./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/popl20-three-array-min.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c ./goblint.2024-05-21_14-57-05.files/protection/popl20-three-array-min.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-bcb38a6-m [2024-06-04 14:30:56,897 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:30:56,970 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:30:56,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:30:56,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:30:56,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:30:56,997 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:30:56,998 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:30:56,998 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:30:57,001 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:30:57,002 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:30:57,002 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:30:57,003 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:30:57,004 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:30:57,004 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:30:57,004 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:30:57,004 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:30:57,004 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:30:57,005 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:30:57,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:30:57,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:30:57,005 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:30:57,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:30:57,006 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:30:57,006 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:30:57,006 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:30:57,006 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:30:57,007 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:30:57,007 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:30:57,007 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:30:57,008 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:30:57,008 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:30:57,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:30:57,009 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:30:57,009 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:30:57,009 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:30:57,009 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:30:57,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:30:57,009 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:30:57,010 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:30:57,010 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:30:57,010 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:30:57,010 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:30:57,010 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:30:57,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:30:57,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:30:57,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:30:57,228 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:30:57,229 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:30:57,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/popl20-three-array-min.wvr.yml/witness.yml [2024-06-04 14:30:57,299 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:30:57,300 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:30:57,302 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2024-06-04 14:30:58,288 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:30:58,511 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:30:58,512 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2024-06-04 14:30:58,517 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c24ea89ab/fd41e4012acf49e3a09a96a0d2b4ab43/FLAG305f0b4a9 [2024-06-04 14:30:58,528 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c24ea89ab/fd41e4012acf49e3a09a96a0d2b4ab43 [2024-06-04 14:30:58,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:30:58,531 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:30:58,532 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:30:58,532 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:30:58,535 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:30:58,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:30:57" (1/2) ... [2024-06-04 14:30:58,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce4caa5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:30:58, skipping insertion in model container [2024-06-04 14:30:58,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:30:57" (1/2) ... [2024-06-04 14:30:58,538 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@31291939 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:30:58, skipping insertion in model container [2024-06-04 14:30:58,542 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:30:58" (2/2) ... [2024-06-04 14:30:58,543 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce4caa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:58, skipping insertion in model container [2024-06-04 14:30:58,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:30:58" (2/2) ... [2024-06-04 14:30:58,543 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:30:58,558 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:30:58,562 INFO L97 edCorrectnessWitness]: Location invariant before [L107-L107] ! multithreaded || 1 <= p [2024-06-04 14:30:58,562 INFO L97 edCorrectnessWitness]: Location invariant before [L109-L109] ! multithreaded || 1 <= p [2024-06-04 14:30:58,563 INFO L97 edCorrectnessWitness]: Location invariant before [L108-L108] ! multithreaded || 1 <= p [2024-06-04 14:30:58,563 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:30:58,563 INFO L106 edCorrectnessWitness]: ghost_update [L106-L106] multithreaded = 1; [2024-06-04 14:30:58,582 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:30:58,749 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:30:58,756 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:30:58,803 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:30:58,815 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:30:58,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:58 WrapperNode [2024-06-04 14:30:58,816 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:30:58,817 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:30:58,817 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:30:58,817 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:30:58,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:58" (1/1) ... [2024-06-04 14:30:58,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:58" (1/1) ... [2024-06-04 14:30:58,848 INFO L138 Inliner]: procedures = 25, calls = 43, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 230 [2024-06-04 14:30:58,849 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:30:58,849 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:30:58,849 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:30:58,850 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:30:58,858 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:58" (1/1) ... [2024-06-04 14:30:58,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:58" (1/1) ... [2024-06-04 14:30:58,861 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:58" (1/1) ... [2024-06-04 14:30:58,874 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-06-04 14:30:58,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:58" (1/1) ... [2024-06-04 14:30:58,874 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:58" (1/1) ... [2024-06-04 14:30:58,880 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:58" (1/1) ... [2024-06-04 14:30:58,883 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:58" (1/1) ... [2024-06-04 14:30:58,884 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:58" (1/1) ... [2024-06-04 14:30:58,886 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:58" (1/1) ... [2024-06-04 14:30:58,888 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:30:58,889 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:30:58,889 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:30:58,889 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:30:58,889 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:58" (1/1) ... [2024-06-04 