./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/chl-poker-hand-symm.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/weaver/chl-poker-hand-symm.wvr.c ./goblint.2024-06-19_11-23-25.files/protection/chl-poker-hand-symm.wvr.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-eb4cb34-m [2024-06-21 16:05:53,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 16:05:53,598 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 16:05:53,603 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 16:05:53,603 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 16:05:53,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 16:05:53,630 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 16:05:53,631 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 16:05:53,632 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 16:05:53,635 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 16:05:53,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 16:05:53,636 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 16:05:53,637 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 16:05:53,638 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 16:05:53,638 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 16:05:53,638 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 16:05:53,639 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 16:05:53,639 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 16:05:53,639 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 16:05:53,639 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 16:05:53,640 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 16:05:53,640 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 16:05:53,640 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 16:05:53,641 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 16:05:53,641 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 16:05:53,641 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 16:05:53,642 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 16:05:53,642 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 16:05:53,642 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 16:05:53,643 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 16:05:53,644 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 16:05:53,644 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 16:05:53,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:05:53,644 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 16:05:53,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 16:05:53,655 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 16:05:53,655 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 16:05:53,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 16:05:53,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 16:05:53,656 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 16:05:53,656 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 16:05:53,656 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 16:05:53,656 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 16:05:53,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 16:05:53,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 16:05:53,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 16:05:53,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 16:05:53,962 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 16:05:53,962 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 16:05:53,963 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-06-21 16:05:55,130 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 16:05:55,309 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 16:05:55,310 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-06-21 16:05:55,319 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/585ffa4cc/8107324d09ac466eb822c6d587af53b4/FLAG04cba1077 [2024-06-21 16:05:55,331 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/585ffa4cc/8107324d09ac466eb822c6d587af53b4 [2024-06-21 16:05:55,333 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 16:05:55,334 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 16:05:55,334 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/chl-poker-hand-symm.wvr.yml/witness.yml [2024-06-21 16:05:55,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 16:05:55,407 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 16:05:55,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 16:05:55,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 16:05:55,412 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 16:05:55,413 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:05:55" (1/2) ... [2024-06-21 16:05:55,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4523287d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:05:55, skipping insertion in model container [2024-06-21 16:05:55,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:05:55" (1/2) ... [2024-06-21 16:05:55,416 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3457dd83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:05:55, skipping insertion in model container [2024-06-21 16:05:55,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:05:55" (2/2) ... [2024-06-21 16:05:55,416 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4523287d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:55, skipping insertion in model container [2024-06-21 16:05:55,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:05:55" (2/2) ... [2024-06-21 16:05:55,417 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 16:05:55,445 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 16:05:55,446 INFO L97 edCorrectnessWitness]: Location invariant before [L230-L230] (((! multithreaded || 0 <= i1_9) && (! multithreaded || 0 <= i1_14)) && (! multithreaded || i2_16 == 0)) && (! multithreaded || i2_11 == 0) [2024-06-21 16:05:55,446 INFO L97 edCorrectnessWitness]: Location invariant before [L231-L231] (((! multithreaded || 0 <= i1_9) && (! multithreaded || 0 <= i1_14)) && (! multithreaded || i2_16 == 0)) && (! multithreaded || i2_11 == 0) [2024-06-21 16:05:55,446 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 16:05:55,446 INFO L106 edCorrectnessWitness]: ghost_update [L229-L229] multithreaded = 1; [2024-06-21 16:05:55,476 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 16:05:55,759 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:05:55,767 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 16:05:55,902 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:05:55,925 INFO L206 MainTranslator]: Completed translation [2024-06-21 16:05:55,925 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:55 WrapperNode [2024-06-21 16:05:55,928 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 16:05:55,929 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 16:05:55,930 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 16:05:55,930 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 16:05:55,936 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 21.06 04:05:55" (1/1) ... [2024-06-21 16:05:55,954 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 21.06 04:05:55" (1/1) ... [2024-06-21 16:05:56,020 INFO L138 Inliner]: procedures = 24, calls = 298, calls flagged for inlining = 70, calls inlined = 98, statements flattened = 1566 [2024-06-21 16:05:56,021 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 16:05:56,021 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 16:05:56,022 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 16:05:56,022 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 