./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe002_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-rel/safe002_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/safe002_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe002_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 [2024-06-27 21:49:37,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 21:49:37,811 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 21:49:37,817 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 21:49:37,817 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 21:49:37,846 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 21:49:37,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 21:49:37,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 21:49:37,848 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 21:49:37,852 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 21:49:37,852 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 21:49:37,852 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 21:49:37,853 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 21:49:37,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 21:49:37,855 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 21:49:37,855 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 21:49:37,856 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 21:49:37,856 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 21:49:37,856 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 21:49:37,856 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 21:49:37,857 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 21:49:37,857 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 21:49:37,857 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 21:49:37,858 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 21:49:37,858 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 21:49:37,858 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 21:49:37,858 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 21:49:37,859 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 21:49:37,859 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 21:49:37,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 21:49:37,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 21:49:37,861 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 21:49:37,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:49:37,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 21:49:37,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 21:49:37,862 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 21:49:37,862 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 21:49:37,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 21:49:37,862 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 21:49:37,862 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 21:49:37,863 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 21:49:37,863 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 21:49:37,863 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 21:49:37,863 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 21:49:38,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 21:49:38,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 21:49:38,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 21:49:38,132 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 21:49:38,133 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 21:49:38,134 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe002_tso.yml/witness.yml [2024-06-27 21:49:38,240 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 21:49:38,244 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 21:49:38,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2024-06-27 21:49:39,439 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 21:49:39,702 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 21:49:39,703 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2024-06-27 21:49:39,722 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/616610b5b/a79b1e5776d142efa767c47e636c03b7/FLAG1d0636c4a [2024-06-27 21:49:39,737 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/616610b5b/a79b1e5776d142efa767c47e636c03b7 [2024-06-27 21:49:39,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 21:49:39,739 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 21:49:39,742 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 21:49:39,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 21:49:39,748 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 21:49:39,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:49:38" (1/2) ... [2024-06-27 21:49:39,750 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59bc51b4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:49:39, skipping insertion in model container [2024-06-27 21:49:39,751 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:49:38" (1/2) ... [2024-06-27 21:49:39,754 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@61aba048 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:49:39, skipping insertion in model container [2024-06-27 21:49:39,754 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:49:39" (2/2) ... [2024-06-27 21:49:39,755 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59bc51b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:49:39, skipping insertion in model container [2024-06-27 21:49:39,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:49:39" (2/2) ... [2024-06-27 21:49:39,756 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 21:49:39,786 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 21:49:39,787 INFO L97 edCorrectnessWitness]: Location invariant before [L781-L781] ! multithreaded || (0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL [2024-06-27 21:49:39,787 INFO L97 edCorrectnessWitness]: Location invariant before [L783-L783] ! multithreaded || (0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL [2024-06-27 21:49:39,787 INFO L97 edCorrectnessWitness]: Location invariant before [L784-L784] ! multithreaded || (0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL [2024-06-27 21:49:39,787 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 21:49:39,787 INFO L106 edCorrectnessWitness]: ghost_update [L779-L779] multithreaded = 1; [2024-06-27 21:49:39,836 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 21:49:39,990 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/safe002_tso.i[945,958] [2024-06-27 21:49:40,107 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:49:40,118 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 21:49:40,159 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/safe002_tso.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 21:49:40,229 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:49:40,275 INFO L206 MainTranslator]: Completed translation [2024-06-27 21:49:40,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:49:40 WrapperNode [2024-06-27 21:49:40,276 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 21:49:40,277 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 21:49:40,277 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 21:49:40,277 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 21:49:40,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:49:40" (1/1) ... [2024-06-27 21:49:40,296 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:49:40" (1/1) ... [2024-06-27 21:49:40,321 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-06-27 21:49:40,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 21:49:40,324 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 21:49:40,324 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 21:49:40,324 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 21:49:40,332 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:49:40" (1/1) ... [2024-06-27 21:49:40,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:49:40" (1/1) ... [2024-06-27 21:49:40,335 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:49:40" (1/1) ... [2024-06-27 21:49:40,350 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]. [2024-06-27 21:49:40,351 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:49:40" (1/1) ... [2024-06-27 21:49:40,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:49:40" (1/1) ... [2024-06-27 21:49:40,355 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:49:40" (1/1) ... [2024-06-27 21:49:40,356 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:49:40" (1/1) ... [2024-06-27 21:49:40,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:49:40" (1/1) ... [2024-06-27 21:49:40,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:49:40" (1/1) ... [2024-06-27 21:49:40,361 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 21:49:40,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 21:49:40,362 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 21:49:40,362 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 21:49:40,363 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:49:40" (1/1) ... [2024-06-27 21:49:40,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:49:40,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:49:40,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 21:49:40,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 21:49:40,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 21:49:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 21:49:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 21:49:40,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 21:49:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 21:49:40,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 21:49:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 21:49:40,419 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 21:49:40,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 