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 00:59:06,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:06,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1773270463, now seen corresponding path program 2 times [2024-06-28 00:59:06,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:06,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506638040] [2024-06-28 00:59:06,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:06,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:06,362 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 00:59:06,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:06,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506638040] [2024-06-28 00:59:06,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506638040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:06,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:06,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:59:06,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064897531] [2024-06-28 00:59:06,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:06,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:59:06,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:06,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:59:06,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:59:06,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 34 [2024-06-28 00:59:06,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 34 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:06,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:06,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 34 [2024-06-28 00:59:06,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:06,430 INFO L124 PetriNetUnfolderBase]: 64/185 cut-off events. [2024-06-28 00:59:06,431 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-06-28 00:59:06,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416 conditions, 185 events. 64/185 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 731 event pairs, 13 based on Foata normal form. 12/177 useless extension candidates. Maximal degree in co-relation 402. Up to 73 conditions per place. [2024-06-28 00:59:06,431 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2024-06-28 00:59:06,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 38 transitions, 176 flow [2024-06-28 00:59:06,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:59:06,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:59:06,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-28 00:59:06,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2024-06-28 00:59:06,432 INFO L175 Difference]: Start difference. First operand has 93 places, 34 transitions, 128 flow. Second operand 6 states and 128 transitions. [2024-06-28 00:59:06,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 38 transitions, 176 flow [2024-06-28 00:59:06,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 38 transitions, 151 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:59:06,433 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2024-06-28 00:59:06,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2024-06-28 00:59:06,434 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2024-06-28 00:59:06,434 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2024-06-28 00:59:06,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:06,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-06-28 00:59:06,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-06-28 00:59:06,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-06-28 00:59:06,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-06-28 00:59:06,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-06-28 00:59:06,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:59:06,439 INFO L445 BasicCegarLoop]: Path program histogram: [10, 6, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:06,443 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 00:59:06,443 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 00:59:06,445 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 00:59:06,446 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 00:59:06,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 12:59:06 BasicIcfg [2024-06-28 00:59:06,447 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 00:59:06,447 INFO L158 Benchmark]: Toolchain (without parser) took 11733.54ms. Allocated memory was 186.6MB in the beginning and 492.8MB in the end (delta: 306.2MB). Free memory was 125.7MB in the beginning and 273.4MB in the end (delta: -147.7MB). Peak memory consumption was 158.8MB. Max. memory is 16.1GB. [2024-06-28 00:59:06,447 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 119.5MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:59:06,447 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 119.5MB. Free memory is still 90.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:59:06,448 INFO L158 Benchmark]: CACSL2BoogieTranslator took 463.61ms. Allocated memory is still 186.6MB. Free memory was 125.5MB in the beginning and 99.1MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-28 00:59:06,448 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.63ms. Allocated memory is still 186.6MB. Free memory was 99.1MB in the beginning and 155.2MB in the end (delta: -56.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2024-06-28 00:59:06,448 INFO L158 Benchmark]: Boogie Preprocessor took 60.95ms. Allocated memory is still 186.6MB. Free memory was 155.2MB in the beginning and 153.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 00:59:06,448 INFO L158 Benchmark]: RCFGBuilder took 396.75ms. Allocated memory is still 186.6MB. Free memory was 153.1MB in the beginning and 132.4MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-28 00:59:06,449 INFO L158 Benchmark]: TraceAbstraction took 10744.22ms. Allocated memory was 186.6MB in the beginning and 492.8MB in the end (delta: 306.2MB). Free memory was 132.4MB in the beginning and 273.4MB in the end (delta: -141.0MB). Peak memory consumption was 164.9MB. Max. memory is 16.1GB. [2024-06-28 00:59:06,452 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 0.16ms. Allocated memory is still 119.5MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 119.5MB. Free memory is still 90.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 463.61ms. Allocated memory is still 186.6MB. Free memory was 125.5MB in the beginning and 99.1MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.63ms. Allocated memory is still 186.6MB. Free memory was 99.1MB in the beginning and 155.2MB in the end (delta: -56.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.95ms. Allocated memory is still 186.6MB. Free memory was 155.2MB in the beginning and 153.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 396.75ms. Allocated memory is still 186.6MB. Free memory was 153.1MB in the beginning and 132.4MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 10744.22ms. Allocated memory was 186.6MB in the beginning and 492.8MB in the end (delta: 306.2MB). Free memory was 132.4MB in the beginning and 273.4MB in the end (delta: -141.0MB). Peak memory consumption was 164.9MB. 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, 50 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: 10.7s, OverallIterations: 43, TraceHistogramMax: 1, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2291 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1850 mSDsluCounter, 399 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 246 mSDsCounter, 223 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7510 IncrementalHoareTripleChecker+Invalid, 7733 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 223 mSolverCounterUnsat, 153 mSDtfsCounter, 7510 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=631occurred in iteration=39, InterpolantAutomatonStates: 279, 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, 0.1s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 634 NumberOfCodeBlocks, 634 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 591 ConstructedInterpolants, 0 QuantifiedInterpolants, 5251 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 43 InterpolantComputations, 43 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 00:59:06,480 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