16:05:56,040 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:55" (1/1) ... [2024-06-21 16:05:56,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:55" (1/1) ... [2024-06-21 16:05:56,051 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:55" (1/1) ... [2024-06-21 16:05:56,110 INFO L175 MemorySlicer]: Split 186 memory accesses to 2 slices as follows [184, 2]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 8 writes are split as follows [8, 0]. [2024-06-21 16:05:56,111 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:55" (1/1) ... [2024-06-21 16:05:56,111 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:55" (1/1) ... [2024-06-21 16:05:56,159 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:55" (1/1) ... [2024-06-21 16:05:56,194 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:55" (1/1) ... [2024-06-21 16:05:56,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:55" (1/1) ... [2024-06-21 16:05:56,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:55" (1/1) ... [2024-06-21 16:05:56,224 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 16:05:56,226 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 16:05:56,227 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 16:05:56,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 16:05:56,228 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:55" (1/1) ... [2024-06-21 16:05:56,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:05:56,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 16:05:56,300 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) [2024-06-21 16:05:56,319 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 [2024-06-21 16:05:56,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 16:05:56,345 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-21 16:05:56,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-21 16:05:56,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-21 16:05:56,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-21 16:05:56,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 16:05:56,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-21 16:05:56,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-21 16:05:56,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-21 16:05:56,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 16:05:56,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 16:05:56,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-21 16:05:56,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 16:05:56,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 16:05:56,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-21 16:05:56,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-21 16:05:56,352 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 16:05:56,535 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 16:05:56,537 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 16:05:57,845 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 16:05:57,845 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 16:05:59,385 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 16:05:59,385 INFO L320 CfgBuilder]: Removed 12 assume(true) statements. [2024-06-21 16:05:59,386 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:05:59 BoogieIcfgContainer [2024-06-21 16:05:59,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 16:05:59,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 16:05:59,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 16:05:59,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 16:05:59,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 04:05:55" (1/4) ... [2024-06-21 16:05:59,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec313a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 04:05:59, skipping insertion in model container [2024-06-21 16:05:59,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:05:55" (2/4) ... [2024-06-21 16:05:59,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec313a8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:05:59, skipping insertion in model container [2024-06-21 16:05:59,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:05:55" (3/4) ... [2024-06-21 16:05:59,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec313a8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:05:59, skipping insertion in model container [2024-06-21 16:05:59,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:05:59" (4/4) ... [2024-06-21 16:05:59,397 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2024-06-21 16:05:59,416 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 16:05:59,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 16:05:59,417 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 16:05:59,694 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-21 16:05:59,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 97 transitions, 208 flow [2024-06-21 16:05:59,791 INFO L124 PetriNetUnfolderBase]: 28/95 cut-off events. [2024-06-21 16:05:59,791 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-21 16:05:59,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 28/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 251 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 75. Up to 7 conditions per place. [2024-06-21 16:05:59,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 97 transitions, 208 flow [2024-06-21 16:05:59,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 93 transitions, 195 flow [2024-06-21 16:05:59,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 16:05:59,812 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;@7577a9dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 16:05:59,813 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 16:05:59,820 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 16:05:59,821 INFO L124 PetriNetUnfolderBase]: 8/23 cut-off events. [2024-06-21 16:05:59,821 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 16:05:59,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:59,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:59,822 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)] === [2024-06-21 16:05:59,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:59,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1776879632, now seen corresponding path program 1 times [2024-06-21 16:05:59,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:59,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986838206] [2024-06-21 16:05:59,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:59,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:06:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:06:00,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:06:00,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:06:00,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986838206] [2024-06-21 16:06:00,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986838206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:06:00,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:06:00,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:06:00,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837234235] [2024-06-21 16:06:00,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:06:00,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 16:06:00,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:06:00,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 16:06:00,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 16:06:00,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 97 [2024-06-21 16:06:00,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 93 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:06:00,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:06:00,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 97 [2024-06-21 16:06:00,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:06:01,655 INFO L124 PetriNetUnfolderBase]: 2533/3824 cut-off events. [2024-06-21 16:06:01,655 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-06-21 16:06:01,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7696 conditions, 3824 events. 