14:30:58,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:30:58,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:30:58,911 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) [2024-06-04 14:30:58,933 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 [2024-06-04 14:30:58,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:30:58,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-04 14:30:58,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-04 14:30:58,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-04 14:30:58,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-04 14:30:58,959 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-04 14:30:58,959 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-04 14:30:58,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:30:58,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-04 14:30:58,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-04 14:30:58,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-04 14:30:58,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 14:30:58,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 14:30:58,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-04 14:30:58,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:30:58,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:30:58,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-04 14:30:58,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-04 14:30:58,963 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 14:30:59,068 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:30:59,070 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:30:59,337 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:30:59,338 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:30:59,619 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:30:59,619 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-04 14:30:59,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:30:59 BoogieIcfgContainer [2024-06-04 14:30:59,620 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:30:59,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:30:59,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:30:59,624 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:30:59,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:30:57" (1/4) ... [2024-06-04 14:30:59,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a00a5a5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:30:59, skipping insertion in model container [2024-06-04 14:30:59,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:30:58" (2/4) ... [2024-06-04 14:30:59,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a00a5a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:30:59, skipping insertion in model container [2024-06-04 14:30:59,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:58" (3/4) ... [2024-06-04 14:30:59,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a00a5a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:30:59, skipping insertion in model container [2024-06-04 14:30:59,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:30:59" (4/4) ... [2024-06-04 14:30:59,629 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2024-06-04 14:30:59,643 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:30:59,644 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-04 14:30:59,644 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:30:59,687 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-04 14:30:59,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 45 transitions, 111 flow [2024-06-04 14:30:59,758 INFO L124 PetriNetUnfolderBase]: 7/42 cut-off events. [2024-06-04 14:30:59,758 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-04 14:30:59,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 7/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-06-04 14:30:59,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 45 transitions, 111 flow [2024-06-04 14:30:59,766 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 40 transitions, 95 flow [2024-06-04 14:30:59,779 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:30:59,792 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;@2c978692, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:30:59,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-04 14:30:59,801 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:30:59,802 INFO L124 PetriNetUnfolderBase]: 4/13 cut-off events. [2024-06-04 14:30:59,802 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:30:59,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:30:59,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:30:59,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:30:59,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:30:59,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1249812076, now seen corresponding path program 1 times [2024-06-04 14:30:59,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:30:59,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531087943] [2024-06-04 14:30:59,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:30:59,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:30:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:31:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:31:00,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:31:00,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531087943] [2024-06-04 14:31:00,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531087943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:31:00,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:31:00,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:31:00,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971786601] [2024-06-04 14:31:00,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:31:00,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:31:00,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:31:00,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:31:00,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:31:00,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-04 14:31:00,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-06-04 14:31:00,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:31:00,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-04 14:31:00,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:31:00,366 INFO L124 PetriNetUnfolderBase]: 762/1217 cut-off events. [2024-06-04 14:31:00,366 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2024-06-04 14:31:00,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2334 conditions, 1217 events. 762/1217 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5214 event pairs, 237 based on Foata normal form. 36/1110 useless extension candidates. Maximal degree in co-relation 2058. Up to 671 conditions per place. [2024-06-04 14:31:00,389 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 43 selfloop transitions, 2 changer transitions 2/54 dead transitions. [2024-06-04 14:31:00,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 226 flow [2024-06-04 14:31:00,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:31:00,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:31:00,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-04 14:31:00,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-06-04 14:31:00,400 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 95 flow. Second operand 3 states and 80 transitions. [2024-06-04 14:31:00,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 226 flow [2024-06-04 14:31:00,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 212 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-04 14:31:00,405 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 95 flow [2024-06-04 14:31:00,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2024-06-04 14:31:00,409 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-06-04 14:31:00,409 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 95 flow [2024-06-04 14:31:00,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-06-04 14:31:00,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:31:00,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:31:00,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:31:00,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:31:00,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:31:00,411 INFO L85 PathProgramCache]: Analyzing trace with hash -613663849, now seen corresponding path program 1 times [2024-06-04 14:31:00,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:31:00,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730479853] [2024-06-04 