21:49:40,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 21:49:40,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 21:49:40,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 21:49:40,420 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 21:49:40,532 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 21:49:40,535 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 21:49:40,655 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 21:49:40,656 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 21:49:40,730 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 21:49:40,730 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 21:49:40,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:49:40 BoogieIcfgContainer [2024-06-27 21:49:40,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 21:49:40,733 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 21:49:40,733 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 21:49:40,736 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 21:49:40,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:49:38" (1/4) ... [2024-06-27 21:49:40,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f265c16 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:49:40, skipping insertion in model container [2024-06-27 21:49:40,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 09:49:39" (2/4) ... [2024-06-27 21:49:40,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f265c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:49:40, skipping insertion in model container [2024-06-27 21:49:40,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:49:40" (3/4) ... [2024-06-27 21:49:40,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f265c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:49:40, skipping insertion in model container [2024-06-27 21:49:40,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:49:40" (4/4) ... [2024-06-27 21:49:40,739 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_tso.i [2024-06-27 21:49:40,756 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 21:49:40,757 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 21:49:40,757 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 21:49:40,813 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 21:49:40,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 45 transitions, 102 flow [2024-06-27 21:49:40,895 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2024-06-27 21:49:40,895 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:49:40,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 42 events. 1/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-06-27 21:49:40,912 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 45 transitions, 102 flow [2024-06-27 21:49:40,915 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 39 transitions, 87 flow [2024-06-27 21:49:40,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 21:49:40,929 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;@60ef5745, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 21:49:40,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 21:49:40,934 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 21:49:40,935 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 21:49:40,937 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:49:40,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:49:40,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 21:49:40,939 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:49:40,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:49:40,943 INFO L85 PathProgramCache]: Analyzing trace with hash 210327718, now seen corresponding path program 1 times [2024-06-27 21:49:40,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:49:40,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107241852] [2024-06-27 21:49:40,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:49:40,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:49:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:49:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:49:41,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:49:41,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107241852] [2024-06-27 21:49:41,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107241852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:49:41,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:49:41,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 21:49:41,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142807186] [2024-06-27 21:49:41,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:49:41,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:49:41,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:49:41,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:49:41,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:49:41,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 45 [2024-06-27 21:49:41,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:41,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:49:41,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 45 [2024-06-27 21:49:41,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:49:41,522 INFO L124 PetriNetUnfolderBase]: 109/290 cut-off events. [2024-06-27 21:49:41,523 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 21:49:41,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 290 events. 109/290 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1568 event pairs, 49 based on Foata normal form. 4/272 useless extension candidates. Maximal degree in co-relation 495. Up to 147 conditions per place. [2024-06-27 21:49:41,529 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 23 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2024-06-27 21:49:41,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 154 flow [2024-06-27 21:49:41,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:49:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:49:41,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-06-27 21:49:41,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.762962962962963 [2024-06-27 21:49:41,544 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 87 flow. Second operand 3 states and 103 transitions. [2024-06-27 21:49:41,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 154 flow [2024-06-27 21:49:41,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 150 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 21:49:41,553 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 92 flow [2024-06-27 21:49:41,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-06-27 21:49:41,558 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -1 predicate places. [2024-06-27 21:49:41,559 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 92 flow [2024-06-27 21:49:41,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:41,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:49:41,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:49:41,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 21:49:41,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:49:41,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:49:41,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1265517149, now seen corresponding path program 1 times [2024-06-27 21:49:41,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:49:41,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739961188] [2024-06-27 21:49:41,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:49:41,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:49:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:49:41,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:49:41,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:49:41,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739961188] [2024-06-27 21:49:41,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739961188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:49:41,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:49:41,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 21:49:41,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049123984] [2024-06-27 21:49:41,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:49:41,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:49:41,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:49:41,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:49:41,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:49:41,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 45 [2024-06-27 21:49:41,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:41,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:49:41,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 45 [2024-06-27 21:49:41,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:49:41,817 INFO L124 PetriNetUnfolderBase]: 173/422 cut-off events. [2024-06-27 21:49:41,818 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-06-27 21:49:41,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 422 events. 