2533/3824 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18385 event pairs, 1725 based on Foata normal form. 0/3002 useless extension candidates. Maximal degree in co-relation 7511. Up to 3791 conditions per place. [2024-06-21 16:06:01,683 INFO L140 encePairwiseOnDemand]: 84/97 looper letters, 80 selfloop transitions, 8 changer transitions 1/93 dead transitions. [2024-06-21 16:06:01,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 93 transitions, 373 flow [2024-06-21 16:06:01,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 16:06:01,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 16:06:01,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-06-21 16:06:01,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951890034364261 [2024-06-21 16:06:01,699 INFO L175 Difference]: Start difference. First operand has 72 places, 93 transitions, 195 flow. Second operand 3 states and 115 transitions. [2024-06-21 16:06:01,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 93 transitions, 373 flow [2024-06-21 16:06:01,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 93 transitions, 368 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 16:06:01,709 INFO L231 Difference]: Finished difference. Result has 72 places, 92 transitions, 221 flow [2024-06-21 16:06:01,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=72, PETRI_TRANSITIONS=92} [2024-06-21 16:06:01,714 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2024-06-21 16:06:01,715 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 92 transitions, 221 flow [2024-06-21 16:06:01,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:06:01,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:06:01,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:06:01,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 16:06:01,716 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)] === [2024-06-21 16:06:01,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:06:01,717 INFO L85 PathProgramCache]: Analyzing trace with hash -768269484, now seen corresponding path program 1 times [2024-06-21 16:06:01,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:06:01,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273716191] [2024-06-21 16:06:01,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:06:01,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:06:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:06:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-21 16:06:01,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:06:01,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273716191] [2024-06-21 16:06:01,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273716191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:06:01,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:06:01,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 16:06:01,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574424646] [2024-06-21 16:06:01,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:06:01,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 16:06:01,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:06:01,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 16:06:01,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 16:06:01,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 97 [2024-06-21 16:06:01,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 92 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:06:01,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:06:01,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 97 [2024-06-21 16:06:01,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:06:03,485 INFO L124 PetriNetUnfolderBase]: 4038/6070 cut-off events. [2024-06-21 16:06:03,485 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-21 16:06:03,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12207 conditions, 6070 events. 4038/6070 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 31115 event pairs, 1914 based on Foata normal form. 576/5444 useless extension candidates. Maximal degree in co-relation 12158. Up to 3640 conditions per place. [2024-06-21 16:06:03,507 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 153 selfloop transitions, 3 changer transitions 0/158 dead transitions. [2024-06-21 16:06:03,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 158 transitions, 667 flow [2024-06-21 16:06:03,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 16:06:03,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 16:06:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-06-21 16:06:03,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.570446735395189 [2024-06-21 16:06:03,515 INFO L175 Difference]: Start difference. First operand has 72 places, 92 transitions, 221 flow. Second operand 3 states and 166 transitions. [2024-06-21 16:06:03,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 158 transitions, 667 flow [2024-06-21 16:06:03,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 158 transitions, 659 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 16:06:03,521 INFO L231 Difference]: Finished difference. Result has 73 places, 94 transitions, 234 flow [2024-06-21 16:06:03,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=73, PETRI_TRANSITIONS=94} [2024-06-21 16:06:03,522 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2024-06-21 16:06:03,523 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 94 transitions, 234 flow [2024-06-21 16:06:03,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:06:03,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:06:03,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:06:03,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 16:06:03,527 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:06:03,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:06:03,539 INFO L85 PathProgramCache]: Analyzing trace with hash 2044946474, now seen corresponding path program 1 times [2024-06-21 16:06:03,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:06:03,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214615759] [2024-06-21 16:06:03,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:06:03,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:06:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:06:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-21 16:06:03,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:06:03,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214615759] [2024-06-21 16:06:03,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214615759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:06:03,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:06:03,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:06:03,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034038321] [2024-06-21 16:06:03,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:06:03,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:06:03,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:06:03,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:06:03,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:06:03,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 97 [2024-06-21 16:06:03,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 94 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 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) [2024-06-21 16:06:03,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:06:03,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 97 [2024-06-21 16:06:03,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:06:05,306 INFO L124 PetriNetUnfolderBase]: 3882/5872 cut-off events. [2024-06-21 16:06:05,307 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2024-06-21 16:06:05,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12304 conditions, 5872 events. 3882/5872 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 30376 event pairs, 1822 based on Foata normal form. 150/4860 useless extension candidates. Maximal degree in co-relation 12251. Up to 3640 conditions per place. [2024-06-21 16:06:05,323 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 114 selfloop transitions, 4 changer transitions 50/170 dead transitions. [2024-06-21 16:06:05,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 170 transitions, 726 flow [2024-06-21 16:06:05,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 16:06:05,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 16:06:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-06-21 16:06:05,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4690721649484536 [2024-06-21 16:06:05,325 INFO L175 Difference]: Start difference. First operand has 73 places, 94 transitions, 234 flow. Second operand 4 states and 182 transitions. [2024-06-21 16:06:05,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 170 transitions, 726 flow [2024-06-21 16:06:05,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 170 transitions, 723 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 16:06:05,329 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 201 flow [2024-06-21 16:06:05,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2024-06-21 16:06:05,330 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2024-06-21 16:06:05,330 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 201 flow [2024-06-21 16:06:05,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 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) [2024-06-21 16:06:05,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:06:05,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:06:05,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 16:06:05,331 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:06:05,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:06:05,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1571168492, now seen corresponding path program 1 times [2024-06-21 16:06:05,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:06:05,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111558534] [2024-06-21 16:06:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:06:05,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:06:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:06:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-21 16:06:05,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:06:05,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111558534] [2024-06-21 16:06:05,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111558534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:06:05,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:06:05,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:06:05,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650756736] [2024-06-21 16:06:05,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:06:05,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:06:05,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:06:05,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:06:05,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:06:05,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 97 [2024-06-21 16:06:05,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 201 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:06:05,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:06:05,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 97 [2024-06-21 16:06:05,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:06:06,297 INFO L124 PetriNetUnfolderBase]: 1752/2806 cut-off events. [2024-06-21 16:06:06,298 INFO L125 PetriNetUnfolderBase]: For 731/731 co-relation queries the response was YES. [2024-06-21 16:06:06,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6108 conditions, 2806 events. 1752/2806 cut-off events. For 731/731 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 13162 event pairs, 772 based on Foata normal form. 144/2514 useless extension candidates. Maximal degree in co-relation 6053. Up to 1324 conditions per place. [2024-06-21 16:06:06,306 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 68 selfloop transitions, 4 changer transitions 53/127 dead transitions. [2024-06-21 16:06:06,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 127 transitions, 569 flow [2024-06-21 16:06:06,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 16:06:06,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 16:06:06,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-06-21 16:06:06,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35309278350515466 [2024-06-21 16:06:06,308 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 201 flow. Second operand 4 states and 137 transitions. [2024-06-21 16:06:06,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 127 transitions, 569 flow [2024-06-21 16:06:06,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 127 transitions, 563 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 16:06:06,312 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 169 flow [2024-06-21 16:06:06,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-06-21 16:06:06,313 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -10 predicate places. [2024-06-21 16:06:06,313 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 169 flow [2024-06-21 16:06:06,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:06:06,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:06:06,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:06:06,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 16:06:06,314 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)] === [2024-06-21 16:06:06,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:06:06,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1153662620, now seen corresponding path program 1 times [2024-06-21 16:06:06,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:06:06,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412053079] [2024-06-21 16:06:06,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:06:06,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:06:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:06:06,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-21 16:06:06,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:06:06,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412053079] [2024-06-21 16:06:06,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412053079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:06:06,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:06:06,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 16:06:06,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899129201] [2024-06-21 16:06:06,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:06:06,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 16:06:06,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:06:06,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 16:06:06,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 16:06:06,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 97 [2024-06-21 16:06:06,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:06:06,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:06:06,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 97 [2024-06-21 16:06:06,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:06:06,821 INFO L124 PetriNetUnfolderBase]: 771/1326 cut-off events. [2024-06-21 16:06:06,821 INFO L125 PetriNetUnfolderBase]: For 355/375 co-relation queries the response was YES. [2024-06-21 16:06:06,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3039 conditions, 1326 events. 771/1326 cut-off events. For 355/375 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5522 event pairs, 670 based on Foata normal form. 1/1172 useless extension candidates. Maximal degree in co-relation 2979. Up to 1310 conditions per place. [2024-06-21 16:06:06,827 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 46 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2024-06-21 16:06:06,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 273 flow [2024-06-21 16:06:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 16:06:06,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 16:06:06,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-06-21 16:06:06,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.21305841924398625 [2024-06-21 16:06:06,833 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 169 flow. Second operand 3 states and 62 transitions. [2024-06-21 16:06:06,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 273 flow [2024-06-21 16:06:06,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 53 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 16:06:06,836 INFO L231 Difference]: Finished difference. Result has 48 places, 53 transitions, 185 flow [2024-06-21 16:06:06,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=48, PETRI_TRANSITIONS=53} [2024-06-21 16:06:06,839 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -24 predicate places. [2024-06-21 16:06:06,839 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 53 transitions, 185 flow [2024-06-21 16:06:06,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:06:06,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:06:06,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:06:06,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 16:06:06,840 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)] === [2024-06-21 16:06:06,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:06:06,841 INFO L85 PathProgramCache]: Analyzing trace with hash -74225717, now seen corresponding path program 1 times [2024-06-21 16:06:06,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:06:06,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746723579] [2024-06-21 16:06:06,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:06:06,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:06:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:06:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-06-21 16:06:07,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:06:07,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746723579] [2024-06-21 16:06:07,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746723579] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-21 16:06:07,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233280185] [2024-06-21 16:06:07,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:06:07,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-21 16:06:07,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 16:06:07,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-21 16:06:07,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-21 16:06:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:06:07,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-21 16:06:07,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-21 16:06:07,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-06-21 16:06:07,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-21 16:06:07,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-06-21 16:06:07,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233280185] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-21 16:06:07,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-21 16:06:07,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-06-21 16:06:07,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305208744] [2024-06-21 16:06:07,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-21 16:06:07,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:06:07,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:06:07,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:06:07,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:06:07,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 97 [2024-06-21 16:06:07,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 53 transitions, 185 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:06:07,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:06:07,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 97 [2024-06-21 16:06:07,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:06:07,992 INFO L124 PetriNetUnfolderBase]: 771/1344 cut-off events. [2024-06-21 16:06:07,992 INFO L125 PetriNetUnfolderBase]: For 265/285 co-relation queries the response was YES. [2024-06-21 16:06:07,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3061 conditions, 1344 events. 771/1344 cut-off events. For 265/285 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5516 event pairs, 670 based on Foata normal form. 6/1196 useless extension candidates. Maximal degree in co-relation 3026. Up to 1306 conditions per place. [2024-06-21 16:06:07,997 INFO L140 encePairwiseOnDemand]: 80/97 looper letters, 36 selfloop transitions, 32 changer transitions 0/71 dead transitions. [2024-06-21 16:06:07,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 71 transitions, 377 flow [2024-06-21 16:06:07,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:06:07,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:06:07,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-21 16:06:07,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.16752577319587628 [2024-06-21 16:06:08,000 INFO L175 Difference]: Start difference. First operand has 48 places, 53 transitions, 185 flow. Second operand 8 states and 130 transitions. [2024-06-21 16:06:08,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 71 transitions, 377 flow [2024-06-21 16:06:08,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 71 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 16:06:08,003 INFO L231 Difference]: Finished difference. Result has 58 places, 71 transitions, 365 flow [2024-06-21 16:06:08,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=365, PETRI_PLACES=58, PETRI_TRANSITIONS=71} [2024-06-21 16:06:08,004 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -14 predicate places. [2024-06-21 16:06:08,004 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 71 transitions, 365 flow [2024-06-21 16:06:08,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:06:08,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:06:08,005 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:06:08,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-21 16:06:08,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-06-21 16:06:08,206 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)] === [2024-06-21 16:06:08,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:06:08,207 INFO L85 PathProgramCache]: Analyzing trace with hash 207506772, now seen corresponding path program 1 times [2024-06-21 16:06:08,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:06:08,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505903730] [2024-06-21 16:06:08,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:06:08,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:06:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:06:08,628 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-06-21 16:06:08,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:06:08,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505903730] [2024-06-21 16:06:08,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505903730] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-21 16:06:08,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116803587] [2024-06-21 16:06:08,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:06:08,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-21 16:06:08,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 16:06:08,631 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-21 16:06:08,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-21 16:06:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:06:09,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-21 16:06:09,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-21 16:06:09,182 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-06-21 16:06:09,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-21 16:06:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-06-21 16:06:09,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116803587] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-21 16:06:09,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-21 16:06:09,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-06-21 16:06:09,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144982511] [2024-06-21 16:06:09,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-21 16:06:09,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-06-21 16:06:09,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:06:09,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-06-21 16:06:09,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2024-06-21 16:06:09,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 97 [2024-06-21 16:06:09,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 71 transitions, 365 flow. Second operand has 17 states, 17 states have (on average 8.882352941176471) internal successors, (151), 17 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:06:09,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:06:09,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 97 [2024-06-21 16:06:09,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:06:09,653 INFO L124 PetriNetUnfolderBase]: 771/1356 cut-off events. [2024-06-21 16:06:09,653 INFO L125 PetriNetUnfolderBase]: For 284/304 co-relation queries the response was YES. [2024-06-21 16:06:09,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3173 conditions, 1356 events. 771/1356 cut-off events. For 284/304 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5521 event pairs, 670 based on Foata normal form. 11/1218 useless extension candidates. Maximal degree in co-relation 3095. Up to 1306 conditions per place. [2024-06-21 16:06:09,657 INFO L140 encePairwiseOnDemand]: 80/97 looper letters, 36 selfloop transitions, 44 changer transitions 0/83 dead transitions. [2024-06-21 16:06:09,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 83 transitions, 593 flow [2024-06-21 16:06:09,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-21 16:06:09,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-21 16:06:09,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 184 transitions. [2024-06-21 16:06:09,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.11855670103092783 [2024-06-21 16:06:09,659 INFO L175 Difference]: Start difference. First operand has 58 places, 71 transitions, 365 flow. Second operand 16 states and 184 transitions. [2024-06-21 16:06:09,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 83 transitions, 593 flow [2024-06-21 16:06:09,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 555 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-21 16:06:09,663 INFO L231 Difference]: Finished difference. Result has 73 places, 83 transitions, 509 flow [2024-06-21 16:06:09,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=509, PETRI_PLACES=73, PETRI_TRANSITIONS=83} [2024-06-21 16:06:09,664 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2024-06-21 16:06:09,664 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 83 transitions, 509 flow [2024-06-21 16:06:09,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.882352941176471) internal successors, (151), 17 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:06:09,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:06:09,665 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:06:09,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-21 16:06:09,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-06-21 16:06:09,882 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)] === [2024-06-21 16:06:09,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:06:09,882 INFO L85 PathProgramCache]: Analyzing trace with hash -356004322, now seen corresponding path program 2 times [2024-06-21 16:06:09,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:06:09,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518392832] [2024-06-21 16:06:09,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:06:09,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:06:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:06:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-21 16:06:10,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:06:10,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518392832] [2024-06-21 16:06:10,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518392832] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-21 16:06:10,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692103028] [2024-06-21 16:06:10,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-21 16:06:10,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-21 16:06:10,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 16:06:10,261 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-21 16:06:10,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-21 16:06:10,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-21 16:06:10,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-21 16:06:10,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-21 16:06:10,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-21 16:06:10,976 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-06-21 16:06:10,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-21 16:06:10,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692103028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:06:10,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-21 16:06:10,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2024-06-21 16:06:10,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329642656] [2024-06-21 16:06:10,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:06:10,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:06:10,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:06:10,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:06:10,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:06:10,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 97 [2024-06-21 16:06:10,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 83 transitions, 509 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:06:10,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:06:10,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 97 [2024-06-21 16:06:10,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:06:11,354 INFO L124 PetriNetUnfolderBase]: 837/1458 cut-off events. [2024-06-21 16:06:11,354 INFO L125 PetriNetUnfolderBase]: For 633/633 co-relation queries the response was YES. [2024-06-21 16:06:11,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3407 conditions, 1458 events. 837/1458 cut-off events. For 633/633 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6140 event pairs, 382 based on Foata normal form. 72/1380 useless extension candidates. Maximal degree in co-relation 3330. Up to 750 conditions per place. [2024-06-21 16:06:11,357 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 0 selfloop transitions, 0 changer transitions 113/113 dead transitions. [2024-06-21 16:06:11,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 113 transitions, 799 flow [2024-06-21 16:06:11,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:06:11,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:06:11,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-21 16:06:11,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19381443298969073 [2024-06-21 16:06:11,358 INFO L175 Difference]: Start difference. First operand has 73 places, 83 transitions, 509 flow. Second operand 5 states and 94 transitions. [2024-06-21 16:06:11,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 113 transitions, 799 flow [2024-06-21 16:06:11,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 113 transitions, 685 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-21 16:06:11,362 INFO L231 Difference]: Finished difference. Result has 68 places, 0 transitions, 0 flow [2024-06-21 16:06:11,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=68, PETRI_TRANSITIONS=0} [2024-06-21 16:06:11,363 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2024-06-21 16:06:11,363 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 0 transitions, 0 flow [2024-06-21 16:06:11,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:06:11,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-21 16:06:11,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-21 16:06:11,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-21 16:06:11,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-21 16:06:11,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-21 16:06:11,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-21 16:06:11,572 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-06-21 16:06:11,575 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 16:06:11,575 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 16:06:11,579 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-21 16:06:11,579 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-21 16:06:11,580 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 04:06:11 BasicIcfg [2024-06-21 16:06:11,580 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 16:06:11,581 INFO L158 Benchmark]: Toolchain (without parser) took 16173.84ms. Allocated memory was 151.0MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 109.4MB in the beginning and 884.3MB in the end (delta: -774.9MB). Peak memory consumption was 534.6MB. Max. memory is 16.1GB. [2024-06-21 16:06:11,581 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory was 120.9MB in the beginning and 120.7MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 16:06:11,581 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 151.0MB. Free memory is still 112.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 16:06:11,582 INFO L158 Benchmark]: CACSL2BoogieTranslator took 520.78ms. Allocated memory is still 151.0MB. Free memory was 108.9MB in the beginning and 83.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-21 16:06:11,582 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.48ms. Allocated memory is still 151.0MB. Free memory was 83.7MB in the beginning and 75.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-06-21 16:06:11,582 INFO L158 Benchmark]: Boogie Preprocessor took 203.78ms. Allocated memory is still 151.0MB. Free memory was 75.3MB in the beginning and 64.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-06-21 16:06:11,583 INFO L158 Benchmark]: RCFGBuilder took 3160.30ms. Allocated memory was 151.0MB in the beginning and 346.0MB in the end (delta: 195.0MB). Free memory was 64.9MB in the beginning and 240.2MB in the end (delta: -175.3MB). Peak memory consumption was 94.5MB. Max. memory is 16.1GB. [2024-06-21 16:06:11,583 INFO L158 Benchmark]: TraceAbstraction took 12190.53ms. Allocated memory was 346.0MB in the beginning and 1.5GB in the end (delta: 1.1GB). Free memory was 239.2MB in the beginning and 884.3MB in the end (delta: -645.1MB). Peak memory consumption was 467.4MB. Max. memory is 16.1GB. [2024-06-21 16:06:11,585 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory was 120.9MB in the beginning and 120.7MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 151.0MB. Free memory is still 112.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 520.78ms. Allocated memory is still 151.0MB. Free memory was 108.9MB in the beginning and 83.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.48ms. Allocated memory is still 151.0MB. Free memory was 83.7MB in the beginning and 75.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 203.78ms. Allocated memory is still 151.0MB. Free memory was 75.3MB in the beginning and 64.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 3160.30ms. Allocated memory was 151.0MB in the beginning and 346.0MB in the end (delta: 195.0MB). Free memory was 64.9MB in the beginning and 240.2MB in the end (delta: -175.3MB). Peak memory consumption was 94.5MB. Max. memory is 16.1GB. * TraceAbstraction took 12190.53ms. Allocated memory was 346.0MB in the beginning and 1.5GB in the end (delta: 1.1GB). Free memory was 239.2MB in the beginning and 884.3MB in the end (delta: -645.1MB). Peak memory consumption was 467.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 230]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 231]: 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, 120 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: 11.8s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 397 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 385 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1502 IncrementalHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 2 mSDtfsCounter, 1502 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=509occurred in iteration=7, InterpolantAutomatonStates: 46, 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: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 411 NumberOfCodeBlocks, 375 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 484 ConstructedInterpolants, 0 QuantifiedInterpolants, 1695 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1386 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 342/390 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! [2024-06-21 16:06:11,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE