./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe034_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/safe034_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe034_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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:01:31,910 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:01:31,973 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:01:31,978 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:01:31,979 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:01:32,003 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:01:32,004 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:01:32,004 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:01:32,005 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:01:32,008 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:01:32,008 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:01:32,009 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:01:32,009 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:01:32,011 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:01:32,011 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:01:32,011 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:01:32,011 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:01:32,011 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:01:32,012 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:01:32,012 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:01:32,013 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:01:32,014 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:01:32,014 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:01:32,014 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:01:32,014 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:01:32,014 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:01:32,015 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:01:32,015 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:01:32,015 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:01:32,015 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:01:32,016 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:01:32,016 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:01:32,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:01:32,017 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:01:32,018 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:01:32,018 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:01:32,018 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:01:32,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:01:32,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:01:32,019 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:01:32,019 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:01:32,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:01:32,019 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:01:32,020 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:01:32,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:01:32,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:01:32,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:01:32,261 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:01:32,262 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:01:32,263 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.i [2024-06-27 23:01:33,388 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:01:33,580 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:01:33,581 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.i [2024-06-27 23:01:33,590 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/507032976/96d6c8f3dc3641dcb6da16976ae93233/FLAG231dced16 [2024-06-27 23:01:33,616 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/507032976/96d6c8f3dc3641dcb6da16976ae93233 [2024-06-27 23:01:33,618 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:01:33,619 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:01:33,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe034_tso.yml/witness.yml [2024-06-27 23:01:33,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:01:33,672 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:01:33,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:01:33,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:01:33,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:01:33,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:01:33" (1/2) ... [2024-06-27 23:01:33,678 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@358fd8a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:01:33, skipping insertion in model container [2024-06-27 23:01:33,678 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:01:33" (1/2) ... [2024-06-27 23:01:33,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@64954c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:01:33, skipping insertion in model container [2024-06-27 23:01:33,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:01:33" (2/2) ... [2024-06-27 23:01:33,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@358fd8a0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:33, skipping insertion in model container [2024-06-27 23:01:33,682 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:01:33" (2/2) ... [2024-06-27 23:01:33,682 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:01:33,703 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:01:33,705 INFO L97 edCorrectnessWitness]: Location invariant before [L787-L787] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) [2024-06-27 23:01:33,705 INFO L97 edCorrectnessWitness]: Location invariant before [L788-L788] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) [2024-06-27 23:01:33,705 INFO L97 edCorrectnessWitness]: Location invariant before [L785-L785] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) [2024-06-27 23:01:33,705 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:01:33,705 INFO L106 edCorrectnessWitness]: ghost_update [L783-L783] multithreaded = 1; [2024-06-27 23:01:33,745 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:01:34,020 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:01:34,029 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:01:34,109 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:01:34,163 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:01:34,166 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:34 WrapperNode [2024-06-27 23:01:34,167 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:01:34,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:01:34,168 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:01:34,168 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:01:34,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:34" (1/1) ... [2024-06-27 23:01:34,194 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:34" (1/1) ... [2024-06-27 23:01:34,212 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2024-06-27 23:01:34,213 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:01:34,213 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:01:34,213 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:01:34,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:01:34,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:34" (1/1) ... [2024-06-27 23:01:34,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:34" (1/1) ... [2024-06-27 23:01:34,229 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:34" (1/1) ... [2024-06-27 23:01:34,239 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 23:01:34,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:34" (1/1) ... [2024-06-27 23:01:34,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:34" (1/1) ... [2024-06-27 23:01:34,244 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:34" (1/1) ... [2024-06-27 23:01:34,245 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:34" (1/1) ... [2024-06-27 23:01:34,246 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:34" (1/1) ... [2024-06-27 23:01:34,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:34" (1/1) ... [2024-06-27 23:01:34,249 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:01:34,249 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:01:34,249 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:01:34,249 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:01:34,250 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:34" (1/1) ... [2024-06-27 23:01:34,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:01:34,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:01:34,298 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 23:01:34,316 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 23:01:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:01:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:01:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:01:34,329 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:01:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:01:34,330 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:01:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 23:01:34,330 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 23:01:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:01:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:01:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:01:34,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:01:34,332 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 23:01:34,447 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:01:34,449 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:01:34,613 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:01:34,614 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:01:34,691 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:01:34,691 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:01:34,691 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:01:34 BoogieIcfgContainer [2024-06-27 23:01:34,691 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:01:34,693 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:01:34,694 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:01:34,696 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:01:34,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:01:33" (1/4) ... [2024-06-27 23:01:34,697 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2130280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:01:34, skipping insertion in model container [2024-06-27 23:01:34,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:01:33" (2/4) ... [2024-06-27 23:01:34,697 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2130280 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:01:34, skipping insertion in model container [2024-06-27 23:01:34,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:34" (3/4) ... [2024-06-27 23:01:34,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2130280 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:01:34, skipping insertion in model container [2024-06-27 23:01:34,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:01:34" (4/4) ... [2024-06-27 23:01:34,700 INFO L112 eAbstractionObserver]: Analyzing ICFG safe034_tso.i [2024-06-27 23:01:34,713 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:01:34,713 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-27 23:01:34,713 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:01:34,752 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:01:34,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-27 23:01:34,806 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-27 23:01:34,806 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:01:34,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:01:34,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-27 23:01:34,811 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-27 23:01:34,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:01:34,827 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;@55194a83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:01:34,827 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-27 23:01:34,833 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:01:34,833 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:01:34,834 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:01:34,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:34,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:01:34,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:34,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:34,839 INFO L85 PathProgramCache]: Analyzing trace with hash 220444948, now seen corresponding path program 1 times [2024-06-27 23:01:34,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:34,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847181772] [2024-06-27 23:01:34,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:34,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:35,146 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 23:01:35,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:35,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847181772] [2024-06-27 23:01:35,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847181772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:35,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:35,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:01:35,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992299648] [2024-06-27 23:01:35,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:35,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:01:35,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:35,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:01:35,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:01:35,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 42 [2024-06-27 23:01:35,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:35,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:35,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 42 [2024-06-27 23:01:35,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:35,263 INFO L124 PetriNetUnfolderBase]: 105/273 cut-off events. [2024-06-27 23:01:35,264 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 23:01:35,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 273 events. 105/273 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1540 event pairs, 33 based on Foata normal form. 2/246 useless extension candidates. Maximal degree in co-relation 470. Up to 163 conditions per place. [2024-06-27 23:01:35,269 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 20 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2024-06-27 23:01:35,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 136 flow [2024-06-27 23:01:35,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:01:35,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:01:35,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-27 23:01:35,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.753968253968254 [2024-06-27 23:01:35,279 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 95 transitions. [2024-06-27 23:01:35,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 136 flow [2024-06-27 23:01:35,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 132 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 23:01:35,283 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 91 flow [2024-06-27 23:01:35,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-27 23:01:35,287 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2024-06-27 23:01:35,287 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 91 flow [2024-06-27 23:01:35,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:35,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:35,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:35,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:01:35,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:35,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:35,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1842982080, now seen corresponding path program 1 times [2024-06-27 23:01:35,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:35,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939856067] [2024-06-27 23:01:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:35,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:35,386 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 23:01:35,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:35,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939856067] [2024-06-27 23:01:35,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939856067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:35,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:35,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:01:35,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144408228] [2024-06-27 23:01:35,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:35,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:01:35,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:35,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:01:35,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:01:35,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 42 [2024-06-27 23:01:35,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:35,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:35,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 42 [2024-06-27 23:01:35,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:35,512 INFO L124 PetriNetUnfolderBase]: 169/434 cut-off events. [2024-06-27 23:01:35,521 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-06-27 23:01:35,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 434 events. 169/434 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2452 event pairs, 61 based on Foata normal form. 4/413 useless extension candidates. Maximal degree in co-relation 841. Up to 260 conditions per place. [2024-06-27 23:01:35,525 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 30 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2024-06-27 23:01:35,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 211 flow [2024-06-27 23:01:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:01:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:01:35,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-06-27 23:01:35,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2024-06-27 23:01:35,527 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 91 flow. Second operand 4 states and 124 transitions. [2024-06-27 23:01:35,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 211 flow [2024-06-27 23:01:35,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:01:35,529 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 135 flow [2024-06-27 23:01:35,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-27 23:01:35,530 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-27 23:01:35,530 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 135 flow [2024-06-27 23:01:35,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:35,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:35,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:35,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:01:35,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:35,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:35,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1821827193, now seen corresponding path program 1 times [2024-06-27 23:01:35,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:35,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547540336] [2024-06-27 23:01:35,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:35,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:35,649 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 23:01:35,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:35,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547540336] [2024-06-27 23:01:35,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547540336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:35,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:35,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:01:35,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879437039] [2024-06-27 23:01:35,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:35,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:01:35,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:35,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:01:35,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:01:35,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 42 [2024-06-27 23:01:35,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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 23:01:35,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:35,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 42 [2024-06-27 23:01:35,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:35,754 INFO L124 PetriNetUnfolderBase]: 194/480 cut-off events. [2024-06-27 23:01:35,754 INFO L125 PetriNetUnfolderBase]: For 191/194 co-relation queries the response was YES. [2024-06-27 23:01:35,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1032 conditions, 480 events. 194/480 cut-off events. For 191/194 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2735 event pairs, 66 based on Foata normal form. 6/464 useless extension candidates. Maximal degree in co-relation 1017. Up to 276 conditions per place. [2024-06-27 23:01:35,758 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 24 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2024-06-27 23:01:35,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 213 flow [2024-06-27 23:01:35,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:01:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:01:35,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-06-27 23:01:35,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2024-06-27 23:01:35,760 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 135 flow. Second operand 4 states and 116 transitions. [2024-06-27 23:01:35,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 213 flow [2024-06-27 23:01:35,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 211 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 23:01:35,762 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 150 flow [2024-06-27 23:01:35,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2024-06-27 23:01:35,763 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-06-27 23:01:35,763 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 150 flow [2024-06-27 23:01:35,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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 23:01:35,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:35,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:35,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:01:35,764 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:35,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:35,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1740858302, now seen corresponding path program 1 times [2024-06-27 23:01:35,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:35,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317983046] [2024-06-27 23:01:35,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:35,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:35,942 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 23:01:35,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:35,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317983046] [2024-06-27 23:01:35,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317983046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:35,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:35,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:01:35,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767784720] [2024-06-27 23:01:35,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:35,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:01:35,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:35,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:01:35,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:01:35,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 42 [2024-06-27 23:01:35,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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 23:01:35,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:35,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 42 [2024-06-27 23:01:35,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:36,112 INFO L124 PetriNetUnfolderBase]: 180/457 cut-off events. [2024-06-27 23:01:36,113 INFO L125 PetriNetUnfolderBase]: For 343/343 co-relation queries the response was YES. [2024-06-27 23:01:36,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1075 conditions, 457 events. 180/457 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2771 event pairs, 24 based on Foata normal form. 8/442 useless extension candidates. Maximal degree in co-relation 1057. Up to 209 conditions per place. [2024-06-27 23:01:36,116 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 28 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2024-06-27 23:01:36,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 254 flow [2024-06-27 23:01:36,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:01:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:01:36,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-27 23:01:36,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7321428571428571 [2024-06-27 23:01:36,157 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 150 flow. Second operand 4 states and 123 transitions. [2024-06-27 23:01:36,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 254 flow [2024-06-27 23:01:36,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 243 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:01:36,159 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 172 flow [2024-06-27 23:01:36,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2024-06-27 23:01:36,160 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-06-27 23:01:36,160 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 172 flow [2024-06-27 23:01:36,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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 23:01:36,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:36,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:36,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:01:36,160 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:36,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:36,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1512779522, now seen corresponding path program 2 times [2024-06-27 23:01:36,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:36,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687622550] [2024-06-27 23:01:36,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:36,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:36,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:36,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687622550] [2024-06-27 23:01:36,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687622550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:36,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:36,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:01:36,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410201761] [2024-06-27 23:01:36,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:36,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:01:36,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:36,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:01:36,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:01:36,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 42 [2024-06-27 23:01:36,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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 23:01:36,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:36,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 42 [2024-06-27 23:01:36,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:36,306 INFO L124 PetriNetUnfolderBase]: 168/427 cut-off events. [2024-06-27 23:01:36,307 INFO L125 PetriNetUnfolderBase]: For 468/468 co-relation queries the response was YES. [2024-06-27 23:01:36,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 427 events. 