./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/safe033_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i ./goblint.2024-05-21_14-57-05.files/protection/safe033_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 18:51:27,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 18:51:27,168 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 18:51:27,172 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 18:51:27,172 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 18:51:27,202 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 18:51:27,203 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 18:51:27,203 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 18:51:27,204 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 18:51:27,208 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 18:51:27,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 18:51:27,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 18:51:27,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 18:51:27,211 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 18:51:27,211 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 18:51:27,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 18:51:27,211 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 18:51:27,212 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 18:51:27,212 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 18:51:27,212 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 18:51:27,213 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 18:51:27,213 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 18:51:27,213 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 18:51:27,213 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 18:51:27,214 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 18:51:27,214 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 18:51:27,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 18:51:27,215 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 18:51:27,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 18:51:27,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 18:51:27,220 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 18:51:27,220 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 18:51:27,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 18:51:27,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 18:51:27,221 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 18:51:27,221 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 18:51:27,221 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 18:51:27,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 18:51:27,222 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 18:51:27,222 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 18:51:27,222 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 18:51:27,223 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 18:51:27,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 18:51:27,223 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 18:51:27,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 18:51:27,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 18:51:27,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 18:51:27,495 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 18:51:27,500 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 18:51:27,501 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-06-03 18:51:28,664 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 18:51:28,902 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 18:51:28,902 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-06-03 18:51:28,921 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ee5a1158/e2cb81467dd44e1fa98efc8109d49cec/FLAG44c249b5c [2024-06-03 18:51:28,931 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ee5a1158/e2cb81467dd44e1fa98efc8109d49cec [2024-06-03 18:51:28,934 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 18:51:28,935 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 18:51:28,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/safe033_tso.yml/witness.yml [2024-06-03 18:51:29,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 18:51:29,042 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 18:51:29,042 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 18:51:29,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 18:51:29,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 18:51:29,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 06:51:28" (1/2) ... [2024-06-03 18:51:29,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ab8c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:51:29, skipping insertion in model container [2024-06-03 18:51:29,050 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 06:51:28" (1/2) ... [2024-06-03 18:51:29,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5244ae06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:51:29, skipping insertion in model container [2024-06-03 18:51:29,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 06:51:29" (2/2) ... [2024-06-03 18:51:29,052 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ab8c91 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:51:29, skipping insertion in model container [2024-06-03 18:51:29,052 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 06:51:29" (2/2) ... [2024-06-03 18:51:29,052 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 18:51:29,086 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 18:51:29,087 INFO L97 edCorrectnessWitness]: Location invariant before [L764-L764] (((! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) [2024-06-03 18:51:29,087 INFO L97 edCorrectnessWitness]: Location invariant before [L763-L763] (((! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) [2024-06-03 18:51:29,087 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 18:51:29,088 INFO L106 edCorrectnessWitness]: ghost_update [L761-L761] multithreaded = 1; [2024-06-03 18:51:29,131 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 18:51:29,450 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 18:51:29,458 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 18:51:29,547 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 18:51:29,606 INFO L206 MainTranslator]: Completed translation [2024-06-03 18:51:29,611 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:51:29 WrapperNode [2024-06-03 18:51:29,611 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 18:51:29,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 18:51:29,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 18:51:29,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 18:51:29,620 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 03.06 06:51:29" (1/1) ... [2024-06-03 18:51:29,630 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 03.06 06:51:29" (1/1) ... [2024-06-03 18:51:29,661 INFO L138 Inliner]: procedures = 174, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2024-06-03 18:51:29,662 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 18:51:29,663 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 18:51:29,664 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 18:51:29,664 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 18:51:29,672 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:51:29" (1/1) ... [2024-06-03 18:51:29,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:51:29" (1/1) ... [2024-06-03 18:51:29,686 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:51:29" (1/1) ... [2024-06-03 18:51:29,707 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]. [2024-06-03 18:51:29,708 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:51:29" (1/1) ... [2024-06-03 18:51:29,708 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:51:29" (1/1) ... [2024-06-03 18:51:29,715 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:51:29" (1/1) ... [2024-06-03 18:51:29,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:51:29" (1/1) ... [2024-06-03 18:51:29,722 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:51:29" (1/1) ... [2024-06-03 18:51:29,723 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:51:29" (1/1) ... [2024-06-03 18:51:29,727 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 18:51:29,730 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 18:51:29,730 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 18:51:29,731 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 18:51:29,731 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:51:29" (1/1) ... [2024-06-03 18:51:29,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 18:51:29,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 18:51:29,765 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) [2024-06-03 18:51:29,772 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 [2024-06-03 18:51:29,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 18:51:29,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 18:51:29,800 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 18:51:29,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 18:51:29,800 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 18:51:29,801 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 18:51:29,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 18:51:29,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 18:51:29,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 18:51:29,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 18:51:29,802 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 18:51:29,919 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 18:51:29,921 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 18:51:30,055 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 18:51:30,056 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 18:51:30,154 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 18:51:30,154 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 18:51:30,155 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 06:51:30 BoogieIcfgContainer [2024-06-03 18:51:30,155 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 18:51:30,157 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 18:51:30,157 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 18:51:30,160 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 18:51:30,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 06:51:28" (1/4) ... [2024-06-03 18:51:30,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77adc92f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 06:51:30, skipping insertion in model container [2024-06-03 18:51:30,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 06:51:29" (2/4) ... [2024-06-03 18:51:30,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77adc92f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 06:51:30, skipping insertion in model container [2024-06-03 18:51:30,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:51:29" (3/4) ... [2024-06-03 18:51:30,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77adc92f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 06:51:30, skipping insertion in model container [2024-06-03 18:51:30,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 06:51:30" (4/4) ... [2024-06-03 18:51:30,163 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2024-06-03 18:51:30,179 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 18:51:30,179 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 18:51:30,180 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 18:51:30,217 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 18:51:30,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-03 18:51:30,272 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-03 18:51:30,272 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 18:51:30,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-03 18:51:30,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-03 18:51:30,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-03 18:51:30,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 18:51:30,292 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;@19319024, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 18:51:30,292 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 18:51:30,296 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 18:51:30,298 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-03 18:51:30,298 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 18:51:30,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:30,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 18:51:30,300 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)] === [2024-06-03 18:51:30,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:30,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1558193034, now seen corresponding path program 1 times [2024-06-03 18:51:30,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:30,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122227547] [2024-06-03 18:51:30,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:30,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:30,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:30,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:30,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122227547] [2024-06-03 18:51:30,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122227547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:30,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:30,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 18:51:30,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199470383] [2024-06-03 18:51:30,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:30,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 18:51:30,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:30,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 18:51:30,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 18:51:30,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 31 [2024-06-03 18:51:30,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:30,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:30,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 31 [2024-06-03 18:51:30,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:30,880 INFO L124 PetriNetUnfolderBase]: 83/183 cut-off events. [2024-06-03 18:51:30,880 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-03 18:51:30,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 183 events. 83/183 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 709 event pairs, 43 based on Foata normal form. 1/172 useless extension candidates. Maximal degree in co-relation 343. Up to 153 conditions per place. [2024-06-03 18:51:30,884 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 20 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-03 18:51:30,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 113 flow [2024-06-03 18:51:30,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 18:51:30,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 18:51:30,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-06-03 18:51:30,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6559139784946236 [2024-06-03 18:51:30,897 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 61 transitions. [2024-06-03 18:51:30,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 113 flow [2024-06-03 18:51:30,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 18:51:30,901 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-03 18:51:30,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-03 18:51:30,909 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-03 18:51:30,910 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-03 18:51:30,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:30,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:30,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:30,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 18:51:30,911 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)] === [2024-06-03 18:51:30,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:30,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1519960829, now seen corresponding path program 1 times [2024-06-03 18:51:30,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:30,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545213761] [2024-06-03 18:51:30,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:30,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:31,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:31,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:31,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545213761] [2024-06-03 18:51:31,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545213761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:31,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:31,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 18:51:31,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76647613] [2024-06-03 18:51:31,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:31,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 18:51:31,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:31,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 18:51:31,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 18:51:31,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 31 [2024-06-03 18:51:31,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:31,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:31,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 31 [2024-06-03 18:51:31,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:31,211 INFO L124 PetriNetUnfolderBase]: 80/178 cut-off events. [2024-06-03 18:51:31,211 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-03 18:51:31,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 178 events. 80/178 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 680 event pairs, 34 based on Foata normal form. 2/175 useless extension candidates. Maximal degree in co-relation 387. Up to 139 conditions per place. [2024-06-03 18:51:31,219 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 24 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-03 18:51:31,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 155 flow [2024-06-03 18:51:31,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 18:51:31,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 18:51:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-06-03 18:51:31,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6370967741935484 [2024-06-03 18:51:31,222 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 79 transitions. [2024-06-03 18:51:31,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 155 flow [2024-06-03 18:51:31,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 18:51:31,225 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-03 18:51:31,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-03 18:51:31,228 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-03 18:51:31,228 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-03 18:51:31,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:31,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:31,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:31,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 18:51:31,230 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:51:31,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:31,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1618377718, now seen corresponding path program 1 times [2024-06-03 18:51:31,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:31,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748942188] [2024-06-03 18:51:31,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:31,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:31,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:31,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:31,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748942188] [2024-06-03 18:51:31,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748942188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:31,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:31,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 18:51:31,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933797905] [2024-06-03 18:51:31,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:31,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 18:51:31,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:31,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 18:51:31,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 18:51:31,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:31,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:31,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:31,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:31,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:31,486 INFO L124 PetriNetUnfolderBase]: 101/210 cut-off events. [2024-06-03 18:51:31,486 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-06-03 18:51:31,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 210 events. 101/210 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 779 event pairs, 48 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 521. Up to 182 conditions per place. [2024-06-03 18:51:31,492 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 24 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-03 18:51:31,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 34 transitions, 171 flow [2024-06-03 18:51:31,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 18:51:31,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 18:51:31,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-06-03 18:51:31,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-03 18:51:31,497 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 4 states and 72 transitions. [2024-06-03 18:51:31,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 34 transitions, 171 flow [2024-06-03 18:51:31,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 162 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-03 18:51:31,502 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 111 flow [2024-06-03 18:51:31,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-03 18:51:31,504 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-06-03 18:51:31,516 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 111 flow [2024-06-03 18:51:31,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:31,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:31,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:31,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 18:51:31,518 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)] === [2024-06-03 18:51:31,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:31,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1589661287, now seen corresponding path program 1 times [2024-06-03 18:51:31,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:31,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176459608] [2024-06-03 18:51:31,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:31,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:31,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:31,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176459608] [2024-06-03 18:51:31,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176459608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:31,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:31,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:51:31,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178200853] [2024-06-03 18:51:31,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:31,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:51:31,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:31,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:51:31,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:51:31,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:31,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 111 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:31,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:31,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:31,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:31,854 INFO L124 PetriNetUnfolderBase]: 97/206 cut-off events. [2024-06-03 18:51:31,856 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-06-03 18:51:31,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 206 events. 97/206 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 747 event pairs, 14 based on Foata normal form. 4/208 useless extension candidates. Maximal degree in co-relation 537. Up to 141 conditions per place. [2024-06-03 18:51:31,857 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-03 18:51:31,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 223 flow [2024-06-03 18:51:31,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:51:31,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:51:31,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-03 18:51:31,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2024-06-03 18:51:31,861 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 111 flow. Second operand 6 states and 105 transitions. [2024-06-03 18:51:31,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 223 flow [2024-06-03 18:51:31,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 44 transitions, 214 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-03 18:51:31,864 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 127 flow [2024-06-03 18:51:31,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=127, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-03 18:51:31,866 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-06-03 18:51:31,866 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 127 flow [2024-06-03 18:51:31,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:31,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:31,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:31,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 18:51:31,867 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)] === [2024-06-03 18:51:31,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:31,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1369897695, now seen corresponding path program 1 times [2024-06-03 18:51:31,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:31,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9734640] [2024-06-03 18:51:31,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:31,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:31,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:31,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9734640] [2024-06-03 18:51:31,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9734640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:31,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:31,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 18:51:31,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915895322] [2024-06-03 18:51:31,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:31,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 18:51:31,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:31,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 18:51:31,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 18:51:32,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:32,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 127 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) [2024-06-03 18:51:32,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:32,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:32,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:32,058 INFO L124 PetriNetUnfolderBase]: 99/210 cut-off events. [2024-06-03 18:51:32,058 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-06-03 18:51:32,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 210 events. 99/210 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 784 event pairs, 26 based on Foata normal form. 2/208 useless extension candidates. Maximal degree in co-relation 598. Up to 152 conditions per place. [2024-06-03 18:51:32,060 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 11 changer transitions 0/43 dead transitions. [2024-06-03 18:51:32,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 249 flow [2024-06-03 18:51:32,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 18:51:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 18:51:32,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-03 18:51:32,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-03 18:51:32,063 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 127 flow. Second operand 5 states and 90 transitions. [2024-06-03 18:51:32,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 249 flow [2024-06-03 18:51:32,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 233 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-03 18:51:32,069 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 177 flow [2024-06-03 18:51:32,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-03 18:51:32,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-03 18:51:32,073 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 177 flow [2024-06-03 18:51:32,074 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) [2024-06-03 18:51:32,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:32,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:32,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 18:51:32,078 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)] === [2024-06-03 18:51:32,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:32,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1747112811, now seen corresponding path program 1 times [2024-06-03 18:51:32,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:32,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896145643] [2024-06-03 18:51:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:32,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:32,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:32,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896145643] [2024-06-03 18:51:32,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896145643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:32,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:32,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 18:51:32,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309920285] [2024-06-03 18:51:32,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:32,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 18:51:32,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:32,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 18:51:32,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 18:51:32,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:32,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 177 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) [2024-06-03 18:51:32,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:32,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:32,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:32,322 INFO L124 PetriNetUnfolderBase]: 102/219 cut-off events. [2024-06-03 18:51:32,322 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2024-06-03 18:51:32,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 219 events. 102/219 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 824 event pairs, 26 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 706. Up to 154 conditions per place. [2024-06-03 18:51:32,325 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 30 selfloop transitions, 13 changer transitions 0/48 dead transitions. [2024-06-03 18:51:32,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 48 transitions, 312 flow [2024-06-03 18:51:32,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 18:51:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 18:51:32,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-03 18:51:32,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6064516129032258 [2024-06-03 18:51:32,327 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 177 flow. Second operand 5 states and 94 transitions. [2024-06-03 18:51:32,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 48 transitions, 312 flow [2024-06-03 18:51:32,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 293 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-03 18:51:32,331 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 204 flow [2024-06-03 18:51:32,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2024-06-03 18:51:32,334 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-06-03 18:51:32,335 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 204 flow [2024-06-03 18:51:32,335 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) [2024-06-03 18:51:32,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:32,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:32,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 18:51:32,336 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)] === [2024-06-03 18:51:32,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:32,337 INFO L85 PathProgramCache]: Analyzing trace with hash 410802025, now seen corresponding path program 2 times [2024-06-03 18:51:32,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:32,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611068331] [2024-06-03 18:51:32,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:32,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:32,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:32,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611068331] [2024-06-03 18:51:32,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611068331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:32,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:32,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 18:51:32,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344181951] [2024-06-03 18:51:32,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:32,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 18:51:32,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:32,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 18:51:32,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 18:51:32,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:32,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 204 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) [2024-06-03 18:51:32,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:32,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:32,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:32,510 INFO L124 PetriNetUnfolderBase]: 97/208 cut-off events. [2024-06-03 18:51:32,510 INFO L125 PetriNetUnfolderBase]: For 494/494 co-relation queries the response was YES. [2024-06-03 18:51:32,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 208 events. 97/208 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 761 event pairs, 27 based on Foata normal form. 2/206 useless extension candidates. Maximal degree in co-relation 690. Up to 149 conditions per place. [2024-06-03 18:51:32,512 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 12 changer transitions 0/44 dead transitions. [2024-06-03 18:51:32,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 296 flow [2024-06-03 18:51:32,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 18:51:32,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 18:51:32,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-03 18:51:32,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5741935483870968 [2024-06-03 18:51:32,514 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 204 flow. Second operand 5 states and 89 transitions. [2024-06-03 18:51:32,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 296 flow [2024-06-03 18:51:32,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 277 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-03 18:51:32,516 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 216 flow [2024-06-03 18:51:32,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-06-03 18:51:32,517 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-03 18:51:32,517 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 216 flow [2024-06-03 18:51:32,518 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) [2024-06-03 18:51:32,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:32,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:32,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 18:51:32,518 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)] === [2024-06-03 18:51:32,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:32,519 INFO L85 PathProgramCache]: Analyzing trace with hash 2083295168, now seen corresponding path program 1 times [2024-06-03 18:51:32,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:32,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621997055] [2024-06-03 18:51:32,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:32,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:32,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621997055] [2024-06-03 18:51:32,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621997055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:32,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:32,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:51:32,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267967051] [2024-06-03 18:51:32,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:32,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:51:32,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:32,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:51:32,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:51:32,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:32,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 216 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) [2024-06-03 18:51:32,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:32,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:32,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:32,724 INFO L124 PetriNetUnfolderBase]: 98/211 cut-off events. [2024-06-03 18:51:32,725 INFO L125 PetriNetUnfolderBase]: For 654/654 co-relation queries the response was YES. [2024-06-03 18:51:32,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 211 events. 98/211 cut-off events. For 654/654 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 780 event pairs, 26 based on Foata normal form. 4/211 useless extension candidates. Maximal degree in co-relation 706. Up to 140 conditions per place. [2024-06-03 18:51:32,726 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 15 changer transitions 0/47 dead transitions. [2024-06-03 18:51:32,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 322 flow [2024-06-03 18:51:32,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:51:32,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:51:32,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-03 18:51:32,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553763440860215 [2024-06-03 18:51:32,728 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 216 flow. Second operand 6 states and 103 transitions. [2024-06-03 18:51:32,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 322 flow [2024-06-03 18:51:32,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 286 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-03 18:51:32,731 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 221 flow [2024-06-03 18:51:32,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=44, 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=6, PETRI_FLOW=221, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2024-06-03 18:51:32,733 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2024-06-03 18:51:32,733 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 221 flow [2024-06-03 18:51:32,733 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) [2024-06-03 18:51:32,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:32,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:32,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 18:51:32,734 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)] === [2024-06-03 18:51:32,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:32,734 INFO L85 PathProgramCache]: Analyzing trace with hash 946235976, now seen corresponding path program 1 times [2024-06-03 18:51:32,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:32,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527405372] [2024-06-03 18:51:32,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:32,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:32,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:32,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:32,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527405372] [2024-06-03 18:51:32,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527405372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:32,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:32,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:51:32,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581898817] [2024-06-03 18:51:32,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:32,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:51:32,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:32,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:51:32,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:51:32,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:32,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 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) [2024-06-03 18:51:32,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:32,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:32,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:32,964 INFO L124 PetriNetUnfolderBase]: 101/221 cut-off events. [2024-06-03 18:51:32,964 INFO L125 PetriNetUnfolderBase]: For 671/671 co-relation queries the response was YES. [2024-06-03 18:51:32,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 221 events. 101/221 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 827 event pairs, 21 based on Foata normal form. 1/220 useless extension candidates. Maximal degree in co-relation 754. Up to 165 conditions per place. [2024-06-03 18:51:32,966 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 40 selfloop transitions, 9 changer transitions 0/54 dead transitions. [2024-06-03 18:51:32,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 361 flow [2024-06-03 18:51:32,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:51:32,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:51:32,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-03 18:51:32,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2024-06-03 18:51:32,968 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 221 flow. Second operand 6 states and 105 transitions. [2024-06-03 18:51:32,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 361 flow [2024-06-03 18:51:32,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 326 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-03 18:51:32,971 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 223 flow [2024-06-03 18:51:32,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-06-03 18:51:32,972 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-06-03 18:51:32,973 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 223 flow [2024-06-03 18:51:32,973 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) [2024-06-03 18:51:32,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:32,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:32,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 18:51:32,974 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)] === [2024-06-03 18:51:32,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:32,974 INFO L85 PathProgramCache]: Analyzing trace with hash -152584530, now seen corresponding path program 2 times [2024-06-03 18:51:32,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:32,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128656116] [2024-06-03 18:51:32,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:32,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:33,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:33,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:33,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128656116] [2024-06-03 18:51:33,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128656116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:33,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:33,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:51:33,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642176787] [2024-06-03 18:51:33,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:33,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:51:33,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:33,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:51:33,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:51:33,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:33,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 223 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) [2024-06-03 18:51:33,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:33,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:33,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:33,176 INFO L124 PetriNetUnfolderBase]: 109/236 cut-off events. [2024-06-03 18:51:33,177 INFO L125 PetriNetUnfolderBase]: For 849/849 co-relation queries the response was YES. [2024-06-03 18:51:33,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 236 events. 109/236 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 903 event pairs, 23 based on Foata normal form. 1/233 useless extension candidates. Maximal degree in co-relation 823. Up to 136 conditions per place. [2024-06-03 18:51:33,179 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 34 selfloop transitions, 21 changer transitions 0/60 dead transitions. [2024-06-03 18:51:33,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 439 flow [2024-06-03 18:51:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:51:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:51:33,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-06-03 18:51:33,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6021505376344086 [2024-06-03 18:51:33,180 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 223 flow. Second operand 6 states and 112 transitions. [2024-06-03 18:51:33,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 439 flow [2024-06-03 18:51:33,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 418 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-03 18:51:33,184 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 297 flow [2024-06-03 18:51:33,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-03 18:51:33,185 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-03 18:51:33,185 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 297 flow [2024-06-03 18:51:33,185 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) [2024-06-03 18:51:33,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:33,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:33,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 18:51:33,186 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)] === [2024-06-03 18:51:33,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:33,186 INFO L85 PathProgramCache]: Analyzing trace with hash 931812566, now seen corresponding path program 3 times [2024-06-03 18:51:33,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:33,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880105928] [2024-06-03 18:51:33,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:33,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:33,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:33,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:33,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880105928] [2024-06-03 18:51:33,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880105928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:33,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:33,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:51:33,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739163656] [2024-06-03 18:51:33,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:33,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:51:33,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:33,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:51:33,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:51:33,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:33,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 297 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) [2024-06-03 18:51:33,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:33,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:33,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:33,389 INFO L124 PetriNetUnfolderBase]: 105/226 cut-off events. [2024-06-03 18:51:33,389 INFO L125 PetriNetUnfolderBase]: For 1039/1039 co-relation queries the response was YES. [2024-06-03 18:51:33,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 226 events. 105/226 cut-off events. For 1039/1039 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 884 event pairs, 27 based on Foata normal form. 2/222 useless extension candidates. Maximal degree in co-relation 839. Up to 133 conditions per place. [2024-06-03 18:51:33,391 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 33 selfloop transitions, 18 changer transitions 0/56 dead transitions. [2024-06-03 18:51:33,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 437 flow [2024-06-03 18:51:33,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:51:33,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:51:33,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-03 18:51:33,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2024-06-03 18:51:33,393 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 297 flow. Second operand 6 states and 107 transitions. [2024-06-03 18:51:33,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 437 flow [2024-06-03 18:51:33,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 413 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-03 18:51:33,397 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 315 flow [2024-06-03 18:51:33,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=315, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-06-03 18:51:33,397 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-03 18:51:33,397 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 315 flow [2024-06-03 18:51:33,398 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) [2024-06-03 18:51:33,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:33,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:33,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 18:51:33,398 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)] === [2024-06-03 18:51:33,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1945649245, now seen corresponding path program 1 times [2024-06-03 18:51:33,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:33,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293602140] [2024-06-03 18:51:33,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:33,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:33,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:33,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:33,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293602140] [2024-06-03 18:51:33,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293602140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:33,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:33,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:51:33,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282832107] [2024-06-03 18:51:33,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:33,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:51:33,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:33,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:51:33,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:51:33,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:33,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 315 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:33,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:33,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:33,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:33,617 INFO L124 PetriNetUnfolderBase]: 108/235 cut-off events. [2024-06-03 18:51:33,618 INFO L125 PetriNetUnfolderBase]: For 1223/1223 co-relation queries the response was YES. [2024-06-03 18:51:33,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 235 events. 108/235 cut-off events. For 1223/1223 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 941 event pairs, 28 based on Foata normal form. 1/230 useless extension candidates. Maximal degree in co-relation 905. Up to 154 conditions per place. [2024-06-03 18:51:33,620 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 33 selfloop transitions, 18 changer transitions 0/56 dead transitions. [2024-06-03 18:51:33,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 449 flow [2024-06-03 18:51:33,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 18:51:33,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 18:51:33,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-06-03 18:51:33,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5935483870967742 [2024-06-03 18:51:33,621 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 315 flow. Second operand 5 states and 92 transitions. [2024-06-03 18:51:33,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 449 flow [2024-06-03 18:51:33,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 401 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-03 18:51:33,626 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 336 flow [2024-06-03 18:51:33,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-06-03 18:51:33,627 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-03 18:51:33,627 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 336 flow [2024-06-03 18:51:33,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:33,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:33,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:33,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 18:51:33,628 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)] === [2024-06-03 18:51:33,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:33,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1823471679, now seen corresponding path program 2 times [2024-06-03 18:51:33,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:33,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130824873] [2024-06-03 18:51:33,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:33,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:33,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:33,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:33,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130824873] [2024-06-03 18:51:33,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130824873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:33,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:33,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:51:33,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398856996] [2024-06-03 18:51:33,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:33,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:51:33,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:33,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:51:33,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:51:33,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:33,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:33,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:33,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:33,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:33,834 INFO L124 PetriNetUnfolderBase]: 111/240 cut-off events. [2024-06-03 18:51:33,834 INFO L125 PetriNetUnfolderBase]: For 1373/1373 co-relation queries the response was YES. [2024-06-03 18:51:33,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 240 events. 111/240 cut-off events. For 1373/1373 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 969 event pairs, 28 based on Foata normal form. 1/235 useless extension candidates. Maximal degree in co-relation 935. Up to 141 conditions per place. [2024-06-03 18:51:33,836 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 30 selfloop transitions, 25 changer transitions 0/60 dead transitions. [2024-06-03 18:51:33,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 508 flow [2024-06-03 18:51:33,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:51:33,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:51:33,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-03 18:51:33,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2024-06-03 18:51:33,838 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 336 flow. Second operand 6 states and 107 transitions. [2024-06-03 18:51:33,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 508 flow [2024-06-03 18:51:33,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 60 transitions, 467 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-03 18:51:33,842 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 372 flow [2024-06-03 18:51:33,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2024-06-03 18:51:33,843 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-03 18:51:33,843 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 372 flow [2024-06-03 18:51:33,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:33,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:33,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:33,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 18:51:33,844 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)] === [2024-06-03 18:51:33,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:33,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1823679069, now seen corresponding path program 3 times [2024-06-03 18:51:33,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:33,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088479754] [2024-06-03 18:51:33,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:33,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:33,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:33,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:33,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088479754] [2024-06-03 18:51:33,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088479754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:33,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:33,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:51:33,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892559126] [2024-06-03 18:51:33,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:33,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:51:33,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:33,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:51:33,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:51:33,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:33,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:33,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:33,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:33,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:34,011 INFO L124 PetriNetUnfolderBase]: 109/237 cut-off events. [2024-06-03 18:51:34,012 INFO L125 PetriNetUnfolderBase]: For 1361/1361 co-relation queries the response was YES. [2024-06-03 18:51:34,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 237 events. 109/237 cut-off events. For 1361/1361 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 953 event pairs, 28 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 924. Up to 139 conditions per place. [2024-06-03 18:51:34,014 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 32 selfloop transitions, 22 changer transitions 0/59 dead transitions. [2024-06-03 18:51:34,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 59 transitions, 496 flow [2024-06-03 18:51:34,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:51:34,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:51:34,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-03 18:51:34,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2024-06-03 18:51:34,016 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 372 flow. Second operand 6 states and 105 transitions. [2024-06-03 18:51:34,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 59 transitions, 496 flow [2024-06-03 18:51:34,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 416 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-03 18:51:34,042 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 342 flow [2024-06-03 18:51:34,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-03 18:51:34,043 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-03 18:51:34,043 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 342 flow [2024-06-03 18:51:34,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:34,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:34,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:34,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 18:51:34,044 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)] === [2024-06-03 18:51:34,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:34,044 INFO L85 PathProgramCache]: Analyzing trace with hash 591580353, now seen corresponding path program 1 times [2024-06-03 18:51:34,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:34,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541335032] [2024-06-03 18:51:34,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:34,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:34,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:34,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:34,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541335032] [2024-06-03 18:51:34,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541335032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:34,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:34,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:51:34,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771945574] [2024-06-03 18:51:34,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:34,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:51:34,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:34,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:51:34,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:51:34,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:34,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 342 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:34,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:34,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:34,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:34,249 INFO L124 PetriNetUnfolderBase]: 113/252 cut-off events. [2024-06-03 18:51:34,249 INFO L125 PetriNetUnfolderBase]: For 1478/1478 co-relation queries the response was YES. [2024-06-03 18:51:34,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 252 events. 113/252 cut-off events. For 1478/1478 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1020 event pairs, 26 based on Foata normal form. 2/250 useless extension candidates. Maximal degree in co-relation 947. Up to 173 conditions per place. [2024-06-03 18:51:34,252 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 43 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-03 18:51:34,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 478 flow [2024-06-03 18:51:34,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:51:34,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:51:34,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-03 18:51:34,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553763440860215 [2024-06-03 18:51:34,253 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 342 flow. Second operand 6 states and 103 transitions. [2024-06-03 18:51:34,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 478 flow [2024-06-03 18:51:34,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 419 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-03 18:51:34,257 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 321 flow [2024-06-03 18:51:34,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-06-03 18:51:34,259 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-03 18:51:34,259 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 321 flow [2024-06-03 18:51:34,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:34,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:34,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:34,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 18:51:34,264 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)] === [2024-06-03 18:51:34,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:34,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1066555069, now seen corresponding path program 2 times [2024-06-03 18:51:34,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:34,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451724774] [2024-06-03 18:51:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:34,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:34,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:34,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:34,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451724774] [2024-06-03 18:51:34,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451724774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:34,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:34,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:51:34,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555948181] [2024-06-03 18:51:34,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:34,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:51:34,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:34,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:51:34,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:51:34,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:34,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 321 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:34,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:34,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:34,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:34,465 INFO L124 PetriNetUnfolderBase]: 110/247 cut-off events. [2024-06-03 18:51:34,466 INFO L125 PetriNetUnfolderBase]: For 1412/1412 co-relation queries the response was YES. [2024-06-03 18:51:34,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 924 conditions, 247 events. 110/247 cut-off events. For 1412/1412 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 998 event pairs, 23 based on Foata normal form. 2/245 useless extension candidates. Maximal degree in co-relation 893. Up to 148 conditions per place. [2024-06-03 18:51:34,468 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 44 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2024-06-03 18:51:34,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 62 transitions, 455 flow [2024-06-03 18:51:34,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:51:34,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:51:34,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-03 18:51:34,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543010752688172 [2024-06-03 18:51:34,470 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 321 flow. Second operand 6 states and 101 transitions. [2024-06-03 18:51:34,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 62 transitions, 455 flow [2024-06-03 18:51:34,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 427 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-03 18:51:34,479 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 323 flow [2024-06-03 18:51:34,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=323, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-06-03 18:51:34,480 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-03 18:51:34,480 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 323 flow [2024-06-03 18:51:34,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:34,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:34,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:34,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 18:51:34,481 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)] === [2024-06-03 18:51:34,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:34,482 INFO L85 PathProgramCache]: Analyzing trace with hash -983267885, now seen corresponding path program 1 times [2024-06-03 18:51:34,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:34,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077755736] [2024-06-03 18:51:34,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:34,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:34,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:34,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077755736] [2024-06-03 18:51:34,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077755736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:34,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:34,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:51:34,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810908312] [2024-06-03 18:51:34,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:34,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:51:34,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:34,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:51:34,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:51:34,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:34,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 323 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:34,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:34,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:34,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:34,766 INFO L124 PetriNetUnfolderBase]: 121/271 cut-off events. [2024-06-03 18:51:34,766 INFO L125 PetriNetUnfolderBase]: For 1870/1870 co-relation queries the response was YES. [2024-06-03 18:51:34,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 271 events. 121/271 cut-off events. For 1870/1870 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1120 event pairs, 9 based on Foata normal form. 2/271 useless extension candidates. Maximal degree in co-relation 1012. Up to 168 conditions per place. [2024-06-03 18:51:34,769 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 56 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2024-06-03 18:51:34,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 547 flow [2024-06-03 18:51:34,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:51:34,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:51:34,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-03 18:51:34,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2024-06-03 18:51:34,771 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 323 flow. Second operand 8 states and 134 transitions. [2024-06-03 18:51:34,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 547 flow [2024-06-03 18:51:34,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 73 transitions, 517 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-03 18:51:34,777 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 339 flow [2024-06-03 18:51:34,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=339, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-06-03 18:51:34,777 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-03 18:51:34,777 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 339 flow [2024-06-03 18:51:34,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:34,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:34,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:34,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 18:51:34,778 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)] === [2024-06-03 18:51:34,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:34,779 INFO L85 PathProgramCache]: Analyzing trace with hash -75974135, now seen corresponding path program 2 times [2024-06-03 18:51:34,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:34,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278729705] [2024-06-03 18:51:34,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:34,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:34,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:34,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278729705] [2024-06-03 18:51:34,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278729705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:34,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:34,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:51:34,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504765068] [2024-06-03 18:51:34,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:34,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:51:34,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:34,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:51:34,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:51:34,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:34,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 339 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:34,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:34,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:34,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:35,010 INFO L124 PetriNetUnfolderBase]: 118/264 cut-off events. [2024-06-03 18:51:35,011 INFO L125 PetriNetUnfolderBase]: For 1793/1793 co-relation queries the response was YES. [2024-06-03 18:51:35,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1007 conditions, 264 events. 118/264 cut-off events. For 1793/1793 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1084 event pairs, 19 based on Foata normal form. 2/264 useless extension candidates. Maximal degree in co-relation 974. Up to 192 conditions per place. [2024-06-03 18:51:35,013 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 55 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2024-06-03 18:51:35,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 505 flow [2024-06-03 18:51:35,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:51:35,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:51:35,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-03 18:51:35,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-06-03 18:51:35,015 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 339 flow. Second operand 7 states and 119 transitions. [2024-06-03 18:51:35,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 505 flow [2024-06-03 18:51:35,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 479 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-03 18:51:35,020 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 337 flow [2024-06-03 18:51:35,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=337, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2024-06-03 18:51:35,021 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2024-06-03 18:51:35,021 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 337 flow [2024-06-03 18:51:35,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:35,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:35,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:35,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 18:51:35,022 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)] === [2024-06-03 18:51:35,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:35,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1536088181, now seen corresponding path program 3 times [2024-06-03 18:51:35,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:35,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536599044] [2024-06-03 18:51:35,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:35,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:35,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:35,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:35,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536599044] [2024-06-03 18:51:35,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536599044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:35,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:35,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:51:35,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885772631] [2024-06-03 18:51:35,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:35,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:51:35,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:35,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:51:35,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:51:35,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:35,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 337 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:35,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:35,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:35,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:35,233 INFO L124 PetriNetUnfolderBase]: 122/269 cut-off events. [2024-06-03 18:51:35,233 INFO L125 PetriNetUnfolderBase]: For 2056/2056 co-relation queries the response was YES. [2024-06-03 18:51:35,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 269 events. 122/269 cut-off events. For 2056/2056 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1112 event pairs, 25 based on Foata normal form. 2/266 useless extension candidates. Maximal degree in co-relation 1004. Up to 160 conditions per place. [2024-06-03 18:51:35,235 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 26 changer transitions 0/68 dead transitions. [2024-06-03 18:51:35,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 68 transitions, 501 flow [2024-06-03 18:51:35,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:51:35,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:51:35,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-03 18:51:35,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-03 18:51:35,237 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 337 flow. Second operand 7 states and 124 transitions. [2024-06-03 18:51:35,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 68 transitions, 501 flow [2024-06-03 18:51:35,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 68 transitions, 479 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-03 18:51:35,243 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 383 flow [2024-06-03 18:51:35,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2024-06-03 18:51:35,244 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-03 18:51:35,244 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 383 flow [2024-06-03 18:51:35,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:35,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:35,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:35,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 18:51:35,245 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)] === [2024-06-03 18:51:35,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:35,245 INFO L85 PathProgramCache]: Analyzing trace with hash 2118692597, now seen corresponding path program 4 times [2024-06-03 18:51:35,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:35,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029257004] [2024-06-03 18:51:35,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:35,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:35,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:35,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029257004] [2024-06-03 18:51:35,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029257004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:35,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:35,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:51:35,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730405085] [2024-06-03 18:51:35,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:35,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:51:35,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:35,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:51:35,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:51:35,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:35,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 383 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:35,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:35,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:35,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:35,484 INFO L124 PetriNetUnfolderBase]: 131/289 cut-off events. [2024-06-03 18:51:35,485 INFO L125 PetriNetUnfolderBase]: For 3363/3363 co-relation queries the response was YES. [2024-06-03 18:51:35,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 289 events. 131/289 cut-off events. For 3363/3363 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1260 event pairs, 30 based on Foata normal form. 10/293 useless extension candidates. Maximal degree in co-relation 1065. Up to 151 conditions per place. [2024-06-03 18:51:35,487 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 22 changer transitions 4/68 dead transitions. [2024-06-03 18:51:35,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 68 transitions, 543 flow [2024-06-03 18:51:35,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:51:35,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:51:35,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-03 18:51:35,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5668202764976958 [2024-06-03 18:51:35,489 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 383 flow. Second operand 7 states and 123 transitions. [2024-06-03 18:51:35,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 68 transitions, 543 flow [2024-06-03 18:51:35,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 68 transitions, 485 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-03 18:51:35,496 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 368 flow [2024-06-03 18:51:35,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=368, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2024-06-03 18:51:35,497 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-03 18:51:35,497 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 368 flow [2024-06-03 18:51:35,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:35,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:35,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:35,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 18:51:35,498 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)] === [2024-06-03 18:51:35,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:35,498 INFO L85 PathProgramCache]: Analyzing trace with hash -757301936, now seen corresponding path program 1 times [2024-06-03 18:51:35,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:35,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373443620] [2024-06-03 18:51:35,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:35,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:35,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:35,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373443620] [2024-06-03 18:51:35,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373443620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:35,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:35,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:51:35,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19522426] [2024-06-03 18:51:35,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:35,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:51:35,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:35,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:51:35,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:51:35,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:35,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 368 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:35,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:35,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:35,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:35,722 INFO L124 PetriNetUnfolderBase]: 155/349 cut-off events. [2024-06-03 18:51:35,722 INFO L125 PetriNetUnfolderBase]: For 4431/4431 co-relation queries the response was YES. [2024-06-03 18:51:35,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 349 events. 155/349 cut-off events. For 4431/4431 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1643 event pairs, 40 based on Foata normal form. 6/349 useless extension candidates. Maximal degree in co-relation 1334. Up to 126 conditions per place. [2024-06-03 18:51:35,725 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 40 selfloop transitions, 15 changer transitions 12/72 dead transitions. [2024-06-03 18:51:35,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 72 transitions, 586 flow [2024-06-03 18:51:35,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:51:35,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:51:35,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-03 18:51:35,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5668202764976958 [2024-06-03 18:51:35,728 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 368 flow. Second operand 7 states and 123 transitions. [2024-06-03 18:51:35,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 72 transitions, 586 flow [2024-06-03 18:51:35,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 72 transitions, 530 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 18:51:35,736 INFO L231 Difference]: Finished difference. Result has 76 places, 52 transitions, 327 flow [2024-06-03 18:51:35,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=327, PETRI_PLACES=76, PETRI_TRANSITIONS=52} [2024-06-03 18:51:35,737 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-03 18:51:35,737 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 52 transitions, 327 flow [2024-06-03 18:51:35,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:35,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:35,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:35,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 18:51:35,738 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)] === [2024-06-03 18:51:35,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:35,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1460662900, now seen corresponding path program 2 times [2024-06-03 18:51:35,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:35,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362951412] [2024-06-03 18:51:35,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:35,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:35,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:35,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362951412] [2024-06-03 18:51:35,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362951412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:35,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:35,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:51:35,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967895032] [2024-06-03 18:51:35,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:35,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:51:35,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:35,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:51:35,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:51:35,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:35,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 52 transitions, 327 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:35,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:35,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:35,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:35,963 INFO L124 PetriNetUnfolderBase]: 139/319 cut-off events. [2024-06-03 18:51:35,963 INFO L125 PetriNetUnfolderBase]: For 4686/4686 co-relation queries the response was YES. [2024-06-03 18:51:35,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 319 events. 139/319 cut-off events. For 4686/4686 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1466 event pairs, 31 based on Foata normal form. 6/320 useless extension candidates. Maximal degree in co-relation 1218. Up to 126 conditions per place. [2024-06-03 18:51:35,966 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 39 selfloop transitions, 14 changer transitions 6/64 dead transitions. [2024-06-03 18:51:35,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 64 transitions, 519 flow [2024-06-03 18:51:35,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:51:35,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:51:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-03 18:51:35,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2024-06-03 18:51:35,967 INFO L175 Difference]: Start difference. First operand has 76 places, 52 transitions, 327 flow. Second operand 6 states and 104 transitions. [2024-06-03 18:51:35,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 64 transitions, 519 flow [2024-06-03 18:51:35,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 477 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-03 18:51:35,975 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 310 flow [2024-06-03 18:51:35,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2024-06-03 18:51:35,976 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-03 18:51:35,976 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 310 flow [2024-06-03 18:51:35,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:35,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:35,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:35,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 18:51:35,977 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)] === [2024-06-03 18:51:35,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:35,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1458136446, now seen corresponding path program 3 times [2024-06-03 18:51:35,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:35,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374436562] [2024-06-03 18:51:35,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:35,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:36,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:36,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:36,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374436562] [2024-06-03 18:51:36,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374436562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:36,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:36,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:51:36,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126455504] [2024-06-03 18:51:36,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:36,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:51:36,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:36,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:51:36,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:51:36,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:36,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 310 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:36,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:36,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:36,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:36,194 INFO L124 PetriNetUnfolderBase]: 115/269 cut-off events. [2024-06-03 18:51:36,194 INFO L125 PetriNetUnfolderBase]: For 2848/2848 co-relation queries the response was YES. [2024-06-03 18:51:36,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 269 events. 115/269 cut-off events. For 2848/2848 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1176 event pairs, 21 based on Foata normal form. 8/272 useless extension candidates. Maximal degree in co-relation 920. Up to 140 conditions per place. [2024-06-03 18:51:36,197 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 31 selfloop transitions, 14 changer transitions 8/58 dead transitions. [2024-06-03 18:51:36,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 58 transitions, 440 flow [2024-06-03 18:51:36,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:51:36,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:51:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-03 18:51:36,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553763440860215 [2024-06-03 18:51:36,199 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 310 flow. Second operand 6 states and 103 transitions. [2024-06-03 18:51:36,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 58 transitions, 440 flow [2024-06-03 18:51:36,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 58 transitions, 408 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-03 18:51:36,204 INFO L231 Difference]: Finished difference. Result has 69 places, 45 transitions, 282 flow [2024-06-03 18:51:36,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=69, PETRI_TRANSITIONS=45} [2024-06-03 18:51:36,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-03 18:51:36,205 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 45 transitions, 282 flow [2024-06-03 18:51:36,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:36,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:36,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:36,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 18:51:36,206 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:51:36,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:36,206 INFO L85 PathProgramCache]: Analyzing trace with hash -9612512, now seen corresponding path program 4 times [2024-06-03 18:51:36,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:36,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22835259] [2024-06-03 18:51:36,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:36,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:36,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:36,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22835259] [2024-06-03 18:51:36,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22835259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:36,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:36,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:51:36,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533512917] [2024-06-03 18:51:36,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:36,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:51:36,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:36,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:51:36,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:51:36,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:36,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 45 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:36,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:36,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:36,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:36,400 INFO L124 PetriNetUnfolderBase]: 105/246 cut-off events. [2024-06-03 18:51:36,400 INFO L125 PetriNetUnfolderBase]: For 2450/2450 co-relation queries the response was YES. [2024-06-03 18:51:36,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 246 events. 105/246 cut-off events. For 2450/2450 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1028 event pairs, 28 based on Foata normal form. 8/251 useless extension candidates. Maximal degree in co-relation 846. Up to 131 conditions per place. [2024-06-03 18:51:36,402 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 25 selfloop transitions, 15 changer transitions 9/54 dead transitions. [2024-06-03 18:51:36,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 54 transitions, 406 flow [2024-06-03 18:51:36,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:51:36,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:51:36,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-03 18:51:36,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345622119815668 [2024-06-03 18:51:36,403 INFO L175 Difference]: Start difference. First operand has 69 places, 45 transitions, 282 flow. Second operand 7 states and 116 transitions. [2024-06-03 18:51:36,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 54 transitions, 406 flow [2024-06-03 18:51:36,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 54 transitions, 355 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-03 18:51:36,408 INFO L231 Difference]: Finished difference. Result has 65 places, 42 transitions, 249 flow [2024-06-03 18:51:36,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=249, PETRI_PLACES=65, PETRI_TRANSITIONS=42} [2024-06-03 18:51:36,409 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-03 18:51:36,409 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 42 transitions, 249 flow [2024-06-03 18:51:36,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:36,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:36,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:36,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 18:51:36,411 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:51:36,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:36,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1988000, now seen corresponding path program 1 times [2024-06-03 18:51:36,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:36,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460227570] [2024-06-03 18:51:36,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:36,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:36,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:36,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460227570] [2024-06-03 18:51:36,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460227570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:36,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:36,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:51:36,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024000535] [2024-06-03 18:51:36,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:36,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:51:36,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:36,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:51:36,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:51:36,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:36,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 42 transitions, 249 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:36,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:36,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:36,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:36,661 INFO L124 PetriNetUnfolderBase]: 118/281 cut-off events. [2024-06-03 18:51:36,662 INFO L125 PetriNetUnfolderBase]: For 3063/3063 co-relation queries the response was YES. [2024-06-03 18:51:36,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 281 events. 118/281 cut-off events. For 3063/3063 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1258 event pairs, 36 based on Foata normal form. 6/284 useless extension candidates. Maximal degree in co-relation 994. Up to 111 conditions per place. [2024-06-03 18:51:36,669 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 29 selfloop transitions, 14 changer transitions 7/55 dead transitions. [2024-06-03 18:51:36,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 55 transitions, 417 flow [2024-06-03 18:51:36,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:51:36,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:51:36,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-03 18:51:36,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543778801843318 [2024-06-03 18:51:36,670 INFO L175 Difference]: Start difference. First operand has 65 places, 42 transitions, 249 flow. Second operand 7 states and 118 transitions. [2024-06-03 18:51:36,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 55 transitions, 417 flow [2024-06-03 18:51:36,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 379 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 18:51:36,675 INFO L231 Difference]: Finished difference. Result has 63 places, 39 transitions, 229 flow [2024-06-03 18:51:36,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2024-06-03 18:51:36,675 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-03 18:51:36,675 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 229 flow [2024-06-03 18:51:36,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:36,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:36,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:36,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 18:51:36,676 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:51:36,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:36,677 INFO L85 PathProgramCache]: Analyzing trace with hash -208908350, now seen corresponding path program 2 times [2024-06-03 18:51:36,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:36,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307072484] [2024-06-03 18:51:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:36,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:36,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:36,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307072484] [2024-06-03 18:51:36,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307072484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:36,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:36,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:51:36,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851154076] [2024-06-03 18:51:36,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:36,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:51:36,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:36,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:51:36,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:51:36,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:36,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 229 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:36,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:36,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:36,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:36,876 INFO L124 PetriNetUnfolderBase]: 91/220 cut-off events. [2024-06-03 18:51:36,876 INFO L125 PetriNetUnfolderBase]: For 2030/2030 co-relation queries the response was YES. [2024-06-03 18:51:36,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 220 events. 91/220 cut-off events. For 2030/2030 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 900 event pairs, 30 based on Foata normal form. 8/225 useless extension candidates. Maximal degree in co-relation 710. Up to 117 conditions per place. [2024-06-03 18:51:36,879 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 24 selfloop transitions, 9 changer transitions 10/48 dead transitions. [2024-06-03 18:51:36,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 48 transitions, 339 flow [2024-06-03 18:51:36,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:51:36,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:51:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-03 18:51:36,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207373271889401 [2024-06-03 18:51:36,880 INFO L175 Difference]: Start difference. First operand has 63 places, 39 transitions, 229 flow. Second operand 7 states and 113 transitions. [2024-06-03 18:51:36,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 48 transitions, 339 flow [2024-06-03 18:51:36,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 48 transitions, 309 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-03 18:51:36,884 INFO L231 Difference]: Finished difference. Result has 63 places, 35 transitions, 197 flow [2024-06-03 18:51:36,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=197, PETRI_PLACES=63, PETRI_TRANSITIONS=35} [2024-06-03 18:51:36,885 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-03 18:51:36,885 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 35 transitions, 197 flow [2024-06-03 18:51:36,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:36,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:36,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:36,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-03 18:51:36,886 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:51:36,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:36,886 INFO L85 PathProgramCache]: Analyzing trace with hash -209062172, now seen corresponding path program 5 times [2024-06-03 18:51:36,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:36,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855121914] [2024-06-03 18:51:36,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:36,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:36,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:36,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855121914] [2024-06-03 18:51:36,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855121914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:36,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:36,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:51:36,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101400864] [2024-06-03 18:51:36,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:36,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:51:36,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:36,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:51:36,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:51:37,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:37,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 35 transitions, 197 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:37,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:37,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:37,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:37,065 INFO L124 PetriNetUnfolderBase]: 73/190 cut-off events. [2024-06-03 18:51:37,066 INFO L125 PetriNetUnfolderBase]: For 1515/1515 co-relation queries the response was YES. [2024-06-03 18:51:37,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 190 events. 73/190 cut-off events. For 1515/1515 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 720 event pairs, 23 based on Foata normal form. 6/193 useless extension candidates. Maximal degree in co-relation 580. Up to 62 conditions per place. [2024-06-03 18:51:37,067 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 18 selfloop transitions, 4 changer transitions 18/45 dead transitions. [2024-06-03 18:51:37,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 45 transitions, 299 flow [2024-06-03 18:51:37,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:51:37,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:51:37,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-06-03 18:51:37,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.511520737327189 [2024-06-03 18:51:37,068 INFO L175 Difference]: Start difference. First operand has 63 places, 35 transitions, 197 flow. Second operand 7 states and 111 transitions. [2024-06-03 18:51:37,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 45 transitions, 299 flow [2024-06-03 18:51:37,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 45 transitions, 277 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-03 18:51:37,071 INFO L231 Difference]: Finished difference. Result has 61 places, 25 transitions, 127 flow [2024-06-03 18:51:37,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=127, PETRI_PLACES=61, PETRI_TRANSITIONS=25} [2024-06-03 18:51:37,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-03 18:51:37,072 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 25 transitions, 127 flow [2024-06-03 18:51:37,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:37,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:37,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:37,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-03 18:51:37,072 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:51:37,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:37,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1573048416, now seen corresponding path program 3 times [2024-06-03 18:51:37,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:37,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716477316] [2024-06-03 18:51:37,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:37,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:37,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:37,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716477316] [2024-06-03 18:51:37,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716477316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:37,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:37,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:51:37,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972723289] [2024-06-03 18:51:37,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:37,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:51:37,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:37,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:51:37,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:51:37,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:37,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 25 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:37,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:37,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:37,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:37,258 INFO L124 PetriNetUnfolderBase]: 42/112 cut-off events. [2024-06-03 18:51:37,258 INFO L125 PetriNetUnfolderBase]: For 1248/1248 co-relation queries the response was YES. [2024-06-03 18:51:37,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 112 events. 42/112 cut-off events. For 1248/1248 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 330 event pairs, 15 based on Foata normal form. 6/115 useless extension candidates. Maximal degree in co-relation 354. Up to 52 conditions per place. [2024-06-03 18:51:37,259 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 16 selfloop transitions, 3 changer transitions 10/34 dead transitions. [2024-06-03 18:51:37,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 34 transitions, 207 flow [2024-06-03 18:51:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:51:37,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:51:37,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-06-03 18:51:37,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930875576036866 [2024-06-03 18:51:37,261 INFO L175 Difference]: Start difference. First operand has 61 places, 25 transitions, 127 flow. Second operand 7 states and 107 transitions. [2024-06-03 18:51:37,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 34 transitions, 207 flow [2024-06-03 18:51:37,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 34 transitions, 176 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-03 18:51:37,262 INFO L231 Difference]: Finished difference. Result has 47 places, 22 transitions, 90 flow [2024-06-03 18:51:37,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=90, PETRI_PLACES=47, PETRI_TRANSITIONS=22} [2024-06-03 18:51:37,266 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-03 18:51:37,266 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 22 transitions, 90 flow [2024-06-03 18:51:37,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:37,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:51:37,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:37,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-03 18:51:37,267 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:51:37,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:51:37,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1537750180, now seen corresponding path program 4 times [2024-06-03 18:51:37,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:51:37,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888344757] [2024-06-03 18:51:37,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:51:37,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:51:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:51:37,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:51:37,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:51:37,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888344757] [2024-06-03 18:51:37,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888344757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:51:37,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:51:37,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:51:37,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642424098] [2024-06-03 18:51:37,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:51:37,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:51:37,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:51:37,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:51:37,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:51:37,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-03 18:51:37,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 22 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:37,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:51:37,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-03 18:51:37,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:51:37,451 INFO L124 PetriNetUnfolderBase]: 20/64 cut-off events. [2024-06-03 18:51:37,452 INFO L125 PetriNetUnfolderBase]: For 268/268 co-relation queries the response was YES. [2024-06-03 18:51:37,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 64 events. 20/64 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 6/69 useless extension candidates. Maximal degree in co-relation 151. Up to 24 conditions per place. [2024-06-03 18:51:37,452 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2024-06-03 18:51:37,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 27 transitions, 126 flow [2024-06-03 18:51:37,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:51:37,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:51:37,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-03 18:51:37,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608294930875576 [2024-06-03 18:51:37,454 INFO L175 Difference]: Start difference. First operand has 47 places, 22 transitions, 90 flow. Second operand 7 states and 100 transitions. [2024-06-03 18:51:37,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 27 transitions, 126 flow [2024-06-03 18:51:37,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 104 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-03 18:51:37,454 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-06-03 18:51:37,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-06-03 18:51:37,456 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-06-03 18:51:37,457 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-06-03 18:51:37,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:51:37,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 18:51:37,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 18:51:37,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 18:51:37,462 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 18:51:37,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-03 18:51:37,463 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-06-03 18:51:37,466 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 18:51:37,466 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 18:51:37,470 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 18:51:37,470 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 18:51:37,471 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 06:51:37 BasicIcfg [2024-06-03 18:51:37,471 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 18:51:37,471 INFO L158 Benchmark]: Toolchain (without parser) took 8429.85ms. Allocated memory was 174.1MB in the beginning and 260.0MB in the end (delta: 86.0MB). Free memory was 101.4MB in the beginning and 211.7MB in the end (delta: -110.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 18:51:37,471 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 75.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 18:51:37,472 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 174.1MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 18:51:37,472 INFO L158 Benchmark]: CACSL2BoogieTranslator took 569.36ms. Allocated memory is still 174.1MB. Free memory was 101.1MB in the beginning and 145.0MB in the end (delta: -43.8MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2024-06-03 18:51:37,472 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.72ms. Allocated memory is still 174.1MB. Free memory was 145.0MB in the beginning and 143.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 18:51:37,473 INFO L158 Benchmark]: Boogie Preprocessor took 66.25ms. Allocated memory is still 174.1MB. Free memory was 143.3MB in the beginning and 141.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 18:51:37,473 INFO L158 Benchmark]: RCFGBuilder took 424.76ms. Allocated memory is still 174.1MB. Free memory was 141.3MB in the beginning and 120.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-03 18:51:37,473 INFO L158 Benchmark]: TraceAbstraction took 7314.29ms. Allocated memory was 174.1MB in the beginning and 260.0MB in the end (delta: 86.0MB). Free memory was 119.4MB in the beginning and 211.7MB in the end (delta: -92.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 18:51:37,474 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 75.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 174.1MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 569.36ms. Allocated memory is still 174.1MB. Free memory was 101.1MB in the beginning and 145.0MB in the end (delta: -43.8MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.72ms. Allocated memory is still 174.1MB. Free memory was 145.0MB in the beginning and 143.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.25ms. Allocated memory is still 174.1MB. Free memory was 143.3MB in the beginning and 141.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 424.76ms. Allocated memory is still 174.1MB. Free memory was 141.3MB in the beginning and 120.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 7314.29ms. Allocated memory was 174.1MB in the beginning and 260.0MB in the end (delta: 86.0MB). Free memory was 119.4MB in the beginning and 211.7MB in the end (delta: -92.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 763]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 764]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 49 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: 7.2s, OverallIterations: 29, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1136 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 797 mSDsluCounter, 346 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 215 mSDsCounter, 119 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3371 IncrementalHoareTripleChecker+Invalid, 3490 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 119 mSolverCounterUnsat, 131 mSDtfsCounter, 3371 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=383occurred in iteration=19, InterpolantAutomatonStates: 175, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 444 NumberOfCodeBlocks, 444 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 415 ConstructedInterpolants, 0 QuantifiedInterpolants, 2985 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 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! [2024-06-03 18:51:37,510 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