173/422 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2379 event pairs, 61 based on Foata normal form. 6/415 useless extension candidates. Maximal degree in co-relation 813. Up to 229 conditions per place. [2024-06-27 21:49:41,826 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 34 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-06-27 21:49:41,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 58 transitions, 217 flow [2024-06-27 21:49:41,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:49:41,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:49:41,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-06-27 21:49:41,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7555555555555555 [2024-06-27 21:49:41,833 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 92 flow. Second operand 4 states and 136 transitions. [2024-06-27 21:49:41,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 58 transitions, 217 flow [2024-06-27 21:49:41,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 211 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 21:49:41,836 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 112 flow [2024-06-27 21:49:41,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-06-27 21:49:41,838 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2024-06-27 21:49:41,838 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 112 flow [2024-06-27 21:49:41,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:41,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:49:41,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:49:41,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 21:49:41,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:49:41,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:49:41,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1525065302, now seen corresponding path program 1 times [2024-06-27 21:49:41,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:49:41,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559837446] [2024-06-27 21:49:41,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:49:41,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:49:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:49:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:49:41,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:49:41,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559837446] [2024-06-27 21:49:41,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559837446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:49:41,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:49:41,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:49:41,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857458193] [2024-06-27 21:49:41,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:49:41,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:49:41,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:49:41,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:49:41,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:49:41,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 45 [2024-06-27 21:49:41,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:41,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:49:41,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 45 [2024-06-27 21:49:41,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:49:42,123 INFO L124 PetriNetUnfolderBase]: 225/570 cut-off events. [2024-06-27 21:49:42,123 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-06-27 21:49:42,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1174 conditions, 570 events. 225/570 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3601 event pairs, 58 based on Foata normal form. 12/564 useless extension candidates. Maximal degree in co-relation 1160. Up to 166 conditions per place. [2024-06-27 21:49:42,129 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 33 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-06-27 21:49:42,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 224 flow [2024-06-27 21:49:42,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:49:42,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:49:42,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-06-27 21:49:42,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2024-06-27 21:49:42,131 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 112 flow. Second operand 4 states and 134 transitions. [2024-06-27 21:49:42,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 224 flow [2024-06-27 21:49:42,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 21:49:42,134 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 124 flow [2024-06-27 21:49:42,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2024-06-27 21:49:42,135 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 5 predicate places. [2024-06-27 21:49:42,135 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 124 flow [2024-06-27 21:49:42,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:42,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:49:42,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:49:42,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 21:49:42,136 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:49:42,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:49:42,137 INFO L85 PathProgramCache]: Analyzing trace with hash 202685374, now seen corresponding path program 2 times [2024-06-27 21:49:42,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:49:42,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172466799] [2024-06-27 21:49:42,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:49:42,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:49:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:49:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:49:42,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:49:42,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172466799] [2024-06-27 21:49:42,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172466799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:49:42,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:49:42,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:49:42,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048066199] [2024-06-27 21:49:42,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:49:42,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:49:42,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:49:42,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:49:42,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:49:42,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 45 [2024-06-27 21:49:42,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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) [2024-06-27 21:49:42,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:49:42,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 45 [2024-06-27 21:49:42,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:49:42,341 INFO L124 PetriNetUnfolderBase]: 209/564 cut-off events. [2024-06-27 21:49:42,342 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-06-27 21:49:42,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1159 conditions, 564 events. 209/564 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3652 event pairs, 35 based on Foata normal form. 12/561 useless extension candidates. Maximal degree in co-relation 1143. Up to 166 conditions per place. [2024-06-27 21:49:42,346 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 32 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2024-06-27 21:49:42,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 55 transitions, 216 flow [2024-06-27 21:49:42,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:49:42,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:49:42,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-06-27 21:49:42,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-06-27 21:49:42,349 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 124 flow. Second operand 4 states and 132 transitions. [2024-06-27 21:49:42,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 55 transitions, 216 flow [2024-06-27 21:49:42,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 200 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 21:49:42,351 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 98 flow [2024-06-27 21:49:42,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-06-27 21:49:42,352 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2024-06-27 21:49:42,352 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 98 flow [2024-06-27 21:49:42,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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) [2024-06-27 21:49:42,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:49:42,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:49:42,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 21:49:42,353 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:49:42,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:49:42,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1220229186, now seen corresponding path program 1 times [2024-06-27 21:49:42,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:49:42,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129584642] [2024-06-27 21:49:42,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:49:42,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:49:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:49:42,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:49:42,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:49:42,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129584642] [2024-06-27 21:49:42,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129584642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:49:42,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:49:42,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:49:42,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332909874] [2024-06-27 21:49:42,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:49:42,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:49:42,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:49:42,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:49:42,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:49:42,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-06-27 21:49:42,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:42,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:49:42,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-06-27 21:49:42,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:49:42,994 INFO L124 PetriNetUnfolderBase]: 1710/3363 cut-off events. [2024-06-27 21:49:42,995 INFO L125 PetriNetUnfolderBase]: For 545/548 co-relation queries the response was YES. [2024-06-27 21:49:43,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6369 conditions, 3363 events. 1710/3363 cut-off events. For 545/548 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 25680 event pairs, 552 based on Foata normal form. 114/3401 useless extension candidates. Maximal degree in co-relation 6357. Up to 1125 conditions per place. [2024-06-27 21:49:43,016 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 34 selfloop transitions, 7 changer transitions 39/96 dead transitions. [2024-06-27 21:49:43,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 96 transitions, 403 flow [2024-06-27 21:49:43,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:49:43,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:49:43,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-06-27 21:49:43,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.707936507936508 [2024-06-27 21:49:43,020 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 98 flow. Second operand 7 states and 223 transitions. [2024-06-27 21:49:43,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 96 transitions, 403 flow [2024-06-27 21:49:43,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 96 transitions, 393 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 21:49:43,027 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 183 flow [2024-06-27 21:49:43,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=183, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2024-06-27 21:49:43,031 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2024-06-27 21:49:43,031 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 183 flow [2024-06-27 21:49:43,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:43,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:49:43,032 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] [2024-06-27 21:49:43,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 21:49:43,032 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:49:43,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:49:43,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1065579519, now seen corresponding path program 1 times [2024-06-27 21:49:43,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:49:43,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38007564] [2024-06-27 21:49:43,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:49:43,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:49:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:49:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:49:43,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:49:43,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38007564] [2024-06-27 21:49:43,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38007564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:49:43,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:49:43,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:49:43,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777232949] [2024-06-27 21:49:43,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:49:43,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:49:43,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:49:43,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:49:43,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:49:43,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-06-27 21:49:43,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:43,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:49:43,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-06-27 21:49:43,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:49:43,683 INFO L124 PetriNetUnfolderBase]: 1397/2905 cut-off events. [2024-06-27 21:49:43,684 INFO L125 PetriNetUnfolderBase]: For 3418/3430 co-relation queries the response was YES. [2024-06-27 21:49:43,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7851 conditions, 2905 events. 1397/2905 cut-off events. For 3418/3430 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 22325 event pairs, 144 based on Foata normal form. 96/2972 useless extension candidates. Maximal degree in co-relation 7832. Up to 913 conditions per place. [2024-06-27 21:49:43,707 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 43 selfloop transitions, 10 changer transitions 52/121 dead transitions. [2024-06-27 21:49:43,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 121 transitions, 819 flow [2024-06-27 21:49:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 21:49:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 21:49:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 299 transitions. [2024-06-27 21:49:43,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6644444444444444 [2024-06-27 21:49:43,709 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 183 flow. Second operand 10 states and 299 transitions. [2024-06-27 21:49:43,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 121 transitions, 819 flow [2024-06-27 21:49:43,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 121 transitions, 759 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 21:49:43,720 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 273 flow [2024-06-27 21:49:43,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=273, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2024-06-27 21:49:43,721 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 22 predicate places. [2024-06-27 21:49:43,721 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 273 flow [2024-06-27 21:49:43,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:43,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:49:43,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:49:43,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 21:49:43,722 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:49:43,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:49:43,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1978847409, now seen corresponding path program 1 times [2024-06-27 21:49:43,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:49:43,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83566137] [2024-06-27 21:49:43,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:49:43,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:49:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:49:43,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:49:43,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:49:43,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83566137] [2024-06-27 21:49:43,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83566137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:49:43,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:49:43,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:49:43,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351849589] [2024-06-27 21:49:43,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:49:43,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:49:43,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:49:43,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:49:43,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:49:43,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-06-27 21:49:43,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 273 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:43,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:49:43,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-06-27 21:49:43,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:49:44,255 INFO L124 PetriNetUnfolderBase]: 1193/2425 cut-off events. [2024-06-27 21:49:44,256 INFO L125 PetriNetUnfolderBase]: For 6415/6449 co-relation queries the response was YES. [2024-06-27 21:49:44,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7728 conditions, 2425 events. 1193/2425 cut-off events. For 6415/6449 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 17653 event pairs, 297 based on Foata normal form. 57/2463 useless extension candidates. Maximal degree in co-relation 7700. Up to 918 conditions per place. [2024-06-27 21:49:44,278 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 46 selfloop transitions, 13 changer transitions 34/109 dead transitions. [2024-06-27 21:49:44,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 109 transitions, 767 flow [2024-06-27 21:49:44,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 21:49:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 21:49:44,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 291 transitions. [2024-06-27 21:49:44,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6466666666666666 [2024-06-27 21:49:44,280 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 273 flow. Second operand 10 states and 291 transitions. [2024-06-27 21:49:44,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 109 transitions, 767 flow [2024-06-27 21:49:44,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 109 transitions, 701 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-06-27 21:49:44,321 INFO L231 Difference]: Finished difference. Result has 81 places, 53 transitions, 351 flow [2024-06-27 21:49:44,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=351, PETRI_PLACES=81, PETRI_TRANSITIONS=53} [2024-06-27 21:49:44,323 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 32 predicate places. [2024-06-27 21:49:44,323 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 53 transitions, 351 flow [2024-06-27 21:49:44,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:44,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:49:44,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:49:44,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 21:49:44,324 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:49:44,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:49:44,325 INFO L85 PathProgramCache]: Analyzing trace with hash 699224208, now seen corresponding path program 1 times [2024-06-27 21:49:44,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:49:44,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266060427] [2024-06-27 21:49:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:49:44,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:49:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:49:44,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:49:44,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:49:44,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266060427] [2024-06-27 21:49:44,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266060427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:49:44,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:49:44,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:49:44,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008152239] [2024-06-27 21:49:44,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:49:44,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:49:44,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:49:44,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:49:44,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:49:44,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-06-27 21:49:44,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 53 transitions, 351 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:44,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:49:44,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-06-27 21:49:44,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:49:44,976 INFO L124 PetriNetUnfolderBase]: 1477/3063 cut-off events. [2024-06-27 21:49:44,976 INFO L125 PetriNetUnfolderBase]: For 9064/9086 co-relation queries the response was YES. [2024-06-27 21:49:44,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10002 conditions, 3063 events. 1477/3063 cut-off events. For 9064/9086 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 24237 event pairs, 383 based on Foata normal form. 71/3072 useless extension candidates. Maximal degree in co-relation 9965. Up to 868 conditions per place. [2024-06-27 21:49:44,999 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 41 selfloop transitions, 9 changer transitions 40/106 dead transitions. [2024-06-27 21:49:44,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 106 transitions, 891 flow [2024-06-27 21:49:45,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:49:45,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:49:45,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-06-27 21:49:45,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2024-06-27 21:49:45,001 INFO L175 Difference]: Start difference. First operand has 81 places, 53 transitions, 351 flow. Second operand 7 states and 217 transitions. [2024-06-27 21:49:45,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 106 transitions, 891 flow [2024-06-27 21:49:45,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 106 transitions, 835 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-27 21:49:45,037 INFO L231 Difference]: Finished difference. Result has 73 places, 46 transitions, 268 flow [2024-06-27 21:49:45,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=268, PETRI_PLACES=73, PETRI_TRANSITIONS=46} [2024-06-27 21:49:45,040 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 24 predicate places. [2024-06-27 21:49:45,040 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 46 transitions, 268 flow [2024-06-27 21:49:45,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:45,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:49:45,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:49:45,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 21:49:45,041 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:49:45,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:49:45,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1347868536, now seen corresponding path program 1 times [2024-06-27 21:49:45,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:49:45,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10712158] [2024-06-27 21:49:45,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:49:45,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:49:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:49:45,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:49:45,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:49:45,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10712158] [2024-06-27 21:49:45,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10712158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:49:45,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:49:45,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:49:45,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700457886] [2024-06-27 21:49:45,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:49:45,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:49:45,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:49:45,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:49:45,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:49:45,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 45 [2024-06-27 21:49:45,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 46 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:45,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:49:45,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 45 [2024-06-27 21:49:45,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:49:45,331 INFO L124 PetriNetUnfolderBase]: 451/1038 cut-off events. [2024-06-27 21:49:45,332 INFO L125 PetriNetUnfolderBase]: For 2000/2044 co-relation queries the response was YES. [2024-06-27 21:49:45,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3026 conditions, 1038 events. 451/1038 cut-off events. For 2000/2044 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7390 event pairs, 260 based on Foata normal form. 28/962 useless extension candidates. Maximal degree in co-relation 2995. Up to 514 conditions per place. [2024-06-27 21:49:45,341 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 19 selfloop transitions, 3 changer transitions 15/65 dead transitions. [2024-06-27 21:49:45,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 65 transitions, 420 flow [2024-06-27 21:49:45,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:49:45,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:49:45,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-06-27 21:49:45,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2024-06-27 21:49:45,344 INFO L175 Difference]: Start difference. First operand has 73 places, 46 transitions, 268 flow. Second operand 7 states and 213 transitions. [2024-06-27 21:49:45,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 65 transitions, 420 flow [2024-06-27 21:49:45,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 339 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-27 21:49:45,349 INFO L231 Difference]: Finished difference. Result has 70 places, 46 transitions, 224 flow [2024-06-27 21:49:45,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=224, PETRI_PLACES=70, PETRI_TRANSITIONS=46} [2024-06-27 21:49:45,350 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 21 predicate places. [2024-06-27 21:49:45,350 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 46 transitions, 224 flow [2024-06-27 21:49:45,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:45,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:49:45,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:49:45,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 21:49:45,351 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:49:45,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:49:45,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1192166186, now seen corresponding path program 2 times [2024-06-27 21:49:45,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:49:45,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196594491] [2024-06-27 21:49:45,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:49:45,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:49:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:49:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:49:45,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:49:45,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196594491] [2024-06-27 21:49:45,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196594491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:49:45,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:49:45,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:49:45,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252856159] [2024-06-27 21:49:45,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:49:45,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:49:45,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:49:45,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:49:45,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:49:45,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-06-27 21:49:45,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 46 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:45,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:49:45,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-06-27 21:49:45,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:49:45,689 INFO L124 PetriNetUnfolderBase]: 650/1369 cut-off events. [2024-06-27 21:49:45,689 INFO L125 PetriNetUnfolderBase]: For 1911/1936 co-relation queries the response was YES. [2024-06-27 21:49:45,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3895 conditions, 1369 events. 650/1369 cut-off events. For 1911/1936 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9458 event pairs, 230 based on Foata normal form. 48/1367 useless extension candidates. Maximal degree in co-relation 3868. Up to 403 conditions per place. [2024-06-27 21:49:45,703 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 27 selfloop transitions, 4 changer transitions 21/71 dead transitions. [2024-06-27 21:49:45,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 71 transitions, 430 flow [2024-06-27 21:49:45,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:49:45,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:49:45,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-06-27 21:49:45,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6814814814814815 [2024-06-27 21:49:45,705 INFO L175 Difference]: Start difference. First operand has 70 places, 46 transitions, 224 flow. Second operand 6 states and 184 transitions. [2024-06-27 21:49:45,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 71 transitions, 430 flow [2024-06-27 21:49:45,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 71 transitions, 408 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 21:49:45,713 INFO L231 Difference]: Finished difference. Result has 68 places, 41 transitions, 191 flow [2024-06-27 21:49:45,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=68, PETRI_TRANSITIONS=41} [2024-06-27 21:49:45,715 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 19 predicate places. [2024-06-27 21:49:45,715 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 41 transitions, 191 flow [2024-06-27 21:49:45,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:45,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:49:45,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:49:45,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 21:49:45,717 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:49:45,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:49:45,718 INFO L85 PathProgramCache]: Analyzing trace with hash 824186289, now seen corresponding path program 1 times [2024-06-27 21:49:45,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:49:45,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215735105] [2024-06-27 21:49:45,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:49:45,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:49:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:49:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:49:45,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:49:45,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215735105] [2024-06-27 21:49:45,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215735105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:49:45,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:49:45,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:49:45,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267085067] [2024-06-27 21:49:45,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:49:45,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:49:45,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:49:45,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:49:45,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:49:45,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-06-27 21:49:45,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 41 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:45,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:49:45,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-06-27 21:49:45,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:49:46,021 INFO L124 PetriNetUnfolderBase]: 343/703 cut-off events. [2024-06-27 21:49:46,022 INFO L125 PetriNetUnfolderBase]: For 919/919 co-relation queries the response was YES. [2024-06-27 21:49:46,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2125 conditions, 703 events. 343/703 cut-off events. For 919/919 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3886 event pairs, 63 based on Foata normal form. 18/698 useless extension candidates. Maximal degree in co-relation 2099. Up to 255 conditions per place. [2024-06-27 21:49:46,029 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 31 selfloop transitions, 5 changer transitions 19/70 dead transitions. [2024-06-27 21:49:46,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 70 transitions, 429 flow [2024-06-27 21:49:46,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:49:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:49:46,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-27 21:49:46,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6138888888888889 [2024-06-27 21:49:46,032 INFO L175 Difference]: Start difference. First operand has 68 places, 41 transitions, 191 flow. Second operand 8 states and 221 transitions. [2024-06-27 21:49:46,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 70 transitions, 429 flow [2024-06-27 21:49:46,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 387 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 21:49:46,035 INFO L231 Difference]: Finished difference. Result has 68 places, 41 transitions, 184 flow [2024-06-27 21:49:46,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=184, PETRI_PLACES=68, PETRI_TRANSITIONS=41} [2024-06-27 21:49:46,036 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 19 predicate places. [2024-06-27 21:49:46,036 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 41 transitions, 184 flow [2024-06-27 21:49:46,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:46,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:49:46,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:49:46,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 21:49:46,037 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:49:46,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:49:46,038 INFO L85 PathProgramCache]: Analyzing trace with hash 2005127739, now seen corresponding path program 1 times [2024-06-27 21:49:46,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:49:46,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727402328] [2024-06-27 21:49:46,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:49:46,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:49:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:49:46,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:49:46,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:49:46,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727402328] [2024-06-27 21:49:46,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727402328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:49:46,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:49:46,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:49:46,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139191265] [2024-06-27 21:49:46,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:49:46,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:49:46,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:49:46,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:49:46,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:49:46,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-06-27 21:49:46,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 41 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:46,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:49:46,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-06-27 21:49:46,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:49:46,349 INFO L124 PetriNetUnfolderBase]: 290/638 cut-off events. [2024-06-27 21:49:46,349 INFO L125 PetriNetUnfolderBase]: For 935/1010 co-relation queries the response was YES. [2024-06-27 21:49:46,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1880 conditions, 638 events. 290/638 cut-off events. For 935/1010 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3623 event pairs, 101 based on Foata normal form. 30/639 useless extension candidates. Maximal degree in co-relation 1856. Up to 185 conditions per place. [2024-06-27 21:49:46,353 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 23 selfloop transitions, 2 changer transitions 25/67 dead transitions. [2024-06-27 21:49:46,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 67 transitions, 350 flow [2024-06-27 21:49:46,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:49:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:49:46,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-06-27 21:49:46,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6634920634920635 [2024-06-27 21:49:46,354 INFO L175 Difference]: Start difference. First operand has 68 places, 41 transitions, 184 flow. Second operand 7 states and 209 transitions. [2024-06-27 21:49:46,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 67 transitions, 350 flow [2024-06-27 21:49:46,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 67 transitions, 328 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 21:49:46,357 INFO L231 Difference]: Finished difference. Result has 66 places, 36 transitions, 131 flow [2024-06-27 21:49:46,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=131, PETRI_PLACES=66, PETRI_TRANSITIONS=36} [2024-06-27 21:49:46,358 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 17 predicate places. [2024-06-27 21:49:46,358 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 36 transitions, 131 flow [2024-06-27 21:49:46,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:46,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:49:46,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:49:46,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 21:49:46,359 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:49:46,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:49:46,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2112834649, now seen corresponding path program 2 times [2024-06-27 21:49:46,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:49:46,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013140720] [2024-06-27 21:49:46,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:49:46,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:49:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:49:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:49:46,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:49:46,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013140720] [2024-06-27 21:49:46,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013140720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:49:46,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:49:46,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:49:46,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227502251] [2024-06-27 21:49:46,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:49:46,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:49:46,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:49:46,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:49:46,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:49:46,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 45 [2024-06-27 21:49:46,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 36 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:46,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:49:46,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 45 [2024-06-27 21:49:46,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:49:46,519 INFO L124 PetriNetUnfolderBase]: 311/641 cut-off events. [2024-06-27 21:49:46,520 INFO L125 PetriNetUnfolderBase]: For 579/587 co-relation queries the response was YES. [2024-06-27 21:49:46,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1552 conditions, 641 events. 311/641 cut-off events. For 579/587 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3455 event pairs, 78 based on Foata normal form. 27/639 useless extension candidates. Maximal degree in co-relation 1530. Up to 258 conditions per place. [2024-06-27 21:49:46,523 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 26 selfloop transitions, 5 changer transitions 1/50 dead transitions. [2024-06-27 21:49:46,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 50 transitions, 225 flow [2024-06-27 21:49:46,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:49:46,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:49:46,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-06-27 21:49:46,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2024-06-27 21:49:46,525 INFO L175 Difference]: Start difference. First operand has 66 places, 36 transitions, 131 flow. Second operand 4 states and 134 transitions. [2024-06-27 21:49:46,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 50 transitions, 225 flow [2024-06-27 21:49:46,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 50 transitions, 197 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 21:49:46,528 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 137 flow [2024-06-27 21:49:46,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2024-06-27 21:49:46,530 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2024-06-27 21:49:46,530 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 137 flow [2024-06-27 21:49:46,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:46,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:49:46,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:49:46,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 21:49:46,531 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:49:46,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:49:46,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1270095558, now seen corresponding path program 1 times [2024-06-27 21:49:46,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:49:46,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476329595] [2024-06-27 21:49:46,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:49:46,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:49:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:49:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:49:46,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:49:46,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476329595] [2024-06-27 21:49:46,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476329595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:49:46,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:49:46,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:49:46,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93647612] [2024-06-27 21:49:46,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:49:46,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:49:46,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:49:46,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:49:46,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:49:46,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 45 [2024-06-27 21:49:46,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:46,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:49:46,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 45 [2024-06-27 21:49:46,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:49:46,723 INFO L124 PetriNetUnfolderBase]: 247/514 cut-off events. [2024-06-27 21:49:46,724 INFO L125 PetriNetUnfolderBase]: For 264/346 co-relation queries the response was YES. [2024-06-27 21:49:46,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 514 events. 247/514 cut-off events. For 264/346 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2425 event pairs, 27 based on Foata normal form. 30/523 useless extension candidates. Maximal degree in co-relation 1284. Up to 181 conditions per place. [2024-06-27 21:49:46,726 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 30 selfloop transitions, 8 changer transitions 1/57 dead transitions. [2024-06-27 21:49:46,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 268 flow [2024-06-27 21:49:46,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:49:46,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:49:46,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-06-27 21:49:46,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7377777777777778 [2024-06-27 21:49:46,728 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 137 flow. Second operand 5 states and 166 transitions. [2024-06-27 21:49:46,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 268 flow [2024-06-27 21:49:46,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 258 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 21:49:46,731 INFO L231 Difference]: Finished difference. Result has 59 places, 42 transitions, 177 flow [2024-06-27 21:49:46,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=59, PETRI_TRANSITIONS=42} [2024-06-27 21:49:46,731 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2024-06-27 21:49:46,732 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 42 transitions, 177 flow [2024-06-27 21:49:46,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:46,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:49:46,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:49:46,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 21:49:46,733 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:49:46,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:49:46,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1824922465, now seen corresponding path program 1 times [2024-06-27 21:49:46,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:49:46,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535092179] [2024-06-27 21:49:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:49:46,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:49:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:49:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:49:46,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:49:46,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535092179] [2024-06-27 21:49:46,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535092179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:49:46,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:49:46,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:49:46,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653062818] [2024-06-27 21:49:46,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:49:46,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:49:46,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:49:46,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:49:46,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:49:46,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 45 [2024-06-27 21:49:46,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 42 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:46,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:49:46,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 45 [2024-06-27 21:49:46,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:49:46,950 INFO L124 PetriNetUnfolderBase]: 152/309 cut-off events. [2024-06-27 21:49:46,951 INFO L125 PetriNetUnfolderBase]: For 375/496 co-relation queries the response was YES. [2024-06-27 21:49:46,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 309 events. 152/309 cut-off events. For 375/496 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1069 event pairs, 6 based on Foata normal form. 28/322 useless extension candidates. Maximal degree in co-relation 851. Up to 84 conditions per place. [2024-06-27 21:49:46,952 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 28 selfloop transitions, 11 changer transitions 1/58 dead transitions. [2024-06-27 21:49:46,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 58 transitions, 295 flow [2024-06-27 21:49:46,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:49:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:49:46,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2024-06-27 21:49:46,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2024-06-27 21:49:46,954 INFO L175 Difference]: Start difference. First operand has 59 places, 42 transitions, 177 flow. Second operand 6 states and 192 transitions. [2024-06-27 21:49:46,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 58 transitions, 295 flow [2024-06-27 21:49:46,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 254 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 21:49:46,956 INFO L231 Difference]: Finished difference. Result has 59 places, 42 transitions, 175 flow [2024-06-27 21:49:46,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=175, PETRI_PLACES=59, PETRI_TRANSITIONS=42} [2024-06-27 21:49:46,957 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2024-06-27 21:49:46,957 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 42 transitions, 175 flow [2024-06-27 21:49:46,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:46,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:49:46,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:49:46,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 21:49:46,958 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:49:46,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:49:46,958 INFO L85 PathProgramCache]: Analyzing trace with hash 835649892, now seen corresponding path program 1 times [2024-06-27 21:49:46,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:49:46,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86752214] [2024-06-27 21:49:46,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:49:46,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:49:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:49:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:49:47,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:49:47,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86752214] [2024-06-27 21:49:47,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86752214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:49:47,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:49:47,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:49:47,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203743748] [2024-06-27 21:49:47,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:49:47,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:49:47,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:49:47,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:49:47,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:49:47,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-27 21:49:47,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 42 transitions, 175 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:47,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:49:47,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-27 21:49:47,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:49:47,214 INFO L124 PetriNetUnfolderBase]: 126/285 cut-off events. [2024-06-27 21:49:47,215 INFO L125 PetriNetUnfolderBase]: For 205/209 co-relation queries the response was YES. [2024-06-27 21:49:47,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 285 events. 126/285 cut-off events. For 205/209 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1054 event pairs, 28 based on Foata normal form. 8/272 useless extension candidates. Maximal degree in co-relation 713. Up to 119 conditions per place. [2024-06-27 21:49:47,216 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2024-06-27 21:49:47,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 267 flow [2024-06-27 21:49:47,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:49:47,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:49:47,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 21:49:47,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-27 21:49:47,218 INFO L175 Difference]: Start difference. First operand has 59 places, 42 transitions, 175 flow. Second operand 7 states and 154 transitions. [2024-06-27 21:49:47,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 267 flow [2024-06-27 21:49:47,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 211 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 21:49:47,219 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2024-06-27 21:49:47,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2024-06-27 21:49:47,220 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2024-06-27 21:49:47,220 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2024-06-27 21:49:47,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:49:47,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 7 remaining) [2024-06-27 21:49:47,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-06-27 21:49:47,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-06-27 21:49:47,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-06-27 21:49:47,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-06-27 21:49:47,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-06-27 21:49:47,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2024-06-27 21:49:47,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 21:49:47,225 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:49:47,228 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 21:49:47,228 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 21:49:47,231 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-27 21:49:47,232 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-27 21:49:47,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 09:49:47 BasicIcfg [2024-06-27 21:49:47,233 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 21:49:47,233 INFO L158 Benchmark]: Toolchain (without parser) took 7494.40ms. Allocated memory was 178.3MB in the beginning and 278.9MB in the end (delta: 100.7MB). Free memory was 106.5MB in the beginning and 161.2MB in the end (delta: -54.6MB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. [2024-06-27 21:49:47,233 INFO L158 Benchmark]: Witness Parser took 0.21ms. Allocated memory is still 102.8MB. Free memory is still 64.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:49:47,234 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 178.3MB. Free memory is still 153.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:49:47,234 INFO L158 Benchmark]: CACSL2BoogieTranslator took 533.94ms. Allocated memory is still 178.3MB. Free memory was 106.4MB in the beginning and 133.5MB in the end (delta: -27.1MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2024-06-27 21:49:47,234 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.39ms. Allocated memory is still 178.3MB. Free memory was 133.5MB in the beginning and 131.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 21:49:47,234 INFO L158 Benchmark]: Boogie Preprocessor took 37.59ms. Allocated memory is still 178.3MB. Free memory was 131.4MB in the beginning and 129.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 21:49:47,235 INFO L158 Benchmark]: RCFGBuilder took 369.31ms. Allocated memory is still 178.3MB. Free memory was 129.3MB in the beginning and 109.7MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-27 21:49:47,235 INFO L158 Benchmark]: TraceAbstraction took 6499.84ms. Allocated memory was 178.3MB in the beginning and 278.9MB in the end (delta: 100.7MB). Free memory was 109.0MB in the beginning and 161.2MB in the end (delta: -52.1MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. [2024-06-27 21:49:47,236 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 0.21ms. Allocated memory is still 102.8MB. Free memory is still 64.8MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.19ms. Allocated memory is still 178.3MB. Free memory is still 153.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 533.94ms. Allocated memory is still 178.3MB. Free memory was 106.4MB in the beginning and 133.5MB in the end (delta: -27.1MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.39ms. Allocated memory is still 178.3MB. Free memory was 133.5MB in the beginning and 131.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.59ms. Allocated memory is still 178.3MB. Free memory was 131.4MB in the beginning and 129.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 369.31ms. Allocated memory is still 178.3MB. Free memory was 129.3MB in the beginning and 109.7MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 6499.84ms. Allocated memory was 178.3MB in the beginning and 278.9MB in the end (delta: 100.7MB). Free memory was 109.0MB in the beginning and 161.2MB in the end (delta: -52.1MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 781]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 783]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 784]: 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 7 procedures, 69 locations, 7 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: 6.4s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 822 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 666 mSDsluCounter, 565 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 398 mSDsCounter, 60 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1606 IncrementalHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 60 mSolverCounterUnsat, 167 mSDtfsCounter, 1606 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=351occurred in iteration=7, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 337 NumberOfCodeBlocks, 337 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 321 ConstructedInterpolants, 0 QuantifiedInterpolants, 1425 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 21:49:47,267 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