14:31:00,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:31:00,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:31:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:31:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:31:00,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:31:00,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730479853] [2024-06-04 14:31:00,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730479853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:31:00,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:31:00,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:31:00,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096320228] [2024-06-04 14:31:00,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:31:00,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:31:00,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:31:00,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:31:00,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:31:00,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-04 14:31:00,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:31:00,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:31:00,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-04 14:31:00,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:31:00,714 INFO L124 PetriNetUnfolderBase]: 1047/1692 cut-off events. [2024-06-04 14:31:00,714 INFO L125 PetriNetUnfolderBase]: For 259/259 co-relation queries the response was YES. [2024-06-04 14:31:00,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3439 conditions, 1692 events. 1047/1692 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7928 event pairs, 385 based on Foata normal form. 54/1567 useless extension candidates. Maximal degree in co-relation 872. Up to 887 conditions per place. [2024-06-04 14:31:00,722 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 67 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2024-06-04 14:31:00,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 79 transitions, 330 flow [2024-06-04 14:31:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:31:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:31:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-06-04 14:31:00,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-04 14:31:00,725 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 95 flow. Second operand 5 states and 126 transitions. [2024-06-04 14:31:00,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 79 transitions, 330 flow [2024-06-04 14:31:00,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 79 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 14:31:00,726 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 132 flow [2024-06-04 14:31:00,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2024-06-04 14:31:00,727 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-06-04 14:31:00,727 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 132 flow [2024-06-04 14:31:00,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:31:00,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:31:00,728 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:31:00,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:31:00,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:31:00,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:31:00,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1441057580, now seen corresponding path program 1 times [2024-06-04 14:31:00,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:31:00,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215539534] [2024-06-04 14:31:00,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:31:00,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:31:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:31:00,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-04 14:31:00,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:31:00,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215539534] [2024-06-04 14:31:00,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215539534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:31:00,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:31:00,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:31:00,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201394908] [2024-06-04 14:31:00,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:31:00,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:31:00,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:31:00,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:31:00,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:31:00,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-04 14:31:00,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2024-06-04 14:31:00,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:31:00,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-04 14:31:00,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:31:01,030 INFO L124 PetriNetUnfolderBase]: 936/1586 cut-off events. [2024-06-04 14:31:01,030 INFO L125 PetriNetUnfolderBase]: For 904/919 co-relation queries the response was YES. [2024-06-04 14:31:01,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3658 conditions, 1586 events. 936/1586 cut-off events. For 904/919 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7702 event pairs, 649 based on Foata normal form. 0/1385 useless extension candidates. Maximal degree in co-relation 1374. Up to 1258 conditions per place. [2024-06-04 14:31:01,039 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 32 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-06-04 14:31:01,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 202 flow [2024-06-04 14:31:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:31:01,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:31:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-06-04 14:31:01,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-04 14:31:01,043 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 132 flow. Second operand 3 states and 70 transitions. [2024-06-04 14:31:01,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 202 flow [2024-06-04 14:31:01,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 195 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 14:31:01,046 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 137 flow [2024-06-04 14:31:01,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2024-06-04 14:31:01,047 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-04 14:31:01,047 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 137 flow [2024-06-04 14:31:01,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2024-06-04 14:31:01,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:31:01,048 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:31:01,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:31:01,048 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:31:01,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:31:01,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1756656004, now seen corresponding path program 1 times [2024-06-04 14:31:01,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:31:01,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914776061] [2024-06-04 14:31:01,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:31:01,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:31:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:31:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-04 14:31:01,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:31:01,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914776061] [2024-06-04 14:31:01,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914776061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:31:01,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:31:01,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:31:01,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273764383] [2024-06-04 14:31:01,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:31:01,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:31:01,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:31:01,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:31:01,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:31:01,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-04 14:31:01,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-06-04 14:31:01,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:31:01,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-04 14:31:01,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:31:01,280 INFO L124 PetriNetUnfolderBase]: 936/1588 cut-off events. [2024-06-04 14:31:01,280 INFO L125 PetriNetUnfolderBase]: For 654/669 co-relation queries the response was YES. [2024-06-04 14:31:01,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3556 conditions, 1588 events. 936/1588 cut-off events. For 654/669 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7692 event pairs, 649 based on Foata normal form. 1/1388 useless extension candidates. Maximal degree in co-relation 3541. Up to 1257 conditions per place. [2024-06-04 14:31:01,292 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 30 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2024-06-04 14:31:01,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 213 flow [2024-06-04 14:31:01,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:31:01,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:31:01,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-06-04 14:31:01,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-04 14:31:01,293 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 137 flow. Second operand 4 states and 86 transitions. [2024-06-04 14:31:01,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 213 flow [2024-06-04 14:31:01,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 209 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-04 14:31:01,296 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 161 flow [2024-06-04 14:31:01,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-06-04 14:31:01,297 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-06-04 14:31:01,297 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 161 flow [2024-06-04 14:31:01,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-06-04 14:31:01,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:31:01,297 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:31:01,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 14:31:01,298 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:31:01,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:31:01,298 INFO L85 PathProgramCache]: Analyzing trace with hash 990615843, now seen corresponding path program 1 times [2024-06-04 14:31:01,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:31:01,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578546472] [2024-06-04 14:31:01,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:31:01,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:31:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:31:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-04 14:31:01,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:31:01,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578546472] [2024-06-04 14:31:01,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578546472] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 14:31:01,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245143391] [2024-06-04 14:31:01,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:31:01,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 14:31:01,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:31:01,416 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) [2024-06-04 14:31:01,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-04 14:31:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:31:01,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-04 14:31:01,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-04 14:31:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-04 14:31:01,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-04 14:31:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-04 14:31:01,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245143391] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-04 14:31:01,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-04 14:31:01,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-06-04 14:31:01,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740732309] [2024-06-04 14:31:01,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-04 14:31:01,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:31:01,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:31:01,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:31:01,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:31:01,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-04 14:31:01,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 161 flow. Second operand has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 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) [2024-06-04 14:31:01,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:31:01,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-04 14:31:01,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:31:02,044 INFO L124 PetriNetUnfolderBase]: 1488/2445 cut-off events. [2024-06-04 14:31:02,044 INFO L125 PetriNetUnfolderBase]: For 620/659 co-relation queries the response was YES. [2024-06-04 14:31:02,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5363 conditions, 2445 events. 1488/2445 cut-off events. For 620/659 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11933 event pairs, 976 based on Foata normal form. 44/2202 useless extension candidates. Maximal degree in co-relation 4374. Up to 1643 conditions per place. [2024-06-04 14:31:02,056 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 31 selfloop transitions, 9 changer transitions 45/93 dead transitions. [2024-06-04 14:31:02,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 93 transitions, 482 flow [2024-06-04 14:31:02,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:31:02,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:31:02,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-04 14:31:02,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2024-06-04 14:31:02,059 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 161 flow. Second operand 9 states and 190 transitions. [2024-06-04 14:31:02,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 93 transitions, 482 flow [2024-06-04 14:31:02,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 93 transitions, 481 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 14:31:02,063 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 218 flow [2024-06-04 14:31:02,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2024-06-04 14:31:02,065 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-06-04 14:31:02,066 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 218 flow [2024-06-04 14:31:02,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 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) [2024-06-04 14:31:02,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:31:02,066 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:31:02,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-04 14:31:02,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 14:31:02,278 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:31:02,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:31:02,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1528956582, now seen corresponding path program 2 times [2024-06-04 14:31:02,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:31:02,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872943322] [2024-06-04 14:31:02,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:31:02,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:31:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:31:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-06-04 14:31:02,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:31:02,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872943322] [2024-06-04 14:31:02,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872943322] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 14:31:02,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922373928] [2024-06-04 14:31:02,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-04 14:31:02,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 14:31:02,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:31:02,373 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) [2024-06-04 14:31:02,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-04 14:31:02,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-04 14:31:02,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-04 14:31:02,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-04 14:31:02,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-04 14:31:02,583 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-04 14:31:02,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-04 14:31:02,698 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-04 14:31:02,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922373928] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-04 14:31:02,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-04 14:31:02,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 16 [2024-06-04 14:31:02,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185474375] [2024-06-04 14:31:02,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-04 14:31:02,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-06-04 14:31:02,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:31:02,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-06-04 14:31:02,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-06-04 14:31:02,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-04 14:31:02,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 218 flow. Second operand has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 states have internal predecessors, (197), 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) [2024-06-04 14:31:02,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:31:02,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-04 14:31:02,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:31:03,250 INFO L124 PetriNetUnfolderBase]: 1805/2761 cut-off events. [2024-06-04 14:31:03,250 INFO L125 PetriNetUnfolderBase]: For 951/951 co-relation queries the response was YES. [2024-06-04 14:31:03,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6759 conditions, 2761 events. 1805/2761 cut-off events. For 951/951 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 13063 event pairs, 323 based on Foata normal form. 116/2582 useless extension candidates. Maximal degree in co-relation 4161. Up to 464 conditions per place. [2024-06-04 14:31:03,258 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 0 selfloop transitions, 0 changer transitions 163/163 dead transitions. [2024-06-04 14:31:03,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 163 transitions, 911 flow [2024-06-04 14:31:03,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-04 14:31:03,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-04 14:31:03,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 297 transitions. [2024-06-04 14:31:03,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-04 14:31:03,260 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 218 flow. Second operand 15 states and 297 transitions. [2024-06-04 14:31:03,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 163 transitions, 911 flow [2024-06-04 14:31:03,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 163 transitions, 841 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-04 14:31:03,268 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2024-06-04 14:31:03,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2024-06-04 14:31:03,270 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2024-06-04 14:31:03,271 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2024-06-04 14:31:03,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 states have internal predecessors, (197), 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) [2024-06-04 14:31:03,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-04 14:31:03,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-04 14:31:03,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-04 14:31:03,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-04 14:31:03,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-04 14:31:03,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-04 14:31:03,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-06-04 14:31:03,485 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,SelfDestructingSolverStorable5 [2024-06-04 14:31:03,485 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-06-04 14:31:03,488 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 14:31:03,488 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 14:31:03,493 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-04 14:31:03,493 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-04 14:31:03,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 02:31:03 BasicIcfg [2024-06-04 14:31:03,495 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 14:31:03,495 INFO L158 Benchmark]: Toolchain (without parser) took 4964.52ms. Allocated memory was 132.1MB in the beginning and 272.6MB in the end (delta: 140.5MB). Free memory was 96.2MB in the beginning and 186.3MB in the end (delta: -90.1MB). Peak memory consumption was 172.4MB. Max. memory is 16.1GB. [2024-06-04 14:31:03,498 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 132.1MB. Free memory was 97.6MB in the beginning and 97.5MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:31:03,498 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 132.1MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:31:03,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.43ms. Allocated memory is still 132.1MB. Free memory was 96.2MB in the beginning and 80.4MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-06-04 14:31:03,498 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.33ms. Allocated memory is still 132.1MB. Free memory was 80.4MB in the beginning and 78.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 14:31:03,500 INFO L158 Benchmark]: Boogie Preprocessor took 38.80ms. Allocated memory is still 132.1MB. Free memory was 78.3MB in the beginning and 74.7MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-04 14:31:03,500 INFO L158 Benchmark]: RCFGBuilder took 731.05ms. Allocated memory was 132.1MB in the beginning and 188.7MB in the end (delta: 56.6MB). Free memory was 74.7MB in the beginning and 110.6MB in the end (delta: -36.0MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. [2024-06-04 14:31:03,502 INFO L158 Benchmark]: TraceAbstraction took 3873.26ms. Allocated memory was 188.7MB in the beginning and 272.6MB in the end (delta: 83.9MB). Free memory was 109.6MB in the beginning and 186.3MB in the end (delta: -76.7MB). Peak memory consumption was 127.5MB. Max. memory is 16.1GB. [2024-06-04 14:31:03,505 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 132.1MB. Free memory was 97.6MB in the beginning and 97.5MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 132.1MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.43ms. Allocated memory is still 132.1MB. Free memory was 96.2MB in the beginning and 80.4MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.33ms. Allocated memory is still 132.1MB. Free memory was 80.4MB in the beginning and 78.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.80ms. Allocated memory is still 132.1MB. Free memory was 78.3MB in the beginning and 74.7MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 731.05ms. Allocated memory was 132.1MB in the beginning and 188.7MB in the end (delta: 56.6MB). Free memory was 74.7MB in the beginning and 110.6MB in the end (delta: -36.0MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3873.26ms. Allocated memory was 188.7MB in the beginning and 272.6MB in the end (delta: 83.9MB). Free memory was 109.6MB in the beginning and 186.3MB in the end (delta: -76.7MB). Peak memory consumption was 127.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 107]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 108]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 109]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 58 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.8s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 384 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 349 mSDsluCounter, 191 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 182 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1271 IncrementalHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 9 mSDtfsCounter, 1271 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred in iteration=5, InterpolantAutomatonStates: 39, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 495 SizeOfPredicates, 6 NumberOfNonLiveVariables, 493 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 42/53 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-04 14:31:03,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE