./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe029_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-nonrel/safe029_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/safe029_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe029_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 [2024-06-28 02:36:39,895 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:36:39,975 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:36:39,984 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:36:39,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:36:40,003 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:36:40,005 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:36:40,006 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:36:40,006 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:36:40,010 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:36:40,010 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:36:40,010 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:36:40,011 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:36:40,012 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:36:40,012 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:36:40,012 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:36:40,013 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:36:40,013 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:36:40,013 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:36:40,013 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:36:40,013 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:36:40,014 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:36:40,014 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:36:40,014 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:36:40,014 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:36:40,015 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:36:40,015 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:36:40,015 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:36:40,015 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:36:40,016 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:36:40,016 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:36:40,017 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:36:40,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:36:40,017 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:36:40,017 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:36:40,017 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:36:40,018 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:36:40,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:36:40,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:36:40,019 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:36:40,019 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:36:40,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:36:40,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:36:40,020 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:36:40,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:36:40,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:36:40,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:36:40,249 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:36:40,250 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:36:40,251 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2024-06-28 02:36:41,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:36:41,525 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:36:41,525 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2024-06-28 02:36:41,536 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9982bb312/92dc47baffd441cbaac21f714a09d885/FLAGa708fb65b [2024-06-28 02:36:41,547 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9982bb312/92dc47baffd441cbaac21f714a09d885 [2024-06-28 02:36:41,549 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:36:41,550 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:36:41,550 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe029_tso.yml/witness.yml [2024-06-28 02:36:41,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:36:41,634 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:36:41,635 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:36:41,635 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:36:41,639 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:36:41,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:36:41" (1/2) ... [2024-06-28 02:36:41,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fd67c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:36:41, skipping insertion in model container [2024-06-28 02:36:41,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:36:41" (1/2) ... [2024-06-28 02:36:41,642 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ed5ad9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:36:41, skipping insertion in model container [2024-06-28 02:36:41,642 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:36:41" (2/2) ... [2024-06-28 02:36:41,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fd67c96 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:36:41, skipping insertion in model container [2024-06-28 02:36:41,643 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:36:41" (2/2) ... [2024-06-28 02:36:41,643 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:36:41,671 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:36:41,672 INFO L97 edCorrectnessWitness]: Location invariant before [L759-L759] (((! multithreaded || ((x == 0 || x == 1) || x == 2)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((0 <= __unbuffered_cnt && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 02:36:41,672 INFO L97 edCorrectnessWitness]: Location invariant before [L760-L760] (((! multithreaded || ((x == 0 || x == 1) || x == 2)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((0 <= __unbuffered_cnt && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 02:36:41,672 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:36:41,673 INFO L106 edCorrectnessWitness]: ghost_update [L757-L757] multithreaded = 1; [2024-06-28 02:36:41,712 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:36:42,013 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:36:42,019 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:36:42,072 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:36:42,096 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:36:42,097 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:36:42 WrapperNode [2024-06-28 02:36:42,097 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:36:42,098 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:36:42,098 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:36:42,098 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:36:42,102 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 28.06 02:36:42" (1/1) ... [2024-06-28 02:36:42,126 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 28.06 02:36:42" (1/1) ... [2024-06-28 02:36:42,148 INFO L138 Inliner]: procedures = 174, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 55 [2024-06-28 02:36:42,151 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:36:42,151 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:36:42,152 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:36:42,152 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:36:42,159 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:36:42" (1/1) ... [2024-06-28 02:36:42,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:36:42" (1/1) ... [2024-06-28 02:36:42,168 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:36:42" (1/1) ... [2024-06-28 02:36:42,188 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 02:36:42,189 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:36:42" (1/1) ... [2024-06-28 02:36:42,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:36:42" (1/1) ... [2024-06-28 02:36:42,198 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:36:42" (1/1) ... [2024-06-28 02:36:42,201 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:36:42" (1/1) ... [2024-06-28 02:36:42,201 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:36:42" (1/1) ... [2024-06-28 02:36:42,205 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:36:42" (1/1) ... [2024-06-28 02:36:42,206 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:36:42,211 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:36:42,211 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:36:42,211 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:36:42,212 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:36:42" (1/1) ... [2024-06-28 02:36:42,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:36:42,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:36:42,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 02:36:42,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 02:36:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:36:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:36:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:36:42,265 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:36:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:36:42,265 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:36:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:36:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:36:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:36:42,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:36:42,266 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:36:42,345 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:36:42,347 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:36:42,458 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:36:42,459 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:36:42,527 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:36:42,533 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:36:42,538 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:36:42 BoogieIcfgContainer [2024-06-28 02:36:42,538 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:36:42,541 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:36:42,541 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:36:42,543 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:36:42,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:36:41" (1/4) ... [2024-06-28 02:36:42,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563fee74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:36:42, skipping insertion in model container [2024-06-28 02:36:42,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:36:41" (2/4) ... [2024-06-28 02:36:42,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563fee74 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:36:42, skipping insertion in model container [2024-06-28 02:36:42,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:36:42" (3/4) ... [2024-06-28 02:36:42,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563fee74 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:36:42, skipping insertion in model container [2024-06-28 02:36:42,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:36:42" (4/4) ... [2024-06-28 02:36:42,545 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2024-06-28 02:36:42,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:36:42,559 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 02:36:42,559 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:36:42,586 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:36:42,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 29 transitions, 66 flow [2024-06-28 02:36:42,639 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2024-06-28 02:36:42,639 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:36:42,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 0/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:36:42,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 29 transitions, 66 flow [2024-06-28 02:36:42,642 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 48 flow [2024-06-28 02:36:42,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:36:42,654 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;@327139b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:36:42,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 02:36:42,664 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:36:42,664 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:36:42,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:36:42,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:42,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:36:42,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:42,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:42,672 INFO L85 PathProgramCache]: Analyzing trace with hash 185982936, now seen corresponding path program 1 times [2024-06-28 02:36:42,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:42,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139244194] [2024-06-28 02:36:42,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:42,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:42,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:42,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139244194] [2024-06-28 02:36:42,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139244194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:42,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:42,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:36:42,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596076414] [2024-06-28 02:36:42,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:42,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:36:42,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:43,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:36:43,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:36:43,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:43,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:43,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:43,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:43,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:43,086 INFO L124 PetriNetUnfolderBase]: 109/221 cut-off events. [2024-06-28 02:36:43,087 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-28 02:36:43,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 221 events. 109/221 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 809 event pairs, 61 based on Foata normal form. 1/212 useless extension candidates. Maximal degree in co-relation 429. Up to 198 conditions per place. [2024-06-28 02:36:43,093 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 19 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-06-28 02:36:43,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 107 flow [2024-06-28 02:36:43,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:36:43,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:36:43,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-06-28 02:36:43,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6551724137931034 [2024-06-28 02:36:43,118 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 57 transitions. [2024-06-28 02:36:43,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 107 flow [2024-06-28 02:36:43,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:36:43,122 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 67 flow [2024-06-28 02:36:43,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-06-28 02:36:43,126 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-06-28 02:36:43,126 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 67 flow [2024-06-28 02:36:43,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:43,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:43,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:43,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:36:43,127 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:43,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:43,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1658217183, now seen corresponding path program 1 times [2024-06-28 02:36:43,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:43,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787910961] [2024-06-28 02:36:43,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:43,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:43,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:43,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:43,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787910961] [2024-06-28 02:36:43,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787910961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:43,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:43,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:36:43,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137818368] [2024-06-28 02:36:43,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:43,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:36:43,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:43,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:36:43,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:36:43,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:43,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:43,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:43,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:43,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:43,309 INFO L124 PetriNetUnfolderBase]: 106/216 cut-off events. [2024-06-28 02:36:43,309 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 02:36:43,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 216 events. 106/216 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 793 event pairs, 46 based on Foata normal form. 2/213 useless extension candidates. Maximal degree in co-relation 482. Up to 184 conditions per place. [2024-06-28 02:36:43,311 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 23 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2024-06-28 02:36:43,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 149 flow [2024-06-28 02:36:43,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:36:43,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:36:43,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-06-28 02:36:43,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6379310344827587 [2024-06-28 02:36:43,315 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 67 flow. Second operand 4 states and 74 transitions. [2024-06-28 02:36:43,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 149 flow [2024-06-28 02:36:43,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:36:43,319 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 91 flow [2024-06-28 02:36:43,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2024-06-28 02:36:43,320 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-06-28 02:36:43,320 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 91 flow [2024-06-28 02:36:43,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:43,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:43,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:43,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:36:43,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:43,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:43,326 INFO L85 PathProgramCache]: Analyzing trace with hash 134875857, now seen corresponding path program 1 times [2024-06-28 02:36:43,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:43,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431843580] [2024-06-28 02:36:43,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:43,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:43,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:43,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:43,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431843580] [2024-06-28 02:36:43,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431843580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:43,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:43,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:36:43,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695415502] [2024-06-28 02:36:43,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:43,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:36:43,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:43,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:36:43,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:36:43,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:43,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:43,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:43,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:43,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:43,507 INFO L124 PetriNetUnfolderBase]: 116/239 cut-off events. [2024-06-28 02:36:43,507 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-06-28 02:36:43,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 239 events. 116/239 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 913 event pairs, 27 based on Foata normal form. 4/240 useless extension candidates. Maximal degree in co-relation 582. Up to 143 conditions per place. [2024-06-28 02:36:43,514 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 33 selfloop transitions, 14 changer transitions 0/52 dead transitions. [2024-06-28 02:36:43,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 263 flow [2024-06-28 02:36:43,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:36:43,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:36:43,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-06-28 02:36:43,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7034482758620689 [2024-06-28 02:36:43,519 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 91 flow. Second operand 5 states and 102 transitions. [2024-06-28 02:36:43,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 263 flow [2024-06-28 02:36:43,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 52 transitions, 254 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 02:36:43,564 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 179 flow [2024-06-28 02:36:43,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2024-06-28 02:36:43,565 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 9 predicate places. [2024-06-28 02:36:43,565 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 179 flow [2024-06-28 02:36:43,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:43,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:43,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:43,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:36:43,567 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:43,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:43,567 INFO L85 PathProgramCache]: Analyzing trace with hash -948063814, now seen corresponding path program 1 times [2024-06-28 02:36:43,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:43,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158738029] [2024-06-28 02:36:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:43,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:43,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:43,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158738029] [2024-06-28 02:36:43,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158738029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:43,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:43,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:36:43,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699132323] [2024-06-28 02:36:43,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:43,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:36:43,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:43,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:36:43,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:36:43,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:43,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 179 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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) [2024-06-28 02:36:43,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:43,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:43,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:43,802 INFO L124 PetriNetUnfolderBase]: 131/280 cut-off events. [2024-06-28 02:36:43,802 INFO L125 PetriNetUnfolderBase]: For 359/359 co-relation queries the response was YES. [2024-06-28 02:36:43,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 280 events. 131/280 cut-off events. For 359/359 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1149 event pairs, 17 based on Foata normal form. 14/291 useless extension candidates. Maximal degree in co-relation 865. Up to 114 conditions per place. [2024-06-28 02:36:43,803 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 36 selfloop transitions, 16 changer transitions 0/57 dead transitions. [2024-06-28 02:36:43,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 353 flow [2024-06-28 02:36:43,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:36:43,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:36:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-28 02:36:43,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6781609195402298 [2024-06-28 02:36:43,805 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 179 flow. Second operand 6 states and 118 transitions. [2024-06-28 02:36:43,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 353 flow [2024-06-28 02:36:43,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 57 transitions, 349 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 02:36:43,808 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 213 flow [2024-06-28 02:36:43,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=213, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2024-06-28 02:36:43,809 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 14 predicate places. [2024-06-28 02:36:43,813 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 213 flow [2024-06-28 02:36:43,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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) [2024-06-28 02:36:43,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:43,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:43,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:36:43,813 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:43,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:43,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1622111743, now seen corresponding path program 1 times [2024-06-28 02:36:43,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:43,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606657889] [2024-06-28 02:36:43,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:43,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:43,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:43,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606657889] [2024-06-28 02:36:43,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606657889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:43,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:43,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:36:43,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321122754] [2024-06-28 02:36:43,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:43,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:36:43,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:43,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:36:43,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:36:43,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:43,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:43,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:43,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:43,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:43,964 INFO L124 PetriNetUnfolderBase]: 129/279 cut-off events. [2024-06-28 02:36:43,964 INFO L125 PetriNetUnfolderBase]: For 508/508 co-relation queries the response was YES. [2024-06-28 02:36:43,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 279 events. 129/279 cut-off events. For 508/508 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1155 event pairs, 33 based on Foata normal form. 1/280 useless extension candidates. Maximal degree in co-relation 961. Up to 245 conditions per place. [2024-06-28 02:36:43,967 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 33 selfloop transitions, 5 changer transitions 0/43 dead transitions. [2024-06-28 02:36:43,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 319 flow [2024-06-28 02:36:43,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:36:43,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:36:43,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-06-28 02:36:43,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5948275862068966 [2024-06-28 02:36:43,968 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 213 flow. Second operand 4 states and 69 transitions. [2024-06-28 02:36:43,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 319 flow [2024-06-28 02:36:43,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 279 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 02:36:43,971 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 210 flow [2024-06-28 02:36:43,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2024-06-28 02:36:43,972 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 14 predicate places. [2024-06-28 02:36:43,972 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 210 flow [2024-06-28 02:36:43,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:43,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:43,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:43,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:36:43,973 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:43,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:43,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1253481203, now seen corresponding path program 1 times [2024-06-28 02:36:43,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:43,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608919329] [2024-06-28 02:36:43,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:43,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:44,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:44,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608919329] [2024-06-28 02:36:44,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608919329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:44,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:44,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:36:44,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896796325] [2024-06-28 02:36:44,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:44,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:36:44,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:44,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:36:44,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:36:44,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:44,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:44,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:44,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:44,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:44,098 INFO L124 PetriNetUnfolderBase]: 130/284 cut-off events. [2024-06-28 02:36:44,098 INFO L125 PetriNetUnfolderBase]: For 524/524 co-relation queries the response was YES. [2024-06-28 02:36:44,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 946 conditions, 284 events. 130/284 cut-off events. For 524/524 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1222 event pairs, 36 based on Foata normal form. 3/286 useless extension candidates. Maximal degree in co-relation 925. Up to 189 conditions per place. [2024-06-28 02:36:44,100 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 27 selfloop transitions, 17 changer transitions 0/49 dead transitions. [2024-06-28 02:36:44,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 352 flow [2024-06-28 02:36:44,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:36:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:36:44,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-28 02:36:44,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6482758620689655 [2024-06-28 02:36:44,102 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 210 flow. Second operand 5 states and 94 transitions. [2024-06-28 02:36:44,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 352 flow [2024-06-28 02:36:44,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 337 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 02:36:44,105 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 255 flow [2024-06-28 02:36:44,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2024-06-28 02:36:44,106 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2024-06-28 02:36:44,106 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 255 flow [2024-06-28 02:36:44,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:44,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:44,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:44,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:36:44,107 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:44,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:44,107 INFO L85 PathProgramCache]: Analyzing trace with hash -184213890, now seen corresponding path program 1 times [2024-06-28 02:36:44,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:44,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494741185] [2024-06-28 02:36:44,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:44,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:44,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:44,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:44,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494741185] [2024-06-28 02:36:44,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494741185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:44,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:44,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:36:44,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832237689] [2024-06-28 02:36:44,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:44,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:36:44,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:44,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:36:44,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:36:44,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:44,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:44,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:44,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:44,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:44,232 INFO L124 PetriNetUnfolderBase]: 130/282 cut-off events. [2024-06-28 02:36:44,232 INFO L125 PetriNetUnfolderBase]: For 621/621 co-relation queries the response was YES. [2024-06-28 02:36:44,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1024 conditions, 282 events. 130/282 cut-off events. For 621/621 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1172 event pairs, 32 based on Foata normal form. 2/281 useless extension candidates. Maximal degree in co-relation 1002. Up to 186 conditions per place. [2024-06-28 02:36:44,234 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 31 selfloop transitions, 18 changer transitions 0/54 dead transitions. [2024-06-28 02:36:44,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 54 transitions, 422 flow [2024-06-28 02:36:44,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:36:44,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:36:44,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-06-28 02:36:44,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6620689655172414 [2024-06-28 02:36:44,235 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 255 flow. Second operand 5 states and 96 transitions. [2024-06-28 02:36:44,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 54 transitions, 422 flow [2024-06-28 02:36:44,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 405 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 02:36:44,238 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 302 flow [2024-06-28 02:36:44,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=302, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2024-06-28 02:36:44,238 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 21 predicate places. [2024-06-28 02:36:44,238 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 302 flow [2024-06-28 02:36:44,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:44,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:44,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:44,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:36:44,239 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:44,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:44,240 INFO L85 PathProgramCache]: Analyzing trace with hash 223760288, now seen corresponding path program 2 times [2024-06-28 02:36:44,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:44,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092389965] [2024-06-28 02:36:44,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:44,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:44,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:44,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092389965] [2024-06-28 02:36:44,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092389965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:44,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:44,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:36:44,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177556327] [2024-06-28 02:36:44,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:44,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:36:44,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:44,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:36:44,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:36:44,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:44,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 302 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:44,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:44,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:44,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:44,339 INFO L124 PetriNetUnfolderBase]: 120/255 cut-off events. [2024-06-28 02:36:44,339 INFO L125 PetriNetUnfolderBase]: For 841/841 co-relation queries the response was YES. [2024-06-28 02:36:44,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 255 events. 120/255 cut-off events. For 841/841 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1006 event pairs, 36 based on Foata normal form. 2/256 useless extension candidates. Maximal degree in co-relation 938. Up to 168 conditions per place. [2024-06-28 02:36:44,341 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 27 selfloop transitions, 17 changer transitions 1/50 dead transitions. [2024-06-28 02:36:44,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 422 flow [2024-06-28 02:36:44,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:36:44,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:36:44,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-06-28 02:36:44,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6344827586206897 [2024-06-28 02:36:44,342 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 302 flow. Second operand 5 states and 92 transitions. [2024-06-28 02:36:44,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 422 flow [2024-06-28 02:36:44,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 398 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 02:36:44,345 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 310 flow [2024-06-28 02:36:44,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-06-28 02:36:44,345 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2024-06-28 02:36:44,346 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 310 flow [2024-06-28 02:36:44,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:44,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:44,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:44,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:36:44,346 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:44,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:44,347 INFO L85 PathProgramCache]: Analyzing trace with hash 289248518, now seen corresponding path program 1 times [2024-06-28 02:36:44,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:44,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348644979] [2024-06-28 02:36:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:44,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:44,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:44,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348644979] [2024-06-28 02:36:44,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348644979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:44,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:44,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:36:44,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029396456] [2024-06-28 02:36:44,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:44,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:36:44,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:44,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:36:44,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:36:44,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:44,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:44,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:44,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:44,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:44,492 INFO L124 PetriNetUnfolderBase]: 127/274 cut-off events. [2024-06-28 02:36:44,493 INFO L125 PetriNetUnfolderBase]: For 1311/1311 co-relation queries the response was YES. [2024-06-28 02:36:44,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 274 events. 127/274 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1130 event pairs, 38 based on Foata normal form. 12/285 useless extension candidates. Maximal degree in co-relation 995. Up to 145 conditions per place. [2024-06-28 02:36:44,494 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 27 selfloop transitions, 19 changer transitions 4/55 dead transitions. [2024-06-28 02:36:44,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 464 flow [2024-06-28 02:36:44,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:36:44,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:36:44,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-28 02:36:44,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.632183908045977 [2024-06-28 02:36:44,495 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 310 flow. Second operand 6 states and 110 transitions. [2024-06-28 02:36:44,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 464 flow [2024-06-28 02:36:44,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 401 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 02:36:44,498 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 293 flow [2024-06-28 02:36:44,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-06-28 02:36:44,499 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2024-06-28 02:36:44,499 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 293 flow [2024-06-28 02:36:44,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:44,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:44,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:44,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:36:44,501 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:44,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:44,501 INFO L85 PathProgramCache]: Analyzing trace with hash -305271562, now seen corresponding path program 1 times [2024-06-28 02:36:44,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:44,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791691350] [2024-06-28 02:36:44,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:44,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:44,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:44,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791691350] [2024-06-28 02:36:44,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791691350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:44,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:44,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:36:44,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732443279] [2024-06-28 02:36:44,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:44,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:36:44,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:44,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:36:44,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:36:44,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:44,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 293 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:44,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:44,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:44,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:44,622 INFO L124 PetriNetUnfolderBase]: 124/274 cut-off events. [2024-06-28 02:36:44,622 INFO L125 PetriNetUnfolderBase]: For 1040/1042 co-relation queries the response was YES. [2024-06-28 02:36:44,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 274 events. 124/274 cut-off events. For 1040/1042 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1141 event pairs, 40 based on Foata normal form. 3/277 useless extension candidates. Maximal degree in co-relation 999. Up to 183 conditions per place. [2024-06-28 02:36:44,624 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 34 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2024-06-28 02:36:44,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 449 flow [2024-06-28 02:36:44,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:36:44,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:36:44,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-28 02:36:44,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6413793103448275 [2024-06-28 02:36:44,625 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 293 flow. Second operand 5 states and 93 transitions. [2024-06-28 02:36:44,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 449 flow [2024-06-28 02:36:44,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 388 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 02:36:44,628 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 283 flow [2024-06-28 02:36:44,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=283, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-06-28 02:36:44,630 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2024-06-28 02:36:44,632 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 283 flow [2024-06-28 02:36:44,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:44,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:44,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:44,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:36:44,632 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:44,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:44,633 INFO L85 PathProgramCache]: Analyzing trace with hash -305784922, now seen corresponding path program 2 times [2024-06-28 02:36:44,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:44,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593980737] [2024-06-28 02:36:44,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:44,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:44,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:44,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593980737] [2024-06-28 02:36:44,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593980737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:44,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:44,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:36:44,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600666225] [2024-06-28 02:36:44,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:44,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:36:44,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:44,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:36:44,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:36:44,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:44,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 283 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:44,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:44,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:44,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:44,741 INFO L124 PetriNetUnfolderBase]: 122/274 cut-off events. [2024-06-28 02:36:44,741 INFO L125 PetriNetUnfolderBase]: For 1041/1041 co-relation queries the response was YES. [2024-06-28 02:36:44,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 274 events. 122/274 cut-off events. For 1041/1041 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1134 event pairs, 45 based on Foata normal form. 1/274 useless extension candidates. Maximal degree in co-relation 945. Up to 181 conditions per place. [2024-06-28 02:36:44,743 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 30 selfloop transitions, 15 changer transitions 0/50 dead transitions. [2024-06-28 02:36:44,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 387 flow [2024-06-28 02:36:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:36:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:36:44,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-28 02:36:44,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6137931034482759 [2024-06-28 02:36:44,745 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 283 flow. Second operand 5 states and 89 transitions. [2024-06-28 02:36:44,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 387 flow [2024-06-28 02:36:44,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 50 transitions, 357 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:36:44,748 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 288 flow [2024-06-28 02:36:44,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=288, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-06-28 02:36:44,749 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 26 predicate places. [2024-06-28 02:36:44,749 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 288 flow [2024-06-28 02:36:44,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:44,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:44,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:44,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:36:44,749 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:44,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:44,750 INFO L85 PathProgramCache]: Analyzing trace with hash 980431817, now seen corresponding path program 1 times [2024-06-28 02:36:44,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:44,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782480454] [2024-06-28 02:36:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:44,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:44,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:44,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:44,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782480454] [2024-06-28 02:36:44,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782480454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:44,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:44,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:36:44,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043015972] [2024-06-28 02:36:44,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:44,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:36:44,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:44,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:36:44,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:36:44,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:44,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:44,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:44,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:44,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:44,894 INFO L124 PetriNetUnfolderBase]: 148/323 cut-off events. [2024-06-28 02:36:44,894 INFO L125 PetriNetUnfolderBase]: For 1736/1736 co-relation queries the response was YES. [2024-06-28 02:36:44,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1228 conditions, 323 events. 148/323 cut-off events. For 1736/1736 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1395 event pairs, 39 based on Foata normal form. 2/322 useless extension candidates. Maximal degree in co-relation 1202. Up to 124 conditions per place. [2024-06-28 02:36:44,896 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 37 selfloop transitions, 19 changer transitions 1/62 dead transitions. [2024-06-28 02:36:44,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 484 flow [2024-06-28 02:36:44,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:36:44,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:36:44,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-28 02:36:44,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6379310344827587 [2024-06-28 02:36:44,897 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 288 flow. Second operand 6 states and 111 transitions. [2024-06-28 02:36:44,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 484 flow [2024-06-28 02:36:44,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 436 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 02:36:44,900 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 292 flow [2024-06-28 02:36:44,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-06-28 02:36:44,902 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 27 predicate places. [2024-06-28 02:36:44,902 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 292 flow [2024-06-28 02:36:44,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:44,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:44,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:44,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:36:44,905 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:44,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:44,906 INFO L85 PathProgramCache]: Analyzing trace with hash 18321643, now seen corresponding path program 2 times [2024-06-28 02:36:44,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:44,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886787562] [2024-06-28 02:36:44,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:44,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:45,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:45,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886787562] [2024-06-28 02:36:45,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886787562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:45,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:45,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:36:45,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304709358] [2024-06-28 02:36:45,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:45,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:36:45,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:45,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:36:45,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:36:45,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:45,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:45,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:45,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:45,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:45,082 INFO L124 PetriNetUnfolderBase]: 145/320 cut-off events. [2024-06-28 02:36:45,082 INFO L125 PetriNetUnfolderBase]: For 1740/1740 co-relation queries the response was YES. [2024-06-28 02:36:45,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1212 conditions, 320 events. 145/320 cut-off events. For 1740/1740 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1404 event pairs, 49 based on Foata normal form. 2/319 useless extension candidates. Maximal degree in co-relation 1186. Up to 224 conditions per place. [2024-06-28 02:36:45,084 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 32 selfloop transitions, 19 changer transitions 0/56 dead transitions. [2024-06-28 02:36:45,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 420 flow [2024-06-28 02:36:45,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:36:45,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:36:45,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-28 02:36:45,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2024-06-28 02:36:45,085 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 292 flow. Second operand 6 states and 108 transitions. [2024-06-28 02:36:45,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 420 flow [2024-06-28 02:36:45,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 382 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:36:45,090 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 296 flow [2024-06-28 02:36:45,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2024-06-28 02:36:45,091 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 30 predicate places. [2024-06-28 02:36:45,091 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 296 flow [2024-06-28 02:36:45,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:45,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:45,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:45,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:36:45,092 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:45,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:45,092 INFO L85 PathProgramCache]: Analyzing trace with hash 490441381, now seen corresponding path program 1 times [2024-06-28 02:36:45,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:45,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542672236] [2024-06-28 02:36:45,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:45,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:45,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:45,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:45,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542672236] [2024-06-28 02:36:45,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542672236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:45,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:45,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:36:45,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364073158] [2024-06-28 02:36:45,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:45,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:36:45,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:45,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:36:45,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:36:45,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:45,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 296 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:45,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:45,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:45,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:45,220 INFO L124 PetriNetUnfolderBase]: 142/317 cut-off events. [2024-06-28 02:36:45,221 INFO L125 PetriNetUnfolderBase]: For 1929/1929 co-relation queries the response was YES. [2024-06-28 02:36:45,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1188 conditions, 317 events. 142/317 cut-off events. For 1929/1929 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1392 event pairs, 52 based on Foata normal form. 2/318 useless extension candidates. Maximal degree in co-relation 1161. Up to 219 conditions per place. [2024-06-28 02:36:45,222 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 30 selfloop transitions, 19 changer transitions 0/54 dead transitions. [2024-06-28 02:36:45,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 54 transitions, 422 flow [2024-06-28 02:36:45,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:36:45,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:36:45,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 02:36:45,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.603448275862069 [2024-06-28 02:36:45,224 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 296 flow. Second operand 6 states and 105 transitions. [2024-06-28 02:36:45,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 54 transitions, 422 flow [2024-06-28 02:36:45,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 54 transitions, 372 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 02:36:45,227 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 300 flow [2024-06-28 02:36:45,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-06-28 02:36:45,227 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 31 predicate places. [2024-06-28 02:36:45,227 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 300 flow [2024-06-28 02:36:45,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:45,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:45,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:45,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:36:45,228 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:45,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:45,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2001445807, now seen corresponding path program 2 times [2024-06-28 02:36:45,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:45,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589696880] [2024-06-28 02:36:45,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:45,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:45,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:45,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589696880] [2024-06-28 02:36:45,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589696880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:45,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:45,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:36:45,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506159598] [2024-06-28 02:36:45,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:45,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:36:45,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:45,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:36:45,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:36:45,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:45,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:45,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:45,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:45,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:45,347 INFO L124 PetriNetUnfolderBase]: 139/312 cut-off events. [2024-06-28 02:36:45,347 INFO L125 PetriNetUnfolderBase]: For 1915/1915 co-relation queries the response was YES. [2024-06-28 02:36:45,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 312 events. 139/312 cut-off events. For 1915/1915 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1368 event pairs, 48 based on Foata normal form. 2/313 useless extension candidates. Maximal degree in co-relation 1109. Up to 129 conditions per place. [2024-06-28 02:36:45,349 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 34 selfloop transitions, 19 changer transitions 1/59 dead transitions. [2024-06-28 02:36:45,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 468 flow [2024-06-28 02:36:45,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:36:45,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:36:45,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-28 02:36:45,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2024-06-28 02:36:45,350 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 300 flow. Second operand 6 states and 108 transitions. [2024-06-28 02:36:45,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 468 flow [2024-06-28 02:36:45,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 424 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 02:36:45,353 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 298 flow [2024-06-28 02:36:45,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2024-06-28 02:36:45,354 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 33 predicate places. [2024-06-28 02:36:45,354 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 298 flow [2024-06-28 02:36:45,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:45,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:45,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:45,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:36:45,355 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:45,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:45,355 INFO L85 PathProgramCache]: Analyzing trace with hash 328616029, now seen corresponding path program 1 times [2024-06-28 02:36:45,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:45,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064701189] [2024-06-28 02:36:45,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:45,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:45,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:45,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064701189] [2024-06-28 02:36:45,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064701189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:45,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:45,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:36:45,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386993816] [2024-06-28 02:36:45,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:45,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:36:45,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:45,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:36:45,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:36:45,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:45,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:45,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:45,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:45,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:45,476 INFO L124 PetriNetUnfolderBase]: 147/341 cut-off events. [2024-06-28 02:36:45,476 INFO L125 PetriNetUnfolderBase]: For 2616/2616 co-relation queries the response was YES. [2024-06-28 02:36:45,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 341 events. 147/341 cut-off events. For 2616/2616 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1592 event pairs, 59 based on Foata normal form. 6/346 useless extension candidates. Maximal degree in co-relation 1172. Up to 207 conditions per place. [2024-06-28 02:36:45,477 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 31 selfloop transitions, 9 changer transitions 11/56 dead transitions. [2024-06-28 02:36:45,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 56 transitions, 424 flow [2024-06-28 02:36:45,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:36:45,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:36:45,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-28 02:36:45,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-06-28 02:36:45,479 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 298 flow. Second operand 6 states and 99 transitions. [2024-06-28 02:36:45,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 56 transitions, 424 flow [2024-06-28 02:36:45,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 367 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 02:36:45,482 INFO L231 Difference]: Finished difference. Result has 62 places, 44 transitions, 251 flow [2024-06-28 02:36:45,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=251, PETRI_PLACES=62, PETRI_TRANSITIONS=44} [2024-06-28 02:36:45,483 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 34 predicate places. [2024-06-28 02:36:45,483 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 44 transitions, 251 flow [2024-06-28 02:36:45,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:45,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:45,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:45,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:36:45,484 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:45,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:45,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1525185541, now seen corresponding path program 2 times [2024-06-28 02:36:45,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:45,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352804975] [2024-06-28 02:36:45,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:45,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:45,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:45,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:45,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352804975] [2024-06-28 02:36:45,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352804975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:45,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:45,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:36:45,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975944543] [2024-06-28 02:36:45,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:45,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:36:45,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:45,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:36:45,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:36:45,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:45,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 44 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:45,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:45,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:45,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:45,614 INFO L124 PetriNetUnfolderBase]: 124/289 cut-off events. [2024-06-28 02:36:45,614 INFO L125 PetriNetUnfolderBase]: For 2025/2025 co-relation queries the response was YES. [2024-06-28 02:36:45,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 937 conditions, 289 events. 124/289 cut-off events. For 2025/2025 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1268 event pairs, 35 based on Foata normal form. 6/294 useless extension candidates. Maximal degree in co-relation 908. Up to 117 conditions per place. [2024-06-28 02:36:45,616 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 23 selfloop transitions, 16 changer transitions 13/57 dead transitions. [2024-06-28 02:36:45,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 57 transitions, 387 flow [2024-06-28 02:36:45,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:36:45,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:36:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 02:36:45,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2024-06-28 02:36:45,617 INFO L175 Difference]: Start difference. First operand has 62 places, 44 transitions, 251 flow. Second operand 6 states and 106 transitions. [2024-06-28 02:36:45,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 57 transitions, 387 flow [2024-06-28 02:36:45,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 373 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 02:36:45,620 INFO L231 Difference]: Finished difference. Result has 61 places, 40 transitions, 247 flow [2024-06-28 02:36:45,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=247, PETRI_PLACES=61, PETRI_TRANSITIONS=40} [2024-06-28 02:36:45,620 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 33 predicate places. [2024-06-28 02:36:45,621 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 40 transitions, 247 flow [2024-06-28 02:36:45,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:45,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:45,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:45,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:36:45,621 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:45,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:45,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1291342115, now seen corresponding path program 3 times [2024-06-28 02:36:45,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:45,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082939778] [2024-06-28 02:36:45,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:45,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:45,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:45,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082939778] [2024-06-28 02:36:45,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082939778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:45,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:45,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:36:45,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094517881] [2024-06-28 02:36:45,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:45,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:36:45,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:45,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:36:45,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:36:45,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:45,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 40 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:45,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:45,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:45,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:45,733 INFO L124 PetriNetUnfolderBase]: 109/250 cut-off events. [2024-06-28 02:36:45,734 INFO L125 PetriNetUnfolderBase]: For 2510/2514 co-relation queries the response was YES. [2024-06-28 02:36:45,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 250 events. 109/250 cut-off events. For 2510/2514 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1057 event pairs, 41 based on Foata normal form. 6/256 useless extension candidates. Maximal degree in co-relation 899. Up to 82 conditions per place. [2024-06-28 02:36:45,735 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 30 selfloop transitions, 10 changer transitions 6/51 dead transitions. [2024-06-28 02:36:45,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 51 transitions, 395 flow [2024-06-28 02:36:45,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:36:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:36:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 02:36:45,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2024-06-28 02:36:45,736 INFO L175 Difference]: Start difference. First operand has 61 places, 40 transitions, 247 flow. Second operand 6 states and 100 transitions. [2024-06-28 02:36:45,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 51 transitions, 395 flow [2024-06-28 02:36:45,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 51 transitions, 355 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:36:45,739 INFO L231 Difference]: Finished difference. Result has 59 places, 38 transitions, 221 flow [2024-06-28 02:36:45,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=59, PETRI_TRANSITIONS=38} [2024-06-28 02:36:45,740 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 31 predicate places. [2024-06-28 02:36:45,740 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 38 transitions, 221 flow [2024-06-28 02:36:45,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:45,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:45,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:45,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:36:45,741 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:45,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:45,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1806870503, now seen corresponding path program 1 times [2024-06-28 02:36:45,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:45,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63858012] [2024-06-28 02:36:45,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:45,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:45,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:45,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:45,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63858012] [2024-06-28 02:36:45,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63858012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:45,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:45,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:36:45,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336769943] [2024-06-28 02:36:45,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:45,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:36:45,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:45,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:36:45,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:36:45,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:45,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 38 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:45,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:45,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:45,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:45,869 INFO L124 PetriNetUnfolderBase]: 97/222 cut-off events. [2024-06-28 02:36:45,870 INFO L125 PetriNetUnfolderBase]: For 2370/2372 co-relation queries the response was YES. [2024-06-28 02:36:45,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 222 events. 97/222 cut-off events. For 2370/2372 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 892 event pairs, 41 based on Foata normal form. 10/232 useless extension candidates. Maximal degree in co-relation 793. Up to 122 conditions per place. [2024-06-28 02:36:45,871 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 24 selfloop transitions, 6 changer transitions 11/46 dead transitions. [2024-06-28 02:36:45,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 46 transitions, 323 flow [2024-06-28 02:36:45,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:36:45,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:36:45,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-06-28 02:36:45,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-06-28 02:36:45,872 INFO L175 Difference]: Start difference. First operand has 59 places, 38 transitions, 221 flow. Second operand 6 states and 98 transitions. [2024-06-28 02:36:45,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 46 transitions, 323 flow [2024-06-28 02:36:45,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 46 transitions, 303 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 02:36:45,875 INFO L231 Difference]: Finished difference. Result has 58 places, 33 transitions, 183 flow [2024-06-28 02:36:45,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=183, PETRI_PLACES=58, PETRI_TRANSITIONS=33} [2024-06-28 02:36:45,875 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 30 predicate places. [2024-06-28 02:36:45,876 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 33 transitions, 183 flow [2024-06-28 02:36:45,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:45,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:45,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:45,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:36:45,876 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:45,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:45,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1801298873, now seen corresponding path program 2 times [2024-06-28 02:36:45,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:45,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001770371] [2024-06-28 02:36:45,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:45,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:45,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:45,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:45,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001770371] [2024-06-28 02:36:45,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001770371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:45,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:45,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:36:45,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317257570] [2024-06-28 02:36:45,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:45,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:36:45,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:45,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:36:45,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:36:45,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:45,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 33 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:45,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:45,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:45,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:46,005 INFO L124 PetriNetUnfolderBase]: 84/197 cut-off events. [2024-06-28 02:36:46,005 INFO L125 PetriNetUnfolderBase]: For 1855/1855 co-relation queries the response was YES. [2024-06-28 02:36:46,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 197 events. 84/197 cut-off events. For 1855/1855 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 724 event pairs, 33 based on Foata normal form. 6/203 useless extension candidates. Maximal degree in co-relation 693. Up to 62 conditions per place. [2024-06-28 02:36:46,007 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 24 selfloop transitions, 10 changer transitions 5/44 dead transitions. [2024-06-28 02:36:46,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 44 transitions, 313 flow [2024-06-28 02:36:46,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:36:46,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:36:46,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 02:36:46,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2024-06-28 02:36:46,008 INFO L175 Difference]: Start difference. First operand has 58 places, 33 transitions, 183 flow. Second operand 6 states and 100 transitions. [2024-06-28 02:36:46,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 44 transitions, 313 flow [2024-06-28 02:36:46,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 44 transitions, 289 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:36:46,010 INFO L231 Difference]: Finished difference. Result has 54 places, 32 transitions, 183 flow [2024-06-28 02:36:46,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=183, PETRI_PLACES=54, PETRI_TRANSITIONS=32} [2024-06-28 02:36:46,011 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 26 predicate places. [2024-06-28 02:36:46,011 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 32 transitions, 183 flow [2024-06-28 02:36:46,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:46,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:46,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:46,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:36:46,012 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:46,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:46,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1801508123, now seen corresponding path program 3 times [2024-06-28 02:36:46,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:46,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853788482] [2024-06-28 02:36:46,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:46,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:46,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:46,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:46,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853788482] [2024-06-28 02:36:46,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853788482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:46,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:46,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:36:46,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251467353] [2024-06-28 02:36:46,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:46,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:36:46,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:46,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:36:46,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:36:46,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:46,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 32 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:46,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:46,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:46,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:46,115 INFO L124 PetriNetUnfolderBase]: 62/151 cut-off events. [2024-06-28 02:36:46,115 INFO L125 PetriNetUnfolderBase]: For 997/997 co-relation queries the response was YES. [2024-06-28 02:36:46,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 151 events. 62/151 cut-off events. For 997/997 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 498 event pairs, 27 based on Foata normal form. 8/159 useless extension candidates. Maximal degree in co-relation 487. Up to 68 conditions per place. [2024-06-28 02:36:46,116 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 15 selfloop transitions, 5 changer transitions 14/39 dead transitions. [2024-06-28 02:36:46,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 39 transitions, 267 flow [2024-06-28 02:36:46,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:36:46,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:36:46,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-28 02:36:46,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-06-28 02:36:46,117 INFO L175 Difference]: Start difference. First operand has 54 places, 32 transitions, 183 flow. Second operand 6 states and 96 transitions. [2024-06-28 02:36:46,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 39 transitions, 267 flow [2024-06-28 02:36:46,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 39 transitions, 245 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 02:36:46,119 INFO L231 Difference]: Finished difference. Result has 54 places, 23 transitions, 119 flow [2024-06-28 02:36:46,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=119, PETRI_PLACES=54, PETRI_TRANSITIONS=23} [2024-06-28 02:36:46,119 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 26 predicate places. [2024-06-28 02:36:46,119 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 23 transitions, 119 flow [2024-06-28 02:36:46,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:46,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:46,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:46,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:36:46,120 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:46,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:46,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2062281001, now seen corresponding path program 4 times [2024-06-28 02:36:46,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:46,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693494822] [2024-06-28 02:36:46,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:46,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:46,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:46,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:46,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693494822] [2024-06-28 02:36:46,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693494822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:46,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:46,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:36:46,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190217531] [2024-06-28 02:36:46,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:46,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:36:46,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:46,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:36:46,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:36:46,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:46,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 23 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:46,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:46,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:46,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:46,208 INFO L124 PetriNetUnfolderBase]: 42/109 cut-off events. [2024-06-28 02:36:46,209 INFO L125 PetriNetUnfolderBase]: For 799/799 co-relation queries the response was YES. [2024-06-28 02:36:46,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 109 events. 42/109 cut-off events. For 799/799 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 313 event pairs, 17 based on Foata normal form. 6/115 useless extension candidates. Maximal degree in co-relation 330. Up to 52 conditions per place. [2024-06-28 02:36:46,209 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 14 selfloop transitions, 2 changer transitions 10/31 dead transitions. [2024-06-28 02:36:46,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 31 transitions, 189 flow [2024-06-28 02:36:46,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:36:46,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:36:46,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-06-28 02:36:46,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2024-06-28 02:36:46,210 INFO L175 Difference]: Start difference. First operand has 54 places, 23 transitions, 119 flow. Second operand 6 states and 93 transitions. [2024-06-28 02:36:46,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 31 transitions, 189 flow [2024-06-28 02:36:46,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 31 transitions, 156 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:36:46,211 INFO L231 Difference]: Finished difference. Result has 43 places, 20 transitions, 79 flow [2024-06-28 02:36:46,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=43, PETRI_TRANSITIONS=20} [2024-06-28 02:36:46,212 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 15 predicate places. [2024-06-28 02:36:46,212 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 20 transitions, 79 flow [2024-06-28 02:36:46,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:46,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:46,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:46,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:36:46,212 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:36:46,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:46,213 INFO L85 PathProgramCache]: Analyzing trace with hash -506338633, now seen corresponding path program 5 times [2024-06-28 02:36:46,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:46,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643972279] [2024-06-28 02:36:46,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:46,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:46,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:46,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643972279] [2024-06-28 02:36:46,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643972279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:46,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:46,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:36:46,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185587725] [2024-06-28 02:36:46,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:46,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:36:46,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:46,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:36:46,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:36:46,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 02:36:46,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 20 transitions, 79 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:46,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:46,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 02:36:46,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:46,305 INFO L124 PetriNetUnfolderBase]: 20/59 cut-off events. [2024-06-28 02:36:46,305 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2024-06-28 02:36:46,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 59 events. 20/59 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 2 based on Foata normal form. 6/65 useless extension candidates. Maximal degree in co-relation 136. Up to 24 conditions per place. [2024-06-28 02:36:46,305 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2024-06-28 02:36:46,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 24 transitions, 109 flow [2024-06-28 02:36:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:36:46,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:36:46,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-28 02:36:46,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942528735632184 [2024-06-28 02:36:46,306 INFO L175 Difference]: Start difference. First operand has 43 places, 20 transitions, 79 flow. Second operand 6 states and 86 transitions. [2024-06-28 02:36:46,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 24 transitions, 109 flow [2024-06-28 02:36:46,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 24 transitions, 93 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 02:36:46,307 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2024-06-28 02:36:46,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2024-06-28 02:36:46,308 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2024-06-28 02:36:46,308 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2024-06-28 02:36:46,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:36:46,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 02:36:46,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 02:36:46,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 02:36:46,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 02:36:46,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:36:46,311 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:36:46,313 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 02:36:46,313 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 02:36:46,316 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 02:36:46,316 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 02:36:46,317 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 02:36:46 BasicIcfg [2024-06-28 02:36:46,317 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 02:36:46,317 INFO L158 Benchmark]: Toolchain (without parser) took 4682.83ms. Allocated memory was 157.3MB in the beginning and 249.6MB in the end (delta: 92.3MB). Free memory was 83.5MB in the beginning and 103.8MB in the end (delta: -20.3MB). Peak memory consumption was 73.8MB. Max. memory is 16.1GB. [2024-06-28 02:36:46,317 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory was 77.5MB in the beginning and 77.4MB in the end (delta: 77.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:36:46,317 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 157.3MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:36:46,318 INFO L158 Benchmark]: CACSL2BoogieTranslator took 461.90ms. Allocated memory is still 157.3MB. Free memory was 83.3MB in the beginning and 112.8MB in the end (delta: -29.5MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2024-06-28 02:36:46,318 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.14ms. Allocated memory is still 157.3MB. Free memory was 112.8MB in the beginning and 110.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 02:36:46,318 INFO L158 Benchmark]: Boogie Preprocessor took 58.87ms. Allocated memory is still 157.3MB. Free memory was 110.5MB in the beginning and 108.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 02:36:46,318 INFO L158 Benchmark]: RCFGBuilder took 327.67ms. Allocated memory is still 157.3MB. Free memory was 108.4MB in the beginning and 89.1MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-06-28 02:36:46,319 INFO L158 Benchmark]: TraceAbstraction took 3776.29ms. Allocated memory was 157.3MB in the beginning and 249.6MB in the end (delta: 92.3MB). Free memory was 88.3MB in the beginning and 103.8MB in the end (delta: -15.5MB). Peak memory consumption was 76.8MB. Max. memory is 16.1GB. [2024-06-28 02:36:46,319 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory was 77.5MB in the beginning and 77.4MB in the end (delta: 77.6kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 157.3MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 461.90ms. Allocated memory is still 157.3MB. Free memory was 83.3MB in the beginning and 112.8MB in the end (delta: -29.5MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.14ms. Allocated memory is still 157.3MB. Free memory was 112.8MB in the beginning and 110.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.87ms. Allocated memory is still 157.3MB. Free memory was 110.5MB in the beginning and 108.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 327.67ms. Allocated memory is still 157.3MB. Free memory was 108.4MB in the beginning and 89.1MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 3776.29ms. Allocated memory was 157.3MB in the beginning and 249.6MB in the end (delta: 92.3MB). Free memory was 88.3MB in the beginning and 103.8MB in the end (delta: -15.5MB). Peak memory consumption was 76.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 759]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 760]: 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 5 procedures, 46 locations, 4 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: 3.7s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 837 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 543 mSDsluCounter, 366 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 210 mSDsCounter, 94 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2082 IncrementalHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 94 mSolverCounterUnsat, 156 mSDtfsCounter, 2082 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=310occurred in iteration=8, InterpolantAutomatonStates: 125, 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, 1.3s InterpolantComputationTime, 304 NumberOfCodeBlocks, 304 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 281 ConstructedInterpolants, 0 QuantifiedInterpolants, 1381 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 02:36:46,343 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