168/427 cut-off events. For 468/468 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2492 event pairs, 25 based on Foata normal form. 8/418 useless extension candidates. Maximal degree in co-relation 1025. Up to 143 conditions per place. [2024-06-27 23:01:36,309 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 29 selfloop transitions, 9 changer transitions 0/53 dead transitions. [2024-06-27 23:01:36,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 272 flow [2024-06-27 23:01:36,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:01:36,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:01:36,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-06-27 23:01:36,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-06-27 23:01:36,312 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 172 flow. Second operand 5 states and 147 transitions. [2024-06-27 23:01:36,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 272 flow [2024-06-27 23:01:36,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 53 transitions, 255 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 23:01:36,315 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 169 flow [2024-06-27 23:01:36,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2024-06-27 23:01:36,315 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-06-27 23:01:36,316 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 169 flow [2024-06-27 23:01:36,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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 23:01:36,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:36,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:36,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:01:36,317 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:36,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:36,317 INFO L85 PathProgramCache]: Analyzing trace with hash -493810952, now seen corresponding path program 1 times [2024-06-27 23:01:36,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:36,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912136632] [2024-06-27 23:01:36,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:36,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:36,394 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 23:01:36,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:36,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912136632] [2024-06-27 23:01:36,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912136632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:36,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:36,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:01:36,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802847547] [2024-06-27 23:01:36,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:36,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:01:36,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:36,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:01:36,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:01:36,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:36,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:36,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:36,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:36,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:36,482 INFO L124 PetriNetUnfolderBase]: 254/594 cut-off events. [2024-06-27 23:01:36,482 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2024-06-27 23:01:36,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1460 conditions, 594 events. 254/594 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3526 event pairs, 87 based on Foata normal form. 2/571 useless extension candidates. Maximal degree in co-relation 1440. Up to 384 conditions per place. [2024-06-27 23:01:36,486 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 38 selfloop transitions, 11 changer transitions 0/63 dead transitions. [2024-06-27 23:01:36,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 352 flow [2024-06-27 23:01:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:01:36,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:01:36,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-06-27 23:01:36,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-06-27 23:01:36,487 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 169 flow. Second operand 5 states and 147 transitions. [2024-06-27 23:01:36,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 352 flow [2024-06-27 23:01:36,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 329 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 23:01:36,490 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 233 flow [2024-06-27 23:01:36,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=51, 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=233, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-06-27 23:01:36,491 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2024-06-27 23:01:36,491 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 233 flow [2024-06-27 23:01:36,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:36,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:36,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:36,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:01:36,492 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:36,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:36,492 INFO L85 PathProgramCache]: Analyzing trace with hash -455777672, now seen corresponding path program 2 times [2024-06-27 23:01:36,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:36,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178477269] [2024-06-27 23:01:36,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:36,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:36,549 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 23:01:36,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:36,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178477269] [2024-06-27 23:01:36,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178477269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:36,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:36,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:01:36,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444682855] [2024-06-27 23:01:36,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:36,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:01:36,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:36,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:01:36,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:01:36,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:36,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:36,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:36,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:36,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:36,628 INFO L124 PetriNetUnfolderBase]: 249/585 cut-off events. [2024-06-27 23:01:36,640 INFO L125 PetriNetUnfolderBase]: For 748/748 co-relation queries the response was YES. [2024-06-27 23:01:36,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1542 conditions, 585 events. 249/585 cut-off events. For 748/748 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3469 event pairs, 89 based on Foata normal form. 2/563 useless extension candidates. Maximal degree in co-relation 1519. Up to 380 conditions per place. [2024-06-27 23:01:36,643 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 33 selfloop transitions, 12 changer transitions 0/59 dead transitions. [2024-06-27 23:01:36,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 354 flow [2024-06-27 23:01:36,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:01:36,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:01:36,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-06-27 23:01:36,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.680952380952381 [2024-06-27 23:01:36,644 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 233 flow. Second operand 5 states and 143 transitions. [2024-06-27 23:01:36,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 354 flow [2024-06-27 23:01:36,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 352 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 23:01:36,647 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 265 flow [2024-06-27 23:01:36,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2024-06-27 23:01:36,647 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2024-06-27 23:01:36,647 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 265 flow [2024-06-27 23:01:36,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:36,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:36,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:36,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:01:36,648 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:36,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:36,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1194431257, now seen corresponding path program 1 times [2024-06-27 23:01:36,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:36,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569171175] [2024-06-27 23:01:36,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:36,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:36,718 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 23:01:36,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:36,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569171175] [2024-06-27 23:01:36,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569171175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:36,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:36,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:36,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222979970] [2024-06-27 23:01:36,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:36,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:36,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:36,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:36,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:36,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:36,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 48 transitions, 265 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 23:01:36,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:36,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:36,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:36,833 INFO L124 PetriNetUnfolderBase]: 261/618 cut-off events. [2024-06-27 23:01:36,833 INFO L125 PetriNetUnfolderBase]: For 939/939 co-relation queries the response was YES. [2024-06-27 23:01:36,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 618 events. 261/618 cut-off events. For 939/939 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3730 event pairs, 87 based on Foata normal form. 4/596 useless extension candidates. Maximal degree in co-relation 1654. Up to 386 conditions per place. [2024-06-27 23:01:36,837 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 44 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-27 23:01:36,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 68 transitions, 425 flow [2024-06-27 23:01:36,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:36,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-06-27 23:01:36,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2024-06-27 23:01:36,841 INFO L175 Difference]: Start difference. First operand has 63 places, 48 transitions, 265 flow. Second operand 6 states and 172 transitions. [2024-06-27 23:01:36,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 68 transitions, 425 flow [2024-06-27 23:01:36,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 68 transitions, 412 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 23:01:36,846 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 284 flow [2024-06-27 23:01:36,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=284, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2024-06-27 23:01:36,848 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2024-06-27 23:01:36,848 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 284 flow [2024-06-27 23:01:36,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 23:01:36,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:36,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:36,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:01:36,849 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:36,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:36,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2105902857, now seen corresponding path program 2 times [2024-06-27 23:01:36,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:36,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492999385] [2024-06-27 23:01:36,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:36,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:36,937 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 23:01:36,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:36,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492999385] [2024-06-27 23:01:36,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492999385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:36,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:36,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:36,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226796808] [2024-06-27 23:01:36,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:36,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:36,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:36,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:36,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:36,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:36,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 284 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 23:01:36,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:36,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:36,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:37,030 INFO L124 PetriNetUnfolderBase]: 273/639 cut-off events. [2024-06-27 23:01:37,031 INFO L125 PetriNetUnfolderBase]: For 1295/1295 co-relation queries the response was YES. [2024-06-27 23:01:37,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 639 events. 273/639 cut-off events. For 1295/1295 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3871 event pairs, 87 based on Foata normal form. 4/621 useless extension candidates. Maximal degree in co-relation 1758. Up to 346 conditions per place. [2024-06-27 23:01:37,034 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 42 selfloop transitions, 15 changer transitions 0/71 dead transitions. [2024-06-27 23:01:37,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 71 transitions, 468 flow [2024-06-27 23:01:37,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:37,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:37,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2024-06-27 23:01:37,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6865079365079365 [2024-06-27 23:01:37,036 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 284 flow. Second operand 6 states and 173 transitions. [2024-06-27 23:01:37,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 71 transitions, 468 flow [2024-06-27 23:01:37,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 424 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:01:37,040 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 282 flow [2024-06-27 23:01:37,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2024-06-27 23:01:37,041 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2024-06-27 23:01:37,041 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 282 flow [2024-06-27 23:01:37,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 23:01:37,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:37,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:37,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:01:37,043 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:37,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:37,043 INFO L85 PathProgramCache]: Analyzing trace with hash 505108825, now seen corresponding path program 3 times [2024-06-27 23:01:37,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:37,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90435415] [2024-06-27 23:01:37,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:37,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:37,125 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 23:01:37,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:37,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90435415] [2024-06-27 23:01:37,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90435415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:37,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:37,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:37,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243078621] [2024-06-27 23:01:37,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:37,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:37,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:37,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:37,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:37,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:37,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 23:01:37,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:37,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:37,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:37,266 INFO L124 PetriNetUnfolderBase]: 265/625 cut-off events. [2024-06-27 23:01:37,266 INFO L125 PetriNetUnfolderBase]: For 1249/1249 co-relation queries the response was YES. [2024-06-27 23:01:37,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1718 conditions, 625 events. 265/625 cut-off events. For 1249/1249 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3816 event pairs, 93 based on Foata normal form. 4/605 useless extension candidates. Maximal degree in co-relation 1691. Up to 342 conditions per place. [2024-06-27 23:01:37,271 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 37 selfloop transitions, 15 changer transitions 0/66 dead transitions. [2024-06-27 23:01:37,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 422 flow [2024-06-27 23:01:37,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:37,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:37,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-27 23:01:37,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6706349206349206 [2024-06-27 23:01:37,273 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 282 flow. Second operand 6 states and 169 transitions. [2024-06-27 23:01:37,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 422 flow [2024-06-27 23:01:37,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 66 transitions, 394 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 23:01:37,276 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 288 flow [2024-06-27 23:01:37,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2024-06-27 23:01:37,277 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2024-06-27 23:01:37,277 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 288 flow [2024-06-27 23:01:37,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 23:01:37,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:37,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:37,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:01:37,278 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:37,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:37,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1824155426, now seen corresponding path program 1 times [2024-06-27 23:01:37,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:37,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515043668] [2024-06-27 23:01:37,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:37,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:37,363 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 23:01:37,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:37,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515043668] [2024-06-27 23:01:37,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515043668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:37,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:37,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:37,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675368908] [2024-06-27 23:01:37,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:37,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:37,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:37,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:37,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:37,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:37,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 23:01:37,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:37,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:37,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:37,492 INFO L124 PetriNetUnfolderBase]: 297/683 cut-off events. [2024-06-27 23:01:37,492 INFO L125 PetriNetUnfolderBase]: For 1526/1526 co-relation queries the response was YES. [2024-06-27 23:01:37,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1883 conditions, 683 events. 297/683 cut-off events. For 1526/1526 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4259 event pairs, 64 based on Foata normal form. 4/661 useless extension candidates. Maximal degree in co-relation 1855. Up to 343 conditions per place. [2024-06-27 23:01:37,496 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 40 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2024-06-27 23:01:37,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 69 transitions, 466 flow [2024-06-27 23:01:37,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:01:37,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:01:37,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-06-27 23:01:37,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6952380952380952 [2024-06-27 23:01:37,497 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 288 flow. Second operand 5 states and 146 transitions. [2024-06-27 23:01:37,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 69 transitions, 466 flow [2024-06-27 23:01:37,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 419 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 23:01:37,500 INFO L231 Difference]: Finished difference. Result has 71 places, 53 transitions, 307 flow [2024-06-27 23:01:37,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=307, PETRI_PLACES=71, PETRI_TRANSITIONS=53} [2024-06-27 23:01:37,501 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2024-06-27 23:01:37,501 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 53 transitions, 307 flow [2024-06-27 23:01:37,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 23:01:37,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:37,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:37,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:01:37,502 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:37,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:37,502 INFO L85 PathProgramCache]: Analyzing trace with hash -830213028, now seen corresponding path program 2 times [2024-06-27 23:01:37,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:37,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625818337] [2024-06-27 23:01:37,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:37,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:37,579 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 23:01:37,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:37,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625818337] [2024-06-27 23:01:37,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625818337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:37,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:37,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:37,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487748138] [2024-06-27 23:01:37,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:37,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:37,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:37,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:37,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:37,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:37,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 53 transitions, 307 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 23:01:37,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:37,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:37,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:37,748 INFO L124 PetriNetUnfolderBase]: 289/674 cut-off events. [2024-06-27 23:01:37,749 INFO L125 PetriNetUnfolderBase]: For 1630/1630 co-relation queries the response was YES. [2024-06-27 23:01:37,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1881 conditions, 674 events. 289/674 cut-off events. For 1630/1630 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4203 event pairs, 54 based on Foata normal form. 4/658 useless extension candidates. Maximal degree in co-relation 1852. Up to 339 conditions per place. [2024-06-27 23:01:37,753 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 41 selfloop transitions, 18 changer transitions 0/73 dead transitions. [2024-06-27 23:01:37,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 474 flow [2024-06-27 23:01:37,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:01:37,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:01:37,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-06-27 23:01:37,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2024-06-27 23:01:37,754 INFO L175 Difference]: Start difference. First operand has 71 places, 53 transitions, 307 flow. Second operand 7 states and 195 transitions. [2024-06-27 23:01:37,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 474 flow [2024-06-27 23:01:37,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 462 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 23:01:37,758 INFO L231 Difference]: Finished difference. Result has 76 places, 54 transitions, 345 flow [2024-06-27 23:01:37,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=345, PETRI_PLACES=76, PETRI_TRANSITIONS=54} [2024-06-27 23:01:37,759 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2024-06-27 23:01:37,759 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 54 transitions, 345 flow [2024-06-27 23:01:37,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 23:01:37,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:37,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:37,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:01:37,762 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:37,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:37,762 INFO L85 PathProgramCache]: Analyzing trace with hash -135662410, now seen corresponding path program 3 times [2024-06-27 23:01:37,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:37,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382351036] [2024-06-27 23:01:37,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:37,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:37,841 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 23:01:37,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:37,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382351036] [2024-06-27 23:01:37,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382351036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:37,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:37,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:37,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517996906] [2024-06-27 23:01:37,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:37,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:37,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:37,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:37,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:37,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:37,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 54 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 23:01:37,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:37,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:37,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:37,952 INFO L124 PetriNetUnfolderBase]: 301/687 cut-off events. [2024-06-27 23:01:37,952 INFO L125 PetriNetUnfolderBase]: For 1811/1811 co-relation queries the response was YES. [2024-06-27 23:01:37,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 687 events. 301/687 cut-off events. For 1811/1811 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4244 event pairs, 51 based on Foata normal form. 4/665 useless extension candidates. Maximal degree in co-relation 1970. Up to 297 conditions per place. [2024-06-27 23:01:37,956 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 47 selfloop transitions, 17 changer transitions 0/78 dead transitions. [2024-06-27 23:01:37,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 78 transitions, 551 flow [2024-06-27 23:01:37,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:37,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:37,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2024-06-27 23:01:37,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6865079365079365 [2024-06-27 23:01:37,957 INFO L175 Difference]: Start difference. First operand has 76 places, 54 transitions, 345 flow. Second operand 6 states and 173 transitions. [2024-06-27 23:01:37,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 78 transitions, 551 flow [2024-06-27 23:01:37,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 78 transitions, 508 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 23:01:37,961 INFO L231 Difference]: Finished difference. Result has 77 places, 56 transitions, 357 flow [2024-06-27 23:01:37,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=357, PETRI_PLACES=77, PETRI_TRANSITIONS=56} [2024-06-27 23:01:37,962 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-06-27 23:01:37,962 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 56 transitions, 357 flow [2024-06-27 23:01:37,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 23:01:37,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:37,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:37,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:01:37,963 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:37,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:37,964 INFO L85 PathProgramCache]: Analyzing trace with hash -196623178, now seen corresponding path program 4 times [2024-06-27 23:01:37,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:37,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329637113] [2024-06-27 23:01:37,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:37,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:38,022 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 23:01:38,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:38,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329637113] [2024-06-27 23:01:38,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329637113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:38,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:38,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:38,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584576253] [2024-06-27 23:01:38,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:38,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:38,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:38,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:38,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:38,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:38,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 56 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 23:01:38,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:38,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:38,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:38,117 INFO L124 PetriNetUnfolderBase]: 313/727 cut-off events. [2024-06-27 23:01:38,118 INFO L125 PetriNetUnfolderBase]: For 1872/1872 co-relation queries the response was YES. [2024-06-27 23:01:38,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2141 conditions, 727 events. 313/727 cut-off events. For 1872/1872 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4628 event pairs, 48 based on Foata normal form. 4/705 useless extension candidates. Maximal degree in co-relation 2110. Up to 305 conditions per place. [2024-06-27 23:01:38,122 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 44 selfloop transitions, 18 changer transitions 0/76 dead transitions. [2024-06-27 23:01:38,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 550 flow [2024-06-27 23:01:38,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:38,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2024-06-27 23:01:38,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2024-06-27 23:01:38,124 INFO L175 Difference]: Start difference. First operand has 77 places, 56 transitions, 357 flow. Second operand 6 states and 170 transitions. [2024-06-27 23:01:38,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 550 flow [2024-06-27 23:01:38,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 506 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:01:38,128 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 360 flow [2024-06-27 23:01:38,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=360, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2024-06-27 23:01:38,129 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-06-27 23:01:38,129 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 360 flow [2024-06-27 23:01:38,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 23:01:38,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:38,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:38,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:01:38,129 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:38,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:38,130 INFO L85 PathProgramCache]: Analyzing trace with hash 69709080, now seen corresponding path program 5 times [2024-06-27 23:01:38,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:38,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141883019] [2024-06-27 23:01:38,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:38,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:38,183 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 23:01:38,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:38,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141883019] [2024-06-27 23:01:38,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141883019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:38,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:38,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:38,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834160536] [2024-06-27 23:01:38,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:38,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:38,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:38,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:38,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:38,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:38,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 360 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 23:01:38,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:38,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:38,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:38,274 INFO L124 PetriNetUnfolderBase]: 305/711 cut-off events. [2024-06-27 23:01:38,275 INFO L125 PetriNetUnfolderBase]: For 1921/1921 co-relation queries the response was YES. [2024-06-27 23:01:38,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2005 conditions, 711 events. 305/711 cut-off events. For 1921/1921 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4549 event pairs, 63 based on Foata normal form. 4/693 useless extension candidates. Maximal degree in co-relation 1974. Up to 301 conditions per place. [2024-06-27 23:01:38,279 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 39 selfloop transitions, 19 changer transitions 0/72 dead transitions. [2024-06-27 23:01:38,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 72 transitions, 512 flow [2024-06-27 23:01:38,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:38,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-06-27 23:01:38,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6587301587301587 [2024-06-27 23:01:38,280 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 360 flow. Second operand 6 states and 166 transitions. [2024-06-27 23:01:38,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 72 transitions, 512 flow [2024-06-27 23:01:38,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 72 transitions, 489 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 23:01:38,284 INFO L231 Difference]: Finished difference. Result has 82 places, 58 transitions, 385 flow [2024-06-27 23:01:38,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=385, PETRI_PLACES=82, PETRI_TRANSITIONS=58} [2024-06-27 23:01:38,284 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 39 predicate places. [2024-06-27 23:01:38,284 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 58 transitions, 385 flow [2024-06-27 23:01:38,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 23:01:38,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:38,285 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 23:01:38,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:01:38,285 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:38,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:38,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1713955065, now seen corresponding path program 1 times [2024-06-27 23:01:38,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:38,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429179004] [2024-06-27 23:01:38,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:38,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:38,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:38,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:38,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429179004] [2024-06-27 23:01:38,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429179004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:38,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:38,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:01:38,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200637612] [2024-06-27 23:01:38,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:38,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:01:38,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:38,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:01:38,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:01:38,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:38,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 58 transitions, 385 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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 23:01:38,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:38,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:38,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:38,502 INFO L124 PetriNetUnfolderBase]: 321/776 cut-off events. [2024-06-27 23:01:38,502 INFO L125 PetriNetUnfolderBase]: For 2312/2312 co-relation queries the response was YES. [2024-06-27 23:01:38,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2141 conditions, 776 events. 321/776 cut-off events. For 2312/2312 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5123 event pairs, 66 based on Foata normal form. 8/758 useless extension candidates. Maximal degree in co-relation 2109. Up to 355 conditions per place. [2024-06-27 23:01:38,506 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 48 selfloop transitions, 12 changer transitions 4/78 dead transitions. [2024-06-27 23:01:38,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 78 transitions, 559 flow [2024-06-27 23:01:38,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:38,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:38,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2024-06-27 23:01:38,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6865079365079365 [2024-06-27 23:01:38,507 INFO L175 Difference]: Start difference. First operand has 82 places, 58 transitions, 385 flow. Second operand 6 states and 173 transitions. [2024-06-27 23:01:38,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 78 transitions, 559 flow [2024-06-27 23:01:38,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 78 transitions, 532 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 23:01:38,511 INFO L231 Difference]: Finished difference. Result has 85 places, 56 transitions, 370 flow [2024-06-27 23:01:38,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=85, PETRI_TRANSITIONS=56} [2024-06-27 23:01:38,512 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-06-27 23:01:38,512 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 56 transitions, 370 flow [2024-06-27 23:01:38,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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 23:01:38,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:38,512 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 23:01:38,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:01:38,513 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:38,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:38,513 INFO L85 PathProgramCache]: Analyzing trace with hash 792068217, now seen corresponding path program 2 times [2024-06-27 23:01:38,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:38,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762794562] [2024-06-27 23:01:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:38,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:38,577 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 23:01:38,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:38,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762794562] [2024-06-27 23:01:38,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762794562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:38,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:38,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:01:38,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216586161] [2024-06-27 23:01:38,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:38,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:01:38,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:38,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:01:38,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:01:38,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:38,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 56 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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 23:01:38,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:38,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:38,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:38,690 INFO L124 PetriNetUnfolderBase]: 315/741 cut-off events. [2024-06-27 23:01:38,690 INFO L125 PetriNetUnfolderBase]: For 3176/3176 co-relation queries the response was YES. [2024-06-27 23:01:38,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2132 conditions, 741 events. 315/741 cut-off events. For 3176/3176 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4762 event pairs, 92 based on Foata normal form. 8/723 useless extension candidates. Maximal degree in co-relation 2098. Up to 231 conditions per place. [2024-06-27 23:01:38,695 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 45 selfloop transitions, 14 changer transitions 5/78 dead transitions. [2024-06-27 23:01:38,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 78 transitions, 572 flow [2024-06-27 23:01:38,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:38,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:38,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2024-06-27 23:01:38,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6865079365079365 [2024-06-27 23:01:38,696 INFO L175 Difference]: Start difference. First operand has 85 places, 56 transitions, 370 flow. Second operand 6 states and 173 transitions. [2024-06-27 23:01:38,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 78 transitions, 572 flow [2024-06-27 23:01:38,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 78 transitions, 524 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 23:01:38,701 INFO L231 Difference]: Finished difference. Result has 83 places, 53 transitions, 331 flow [2024-06-27 23:01:38,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=331, PETRI_PLACES=83, PETRI_TRANSITIONS=53} [2024-06-27 23:01:38,701 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-06-27 23:01:38,701 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 53 transitions, 331 flow [2024-06-27 23:01:38,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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 23:01:38,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:38,702 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 23:01:38,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:01:38,702 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:38,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:38,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1971208023, now seen corresponding path program 3 times [2024-06-27 23:01:38,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:38,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645024976] [2024-06-27 23:01:38,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:38,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:38,761 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 23:01:38,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:38,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645024976] [2024-06-27 23:01:38,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645024976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:38,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:38,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:01:38,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817245621] [2024-06-27 23:01:38,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:38,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:01:38,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:38,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:01:38,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:01:38,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:38,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 53 transitions, 331 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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 23:01:38,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:38,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:38,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:38,883 INFO L124 PetriNetUnfolderBase]: 258/627 cut-off events. [2024-06-27 23:01:38,883 INFO L125 PetriNetUnfolderBase]: For 2196/2196 co-relation queries the response was YES. [2024-06-27 23:01:38,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1710 conditions, 627 events. 258/627 cut-off events. For 2196/2196 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3911 event pairs, 60 based on Foata normal form. 8/619 useless extension candidates. Maximal degree in co-relation 1677. Up to 231 conditions per place. [2024-06-27 23:01:38,886 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 39 selfloop transitions, 14 changer transitions 9/76 dead transitions. [2024-06-27 23:01:38,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 76 transitions, 505 flow [2024-06-27 23:01:38,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:01:38,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:01:38,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-06-27 23:01:38,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-06-27 23:01:38,887 INFO L175 Difference]: Start difference. First operand has 83 places, 53 transitions, 331 flow. Second operand 8 states and 220 transitions. [2024-06-27 23:01:38,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 76 transitions, 505 flow [2024-06-27 23:01:38,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 76 transitions, 461 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:01:38,891 INFO L231 Difference]: Finished difference. Result has 82 places, 48 transitions, 281 flow [2024-06-27 23:01:38,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=281, PETRI_PLACES=82, PETRI_TRANSITIONS=48} [2024-06-27 23:01:38,892 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 39 predicate places. [2024-06-27 23:01:38,892 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 48 transitions, 281 flow [2024-06-27 23:01:38,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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 23:01:38,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:38,892 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 23:01:38,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:01:38,892 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:38,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:38,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1522715305, now seen corresponding path program 4 times [2024-06-27 23:01:38,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:38,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916788826] [2024-06-27 23:01:38,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:38,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:38,957 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 23:01:38,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:38,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916788826] [2024-06-27 23:01:38,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916788826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:38,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:38,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:01:38,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954488752] [2024-06-27 23:01:38,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:38,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:01:38,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:38,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:01:38,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:01:38,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:38,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 48 transitions, 281 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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 23:01:38,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:38,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:38,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:39,064 INFO L124 PetriNetUnfolderBase]: 236/583 cut-off events. [2024-06-27 23:01:39,064 INFO L125 PetriNetUnfolderBase]: For 1960/1960 co-relation queries the response was YES. [2024-06-27 23:01:39,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 583 events. 236/583 cut-off events. For 1960/1960 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3538 event pairs, 39 based on Foata normal form. 8/576 useless extension candidates. Maximal degree in co-relation 1489. Up to 225 conditions per place. [2024-06-27 23:01:39,067 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 36 selfloop transitions, 9 changer transitions 12/71 dead transitions. [2024-06-27 23:01:39,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 71 transitions, 451 flow [2024-06-27 23:01:39,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:01:39,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:01:39,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-27 23:01:39,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6598639455782312 [2024-06-27 23:01:39,069 INFO L175 Difference]: Start difference. First operand has 82 places, 48 transitions, 281 flow. Second operand 7 states and 194 transitions. [2024-06-27 23:01:39,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 71 transitions, 451 flow [2024-06-27 23:01:39,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 71 transitions, 392 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-27 23:01:39,072 INFO L231 Difference]: Finished difference. Result has 74 places, 47 transitions, 236 flow [2024-06-27 23:01:39,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=74, PETRI_TRANSITIONS=47} [2024-06-27 23:01:39,072 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-06-27 23:01:39,072 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 47 transitions, 236 flow [2024-06-27 23:01:39,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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 23:01:39,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:39,073 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 23:01:39,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:01:39,073 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:39,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:39,073 INFO L85 PathProgramCache]: Analyzing trace with hash 568769017, now seen corresponding path program 5 times [2024-06-27 23:01:39,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:39,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325261652] [2024-06-27 23:01:39,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:39,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:39,128 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 23:01:39,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:39,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325261652] [2024-06-27 23:01:39,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325261652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:39,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:39,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:01:39,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480036019] [2024-06-27 23:01:39,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:39,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:39,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:39,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:39,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:39,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:39,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 47 transitions, 236 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 23:01:39,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:39,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:39,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:39,213 INFO L124 PetriNetUnfolderBase]: 230/576 cut-off events. [2024-06-27 23:01:39,213 INFO L125 PetriNetUnfolderBase]: For 2428/2428 co-relation queries the response was YES. [2024-06-27 23:01:39,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1491 conditions, 576 events. 230/576 cut-off events. For 2428/2428 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3543 event pairs, 22 based on Foata normal form. 8/569 useless extension candidates. Maximal degree in co-relation 1464. Up to 188 conditions per place. [2024-06-27 23:01:39,216 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 37 selfloop transitions, 9 changer transitions 7/67 dead transitions. [2024-06-27 23:01:39,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 67 transitions, 412 flow [2024-06-27 23:01:39,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:39,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-06-27 23:01:39,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 23:01:39,217 INFO L175 Difference]: Start difference. First operand has 74 places, 47 transitions, 236 flow. Second operand 6 states and 168 transitions. [2024-06-27 23:01:39,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 67 transitions, 412 flow [2024-06-27 23:01:39,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 67 transitions, 390 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:01:39,220 INFO L231 Difference]: Finished difference. Result has 73 places, 44 transitions, 214 flow [2024-06-27 23:01:39,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=73, PETRI_TRANSITIONS=44} [2024-06-27 23:01:39,221 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2024-06-27 23:01:39,221 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 44 transitions, 214 flow [2024-06-27 23:01:39,221 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 23:01:39,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:39,222 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 23:01:39,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:01:39,222 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:39,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:39,222 INFO L85 PathProgramCache]: Analyzing trace with hash 346932021, now seen corresponding path program 6 times [2024-06-27 23:01:39,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:39,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184676591] [2024-06-27 23:01:39,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:39,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:39,283 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 23:01:39,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:39,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184676591] [2024-06-27 23:01:39,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184676591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:39,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:39,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:01:39,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238307679] [2024-06-27 23:01:39,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:39,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:01:39,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:39,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:01:39,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:01:39,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:39,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 44 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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 23:01:39,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:39,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:39,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:39,420 INFO L124 PetriNetUnfolderBase]: 206/523 cut-off events. [2024-06-27 23:01:39,420 INFO L125 PetriNetUnfolderBase]: For 2369/2369 co-relation queries the response was YES. [2024-06-27 23:01:39,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 523 events. 206/523 cut-off events. For 2369/2369 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3194 event pairs, 50 based on Foata normal form. 8/518 useless extension candidates. Maximal degree in co-relation 1349. Up to 169 conditions per place. [2024-06-27 23:01:39,423 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 39 selfloop transitions, 7 changer transitions 12/72 dead transitions. [2024-06-27 23:01:39,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 72 transitions, 418 flow [2024-06-27 23:01:39,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:01:39,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:01:39,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-27 23:01:39,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6402116402116402 [2024-06-27 23:01:39,424 INFO L175 Difference]: Start difference. First operand has 73 places, 44 transitions, 214 flow. Second operand 9 states and 242 transitions. [2024-06-27 23:01:39,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 72 transitions, 418 flow [2024-06-27 23:01:39,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 373 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:01:39,427 INFO L231 Difference]: Finished difference. Result has 71 places, 42 transitions, 178 flow [2024-06-27 23:01:39,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=178, PETRI_PLACES=71, PETRI_TRANSITIONS=42} [2024-06-27 23:01:39,427 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2024-06-27 23:01:39,428 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 42 transitions, 178 flow [2024-06-27 23:01:39,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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 23:01:39,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:39,428 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 23:01:39,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:01:39,428 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:39,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:39,429 INFO L85 PathProgramCache]: Analyzing trace with hash 752426199, now seen corresponding path program 7 times [2024-06-27 23:01:39,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:39,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607229731] [2024-06-27 23:01:39,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:39,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:39,493 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 23:01:39,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:39,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607229731] [2024-06-27 23:01:39,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607229731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:39,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:39,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:01:39,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595396846] [2024-06-27 23:01:39,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:39,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:01:39,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:39,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:01:39,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:01:39,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:39,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 42 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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 23:01:39,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:39,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:39,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:39,584 INFO L124 PetriNetUnfolderBase]: 144/373 cut-off events. [2024-06-27 23:01:39,584 INFO L125 PetriNetUnfolderBase]: For 1293/1293 co-relation queries the response was YES. [2024-06-27 23:01:39,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895 conditions, 373 events. 144/373 cut-off events. For 1293/1293 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2020 event pairs, 46 based on Foata normal form. 8/368 useless extension candidates. Maximal degree in co-relation 871. Up to 169 conditions per place. [2024-06-27 23:01:39,586 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 26 selfloop transitions, 4 changer transitions 15/59 dead transitions. [2024-06-27 23:01:39,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 59 transitions, 306 flow [2024-06-27 23:01:39,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:01:39,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:01:39,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-27 23:01:39,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6360544217687075 [2024-06-27 23:01:39,588 INFO L175 Difference]: Start difference. First operand has 71 places, 42 transitions, 178 flow. Second operand 7 states and 187 transitions. [2024-06-27 23:01:39,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 59 transitions, 306 flow [2024-06-27 23:01:39,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 59 transitions, 289 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 23:01:39,590 INFO L231 Difference]: Finished difference. Result has 67 places, 39 transitions, 156 flow [2024-06-27 23:01:39,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=67, PETRI_TRANSITIONS=39} [2024-06-27 23:01:39,590 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2024-06-27 23:01:39,591 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 39 transitions, 156 flow [2024-06-27 23:01:39,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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 23:01:39,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:39,591 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 23:01:39,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:01:39,591 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:39,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:39,592 INFO L85 PathProgramCache]: Analyzing trace with hash 497862745, now seen corresponding path program 8 times [2024-06-27 23:01:39,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:39,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114966388] [2024-06-27 23:01:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:39,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:39,642 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 23:01:39,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:39,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114966388] [2024-06-27 23:01:39,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114966388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:39,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:39,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:01:39,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709247677] [2024-06-27 23:01:39,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:39,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:39,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:39,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:39,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:39,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:39,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 39 transitions, 156 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 23:01:39,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:39,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:39,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:39,707 INFO L124 PetriNetUnfolderBase]: 148/370 cut-off events. [2024-06-27 23:01:39,708 INFO L125 PetriNetUnfolderBase]: For 1559/1559 co-relation queries the response was YES. [2024-06-27 23:01:39,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 370 events. 148/370 cut-off events. For 1559/1559 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2120 event pairs, 46 based on Foata normal form. 8/361 useless extension candidates. Maximal degree in co-relation 916. Up to 117 conditions per place. [2024-06-27 23:01:39,710 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 32 selfloop transitions, 4 changer transitions 6/56 dead transitions. [2024-06-27 23:01:39,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 56 transitions, 298 flow [2024-06-27 23:01:39,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:39,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:39,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-06-27 23:01:39,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-06-27 23:01:39,711 INFO L175 Difference]: Start difference. First operand has 67 places, 39 transitions, 156 flow. Second operand 6 states and 165 transitions. [2024-06-27 23:01:39,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 56 transitions, 298 flow [2024-06-27 23:01:39,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 282 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 23:01:39,713 INFO L231 Difference]: Finished difference. Result has 62 places, 37 transitions, 144 flow [2024-06-27 23:01:39,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=62, PETRI_TRANSITIONS=37} [2024-06-27 23:01:39,714 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-06-27 23:01:39,714 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 37 transitions, 144 flow [2024-06-27 23:01:39,714 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 23:01:39,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:39,714 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 23:01:39,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:01:39,715 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:39,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:39,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1588704181, now seen corresponding path program 9 times [2024-06-27 23:01:39,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:39,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255601395] [2024-06-27 23:01:39,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:39,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:39,765 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 23:01:39,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:39,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255601395] [2024-06-27 23:01:39,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255601395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:39,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:39,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:01:39,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298157406] [2024-06-27 23:01:39,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:39,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:39,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:39,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:39,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:39,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:39,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 37 transitions, 144 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 23:01:39,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:39,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:39,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:39,831 INFO L124 PetriNetUnfolderBase]: 104/270 cut-off events. [2024-06-27 23:01:39,831 INFO L125 PetriNetUnfolderBase]: For 911/911 co-relation queries the response was YES. [2024-06-27 23:01:39,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659 conditions, 270 events. 104/270 cut-off events. For 911/911 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1344 event pairs, 20 based on Foata normal form. 8/267 useless extension candidates. Maximal degree in co-relation 638. Up to 117 conditions per place. [2024-06-27 23:01:39,833 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 20 selfloop transitions, 1 changer transitions 16/51 dead transitions. [2024-06-27 23:01:39,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 51 transitions, 248 flow [2024-06-27 23:01:39,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:39,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:39,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-27 23:01:39,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-06-27 23:01:39,834 INFO L175 Difference]: Start difference. First operand has 62 places, 37 transitions, 144 flow. Second operand 6 states and 161 transitions. [2024-06-27 23:01:39,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 51 transitions, 248 flow [2024-06-27 23:01:39,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 51 transitions, 237 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:01:39,836 INFO L231 Difference]: Finished difference. Result has 61 places, 33 transitions, 114 flow [2024-06-27 23:01:39,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=61, PETRI_TRANSITIONS=33} [2024-06-27 23:01:39,836 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-06-27 23:01:39,837 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 33 transitions, 114 flow [2024-06-27 23:01:39,837 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 23:01:39,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:39,837 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 23:01:39,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:01:39,837 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:39,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:39,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1729031401, now seen corresponding path program 10 times [2024-06-27 23:01:39,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:39,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523541476] [2024-06-27 23:01:39,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:39,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:39,889 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 23:01:39,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:39,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523541476] [2024-06-27 23:01:39,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523541476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:39,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:39,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:01:39,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221605689] [2024-06-27 23:01:39,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:39,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:39,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:39,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:39,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:39,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:39,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 33 transitions, 114 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 23:01:39,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:39,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:39,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:39,941 INFO L124 PetriNetUnfolderBase]: 82/219 cut-off events. [2024-06-27 23:01:39,941 INFO L125 PetriNetUnfolderBase]: For 696/696 co-relation queries the response was YES. [2024-06-27 23:01:39,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 219 events. 82/219 cut-off events. For 696/696 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1059 event pairs, 4 based on Foata normal form. 8/223 useless extension candidates. Maximal degree in co-relation 493. Up to 76 conditions per place. [2024-06-27 23:01:39,943 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 20 selfloop transitions, 3 changer transitions 6/43 dead transitions. [2024-06-27 23:01:39,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 43 transitions, 192 flow [2024-06-27 23:01:39,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:39,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:39,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-27 23:01:39,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6150793650793651 [2024-06-27 23:01:39,944 INFO L175 Difference]: Start difference. First operand has 61 places, 33 transitions, 114 flow. Second operand 6 states and 155 transitions. [2024-06-27 23:01:39,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 43 transitions, 192 flow [2024-06-27 23:01:39,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 43 transitions, 181 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:01:39,945 INFO L231 Difference]: Finished difference. Result has 54 places, 31 transitions, 101 flow [2024-06-27 23:01:39,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=101, PETRI_PLACES=54, PETRI_TRANSITIONS=31} [2024-06-27 23:01:39,946 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-06-27 23:01:39,946 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 31 transitions, 101 flow [2024-06-27 23:01:39,946 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 23:01:39,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:39,946 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 23:01:39,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:01:39,946 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:39,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:39,947 INFO L85 PathProgramCache]: Analyzing trace with hash 718196355, now seen corresponding path program 11 times [2024-06-27 23:01:39,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:39,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314667605] [2024-06-27 23:01:39,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:39,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:39,996 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 23:01:39,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:39,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314667605] [2024-06-27 23:01:39,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314667605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:39,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:39,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:01:39,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483295893] [2024-06-27 23:01:39,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:39,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:39,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:39,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:39,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:40,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-06-27 23:01:40,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 31 transitions, 101 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 23:01:40,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:40,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-06-27 23:01:40,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:40,049 INFO L124 PetriNetUnfolderBase]: 38/119 cut-off events. [2024-06-27 23:01:40,050 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-06-27 23:01:40,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 119 events. 38/119 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 394 event pairs, 0 based on Foata normal form. 8/127 useless extension candidates. Maximal degree in co-relation 250. Up to 40 conditions per place. [2024-06-27 23:01:40,050 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2024-06-27 23:01:40,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 38 transitions, 151 flow [2024-06-27 23:01:40,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:40,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:40,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-27 23:01:40,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5992063492063492 [2024-06-27 23:01:40,052 INFO L175 Difference]: Start difference. First operand has 54 places, 31 transitions, 101 flow. Second operand 6 states and 151 transitions. [2024-06-27 23:01:40,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 38 transitions, 151 flow [2024-06-27 23:01:40,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 38 transitions, 136 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 23:01:40,053 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2024-06-27 23:01:40,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2024-06-27 23:01:40,053 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2024-06-27 23:01:40,053 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2024-06-27 23:01:40,054 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 23:01:40,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-27 23:01:40,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-27 23:01:40,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-27 23:01:40,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-27 23:01:40,057 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-27 23:01:40,057 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-27 23:01:40,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:01:40,057 INFO L445 BasicCegarLoop]: Path program histogram: [11, 5, 3, 2, 2, 1, 1, 1] [2024-06-27 23:01:40,059 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 23:01:40,059 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 23:01:40,062 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-27 23:01:40,062 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-27 23:01:40,063 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 11:01:40 BasicIcfg [2024-06-27 23:01:40,063 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 23:01:40,064 INFO L158 Benchmark]: Toolchain (without parser) took 6392.16ms. Allocated memory was 157.3MB in the beginning and 314.6MB in the end (delta: 157.3MB). Free memory was 79.7MB in the beginning and 273.0MB in the end (delta: -193.3MB). Peak memory consumption was 142.8MB. Max. memory is 16.1GB. [2024-06-27 23:01:40,064 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 157.3MB. Free memory is still 107.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:01:40,064 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 157.3MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:01:40,064 INFO L158 Benchmark]: CACSL2BoogieTranslator took 494.33ms. Allocated memory is still 157.3MB. Free memory was 79.4MB in the beginning and 122.3MB in the end (delta: -42.9MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB. [2024-06-27 23:01:40,065 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.41ms. Allocated memory was 157.3MB in the beginning and 218.1MB in the end (delta: 60.8MB). Free memory was 122.3MB in the beginning and 186.0MB in the end (delta: -63.7MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2024-06-27 23:01:40,065 INFO L158 Benchmark]: Boogie Preprocessor took 35.43ms. Allocated memory is still 218.1MB. Free memory was 186.0MB in the beginning and 183.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 23:01:40,065 INFO L158 Benchmark]: RCFGBuilder took 442.40ms. Allocated memory is still 218.1MB. Free memory was 183.9MB in the beginning and 160.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-06-27 23:01:40,065 INFO L158 Benchmark]: TraceAbstraction took 5369.99ms. Allocated memory was 218.1MB in the beginning and 314.6MB in the end (delta: 96.5MB). Free memory was 160.8MB in the beginning and 273.0MB in the end (delta: -112.1MB). Peak memory consumption was 161.7MB. Max. memory is 16.1GB. [2024-06-27 23:01:40,066 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 157.3MB. Free memory is still 107.8MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 157.3MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 494.33ms. Allocated memory is still 157.3MB. Free memory was 79.4MB in the beginning and 122.3MB in the end (delta: -42.9MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.41ms. Allocated memory was 157.3MB in the beginning and 218.1MB in the end (delta: 60.8MB). Free memory was 122.3MB in the beginning and 186.0MB in the end (delta: -63.7MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.43ms. Allocated memory is still 218.1MB. Free memory was 186.0MB in the beginning and 183.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 442.40ms. Allocated memory is still 218.1MB. Free memory was 183.9MB in the beginning and 160.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 5369.99ms. Allocated memory was 218.1MB in the beginning and 314.6MB in the end (delta: 96.5MB). Free memory was 160.8MB in the beginning and 273.0MB in the end (delta: -112.1MB). Peak memory consumption was 161.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 785]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 787]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 788]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 69 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.3s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1124 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 886 mSDsluCounter, 195 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 106 mSDsCounter, 109 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2748 IncrementalHoareTripleChecker+Invalid, 2857 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 109 mSolverCounterUnsat, 89 mSDtfsCounter, 2748 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=385occurred in iteration=15, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 463 NumberOfCodeBlocks, 463 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 437 ConstructedInterpolants, 0 QuantifiedInterpolants, 2676 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 23:01:40,096 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