./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-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.2024-05-21_14-57-05.files/mutex-meet/chl-chromosome-opt-symm.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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-chromosome-opt-symm.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/chl-chromosome-opt-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-cde23df-m [2024-06-14 14:14:56,666 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 14:14:56,723 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 14:14:56,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 14:14:56,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 14:14:56,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 14:14:56,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 14:14:56,771 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 14:14:56,772 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 14:14:56,776 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 14:14:56,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 14:14:56,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 14:14:56,778 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 14:14:56,779 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 14:14:56,779 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 14:14:56,779 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 14:14:56,780 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 14:14:56,780 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 14:14:56,780 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 14:14:56,780 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 14:14:56,781 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 14:14:56,784 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 14:14:56,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 14:14:56,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 14:14:56,785 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 14:14:56,785 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 14:14:56,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 14:14:56,786 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 14:14:56,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 14:14:56,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 14:14:56,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 14:14:56,788 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 14:14:56,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:14:56,788 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 14:14:56,788 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 14:14:56,789 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 14:14:56,789 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 14:14:56,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 14:14:56,789 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 14:14:56,789 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 14:14:56,790 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 14:14:56,790 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 14:14:56,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 14:14:56,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 14:14:57,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 14:14:57,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 14:14:57,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 14:14:57,047 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 14:14:57,047 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 14:14:57,048 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2024-06-14 14:14:58,312 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 14:14:58,509 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 14:14:58,510 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2024-06-14 14:14:58,518 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9adff0619/3483964b5f1d4129ab14d04621877b5d/FLAG653d9a9ee [2024-06-14 14:14:58,529 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9adff0619/3483964b5f1d4129ab14d04621877b5d [2024-06-14 14:14:58,531 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 14:14:58,532 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 14:14:58,532 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/chl-chromosome-opt-symm.wvr.yml/witness.yml [2024-06-14 14:14:58,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 14:14:58,628 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 14:14:58,631 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 14:14:58,631 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 14:14:58,636 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 14:14:58,637 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:14:58" (1/2) ... [2024-06-14 14:14:58,638 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2251bf22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:14:58, skipping insertion in model container [2024-06-14 14:14:58,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:14:58" (1/2) ... [2024-06-14 14:14:58,642 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7bb6be1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:14:58, skipping insertion in model container [2024-06-14 14:14:58,643 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:14:58" (2/2) ... [2024-06-14 14:14:58,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2251bf22 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:14:58, skipping insertion in model container [2024-06-14 14:14:58,643 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:14:58" (2/2) ... [2024-06-14 14:14:58,644 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 14:14:58,665 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 14:14:58,666 INFO L97 edCorrectnessWitness]: Location invariant before [L89-L89] (! multithreaded || ((((-128 <= res1 && -1 <= res1) && res1 <= 1) && res1 <= 127) && ((res1 == -1 || res1 == 0) || res1 == 1))) && (! multithreaded || ((((-128 <= res2 && -1 <= res2) && res2 <= 1) && res2 <= 127) && ((res2 == -1 || res2 == 0) || res2 == 1))) [2024-06-14 14:14:58,667 INFO L97 edCorrectnessWitness]: Location invariant before [L88-L88] (! multithreaded || ((((-128 <= res1 && -1 <= res1) && res1 <= 1) && res1 <= 127) && ((res1 == -1 || res1 == 0) || res1 == 1))) && (! multithreaded || ((((-128 <= res2 && -1 <= res2) && res2 <= 1) && res2 <= 127) && ((res2 == -1 || res2 == 0) || res2 == 1))) [2024-06-14 14:14:58,667 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 14:14:58,667 INFO L106 edCorrectnessWitness]: ghost_update [L87-L87] multithreaded = 1; [2024-06-14 14:14:58,689 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 14:14:58,862 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:14:58,872 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 14:14:58,939 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:14:58,963 INFO L206 MainTranslator]: Completed translation [2024-06-14 14:14:58,964 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:14:58 WrapperNode [2024-06-14 14:14:58,964 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 14:14:58,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 14:14:58,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 14:14:58,966 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 14:14:58,972 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 14.06 02:14:58" (1/1) ... [2024-06-14 14:14:58,989 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 14.06 02:14:58" (1/1) ... [2024-06-14 14:14:59,031 INFO L138 Inliner]: procedures = 23, calls = 26, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 176 [2024-06-14 14:14:59,032 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 14:14:59,033 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 14:14:59,033 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 14:14:59,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 14:14:59,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:14:58" (1/1) ... [2024-06-14 14:14:59,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:14:58" (1/1) ... [2024-06-14 14:14:59,058 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:14:58" (1/1) ... [2024-06-14 14:14:59,084 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-06-14 14:14:59,084 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:14:58" (1/1) ... [2024-06-14 14:14:59,084 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:14:58" (1/1) ... [2024-06-14 14:14:59,098 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:14:58" (1/1) ... [2024-06-14 14:14:59,102 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:14:58" (1/1) ... [2024-06-14 14:14:59,108 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:14:58" (1/1) ... [2024-06-14 14:14:59,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:14:58" (1/1) ... [2024-06-14 14:14:59,116 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 14:14:59,117 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 14:14:59,117 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 14:14:59,118 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 14:14:59,118 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:14:58" (1/1) ... [2024-06-14 14:14:59,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:14:59,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:14:59,147 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) [2024-06-14 14:14:59,173 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 [2024-06-14 14:14:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 14:14:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-14 14:14:59,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-14 14:14:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-14 14:14:59,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-14 14:14:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 14:14:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-14 14:14:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-14 14:14:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-14 14:14:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-14 14:14:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 14:14:59,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 14:14:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-14 14:14:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-14 14:14:59,195 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 14:14:59,315 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 14:14:59,317 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 14:14:59,622 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 14:14:59,623 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 14:14:59,826 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 14:14:59,827 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-14 14:14:59,827 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:14:59 BoogieIcfgContainer [2024-06-14 14:14:59,828 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 14:14:59,830 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 14:14:59,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 14:14:59,833 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 14:14:59,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 02:14:58" (1/4) ... [2024-06-14 14:14:59,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b414036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 02:14:59, skipping insertion in model container [2024-06-14 14:14:59,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:14:58" (2/4) ... [2024-06-14 14:14:59,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b414036 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 02:14:59, skipping insertion in model container [2024-06-14 14:14:59,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:14:58" (3/4) ... [2024-06-14 14:14:59,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b414036 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 02:14:59, skipping insertion in model container [2024-06-14 14:14:59,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:14:59" (4/4) ... [2024-06-14 14:14:59,840 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2024-06-14 14:14:59,857 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 14:14:59,857 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 14:14:59,857 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 14:14:59,907 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-14 14:14:59,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 32 transitions, 78 flow [2024-06-14 14:14:59,985 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-06-14 14:14:59,985 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-14 14:14:59,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 6/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-06-14 14:14:59,988 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 32 transitions, 78 flow [2024-06-14 14:14:59,992 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 28 transitions, 65 flow [2024-06-14 14:15:00,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 14:15:00,020 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;@24f2184c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 14:15:00,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 14:15:00,030 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 14:15:00,030 INFO L124 PetriNetUnfolderBase]: 4/14 cut-off events. [2024-06-14 14:15:00,030 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 14:15:00,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:15:00,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:15:00,032 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)] === [2024-06-14 14:15:00,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:15:00,036 INFO L85 PathProgramCache]: Analyzing trace with hash -493622988, now seen corresponding path program 1 times [2024-06-14 14:15:00,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:15:00,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461792683] [2024-06-14 14:15:00,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:15:00,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:15:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:15:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:15:00,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:15:00,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461792683] [2024-06-14 14:15:00,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461792683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:15:00,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:15:00,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 14:15:00,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748086766] [2024-06-14 14:15:00,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:15:00,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 14:15:00,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:15:00,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 14:15:00,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 14:15:00,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2024-06-14 14:15:00,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2024-06-14 14:15:00,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:15:00,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2024-06-14 14:15:00,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:15:00,735 INFO L124 PetriNetUnfolderBase]: 206/347 cut-off events. [2024-06-14 14:15:00,736 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-06-14 14:15:00,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 347 events. 206/347 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1168 event pairs, 81 based on Foata normal form. 25/293 useless extension candidates. Maximal degree in co-relation 643. Up to 173 conditions per place. [2024-06-14 14:15:00,740 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 39 selfloop transitions, 3 changer transitions 2/45 dead transitions. [2024-06-14 14:15:00,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 193 flow [2024-06-14 14:15:00,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 14:15:00,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 14:15:00,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-06-14 14:15:00,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-06-14 14:15:00,753 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 65 flow. Second operand 3 states and 55 transitions. [2024-06-14 14:15:00,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 193 flow [2024-06-14 14:15:00,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 45 transitions, 185 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 14:15:00,759 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 78 flow [2024-06-14 14:15:00,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2024-06-14 14:15:00,766 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2024-06-14 14:15:00,767 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 78 flow [2024-06-14 14:15:00,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2024-06-14 14:15:00,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:15:00,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:15:00,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 14:15:00,768 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)] === [2024-06-14 14:15:00,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:15:00,769 INFO L85 PathProgramCache]: Analyzing trace with hash 448091486, now seen corresponding path program 1 times [2024-06-14 14:15:00,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:15:00,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614325032] [2024-06-14 14:15:00,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:15:00,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:15:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:15:00,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:15:00,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:15:00,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614325032] [2024-06-14 14:15:00,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614325032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:15:00,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:15:00,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 14:15:00,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102555491] [2024-06-14 14:15:00,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:15:00,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 14:15:00,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:15:00,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 14:15:00,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 14:15:00,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:15:00,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2024-06-14 14:15:00,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:15:00,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:15:00,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:15:00,962 INFO L124 PetriNetUnfolderBase]: 166/293 cut-off events. [2024-06-14 14:15:00,962 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-06-14 14:15:00,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 293 events. 166/293 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 945 event pairs, 114 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 344. Up to 277 conditions per place. [2024-06-14 14:15:00,969 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 24 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2024-06-14 14:15:00,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 138 flow [2024-06-14 14:15:00,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 14:15:00,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 14:15:00,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2024-06-14 14:15:00,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-14 14:15:00,972 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 78 flow. Second operand 3 states and 43 transitions. [2024-06-14 14:15:00,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 138 flow [2024-06-14 14:15:00,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 14:15:00,977 INFO L231 Difference]: Finished difference. Result has 30 places, 31 transitions, 97 flow [2024-06-14 14:15:00,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=30, PETRI_TRANSITIONS=31} [2024-06-14 14:15:00,978 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-14 14:15:00,979 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 31 transitions, 97 flow [2024-06-14 14:15:00,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2024-06-14 14:15:00,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:15:00,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:15:00,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 14:15:00,983 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)] === [2024-06-14 14:15:00,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:15:00,984 INFO L85 PathProgramCache]: Analyzing trace with hash 2141834044, now seen corresponding path program 1 times [2024-06-14 14:15:00,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:15:00,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586414894] [2024-06-14 14:15:00,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:15:00,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:15:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:15:01,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-14 14:15:01,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:15:01,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586414894] [2024-06-14 14:15:01,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586414894] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-14 14:15:01,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16565666] [2024-06-14 14:15:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:15:01,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 14:15:01,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:15:01,092 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) [2024-06-14 14:15:01,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-14 14:15:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:15:01,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-14 14:15:01,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-14 14:15:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-14 14:15:01,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-14 14:15:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-14 14:15:01,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16565666] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-14 14:15:01,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-14 14:15:01,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-06-14 14:15:01,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632371398] [2024-06-14 14:15:01,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-14 14:15:01,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:15:01,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:15:01,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:15:01,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:15:01,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:15:01,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 97 flow. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2024-06-14 14:15:01,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:15:01,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:15:01,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:15:01,386 INFO L124 PetriNetUnfolderBase]: 166/299 cut-off events. [2024-06-14 14:15:01,386 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-06-14 14:15:01,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 299 events. 166/299 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 946 event pairs, 114 based on Foata normal form. 3/267 useless extension candidates. Maximal degree in co-relation 630. Up to 277 conditions per place. [2024-06-14 14:15:01,389 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 24 selfloop transitions, 10 changer transitions 0/37 dead transitions. [2024-06-14 14:15:01,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 189 flow [2024-06-14 14:15:01,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:15:01,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:15:01,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-06-14 14:15:01,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 14:15:01,393 INFO L175 Difference]: Start difference. First operand has 30 places, 31 transitions, 97 flow. Second operand 6 states and 68 transitions. [2024-06-14 14:15:01,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 189 flow [2024-06-14 14:15:01,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 14:15:01,396 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 159 flow [2024-06-14 14:15:01,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=159, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2024-06-14 14:15:01,397 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2024-06-14 14:15:01,398 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 159 flow [2024-06-14 14:15:01,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2024-06-14 14:15:01,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:15:01,398 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:15:01,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-06-14 14:15:01,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 14:15:01,613 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:15:01,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:15:01,613 INFO L85 PathProgramCache]: Analyzing trace with hash 920980446, now seen corresponding path program 2 times [2024-06-14 14:15:01,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:15:01,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409036988] [2024-06-14 14:15:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:15:01,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:15:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:15:01,787 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-06-14 14:15:01,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:15:01,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409036988] [2024-06-14 14:15:01,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409036988] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-14 14:15:01,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386143226] [2024-06-14 14:15:01,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-14 14:15:01,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 14:15:01,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:15:01,791 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) [2024-06-14 14:15:01,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-14 14:15:01,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-14 14:15:01,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-14 14:15:01,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-14 14:15:01,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-14 14:15:02,023 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-14 14:15:02,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 33 [2024-06-14 14:15:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-06-14 14:15:02,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-14 14:15:02,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386143226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:15:02,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-14 14:15:02,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-06-14 14:15:02,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397263564] [2024-06-14 14:15:02,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:15:02,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 14:15:02,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:15:02,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 14:15:02,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:15:02,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2024-06-14 14:15:02,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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) [2024-06-14 14:15:02,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:15:02,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2024-06-14 14:15:02,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:15:02,249 INFO L124 PetriNetUnfolderBase]: 244/421 cut-off events. [2024-06-14 14:15:02,249 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-06-14 14:15:02,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 421 events. 244/421 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1566 event pairs, 57 based on Foata normal form. 12/380 useless extension candidates. Maximal degree in co-relation 888. Up to 137 conditions per place. [2024-06-14 14:15:02,252 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 53 selfloop transitions, 6 changer transitions 6/66 dead transitions. [2024-06-14 14:15:02,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 66 transitions, 351 flow [2024-06-14 14:15:02,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:15:02,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:15:02,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-14 14:15:02,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-14 14:15:02,254 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 159 flow. Second operand 5 states and 74 transitions. [2024-06-14 14:15:02,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 66 transitions, 351 flow [2024-06-14 14:15:02,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 66 transitions, 335 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-14 14:15:02,257 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 164 flow [2024-06-14 14:15:02,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2024-06-14 14:15:02,258 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2024-06-14 14:15:02,258 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 164 flow [2024-06-14 14:15:02,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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) [2024-06-14 14:15:02,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:15:02,258 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:15:02,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-14 14:15:02,472 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,SelfDestructingSolverStorable3 [2024-06-14 14:15:02,473 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)] === [2024-06-14 14:15:02,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:15:02,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1716989621, now seen corresponding path program 1 times [2024-06-14 14:15:02,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:15:02,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879294495] [2024-06-14 14:15:02,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:15:02,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:15:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:15:02,628 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-06-14 14:15:02,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:15:02,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879294495] [2024-06-14 14:15:02,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879294495] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-14 14:15:02,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663508948] [2024-06-14 14:15:02,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:15:02,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 14:15:02,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:15:02,631 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) [2024-06-14 14:15:02,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-14 14:15:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:15:02,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-14 14:15:02,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-14 14:15:02,795 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-06-14 14:15:02,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-14 14:15:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-06-14 14:15:02,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663508948] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-14 14:15:02,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-14 14:15:02,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-06-14 14:15:02,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713387491] [2024-06-14 14:15:02,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-14 14:15:02,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:15:02,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:15:02,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:15:02,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:15:02,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:15:02,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 164 flow. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 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) [2024-06-14 14:15:02,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:15:02,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:15:02,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:15:02,931 INFO L124 PetriNetUnfolderBase]: 168/310 cut-off events. [2024-06-14 14:15:02,931 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2024-06-14 14:15:02,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 310 events. 168/310 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1007 event pairs, 114 based on Foata normal form. 1/309 useless extension candidates. Maximal degree in co-relation 719. Up to 286 conditions per place. [2024-06-14 14:15:02,934 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 25 selfloop transitions, 12 changer transitions 0/39 dead transitions. [2024-06-14 14:15:02,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 250 flow [2024-06-14 14:15:02,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:15:02,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:15:02,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-06-14 14:15:02,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 14:15:02,935 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 164 flow. Second operand 7 states and 70 transitions. [2024-06-14 14:15:02,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 250 flow [2024-06-14 14:15:02,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 240 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 14:15:02,938 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 200 flow [2024-06-14 14:15:02,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-14 14:15:02,939 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-14 14:15:02,939 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 200 flow [2024-06-14 14:15:02,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 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) [2024-06-14 14:15:02,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:15:02,940 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:15:02,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-14 14:15:03,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 14:15:03,160 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)] === [2024-06-14 14:15:03,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:15:03,160 INFO L85 PathProgramCache]: Analyzing trace with hash 991266221, now seen corresponding path program 2 times [2024-06-14 14:15:03,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:15:03,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513670724] [2024-06-14 14:15:03,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:15:03,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:15:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:15:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-06-14 14:15:03,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:15:03,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513670724] [2024-06-14 14:15:03,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513670724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:15:03,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:15:03,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 14:15:03,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048908086] [2024-06-14 14:15:03,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:15:03,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 14:15:03,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:15:03,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 14:15:03,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-14 14:15:03,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2024-06-14 14:15:03,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-06-14 14:15:03,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:15:03,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2024-06-14 14:15:03,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:15:03,556 INFO L124 PetriNetUnfolderBase]: 201/362 cut-off events. [2024-06-14 14:15:03,556 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-06-14 14:15:03,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 896 conditions, 362 events. 201/362 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1223 event pairs, 60 based on Foata normal form. 10/372 useless extension candidates. Maximal degree in co-relation 818. Up to 152 conditions per place. [2024-06-14 14:15:03,558 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 47 selfloop transitions, 5 changer transitions 4/57 dead transitions. [2024-06-14 14:15:03,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 359 flow [2024-06-14 14:15:03,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:15:03,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:15:03,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 55 transitions. [2024-06-14 14:15:03,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4296875 [2024-06-14 14:15:03,560 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 200 flow. Second operand 4 states and 55 transitions. [2024-06-14 14:15:03,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 359 flow [2024-06-14 14:15:03,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 335 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 14:15:03,563 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 202 flow [2024-06-14 14:15:03,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-06-14 14:15:03,566 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2024-06-14 14:15:03,566 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 202 flow [2024-06-14 14:15:03,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-06-14 14:15:03,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:15:03,567 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:15:03,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 14:15:03,567 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)] === [2024-06-14 14:15:03,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:15:03,568 INFO L85 PathProgramCache]: Analyzing trace with hash 368551577, now seen corresponding path program 1 times [2024-06-14 14:15:03,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:15:03,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685951138] [2024-06-14 14:15:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:15:03,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:15:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:15:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-06-14 14:15:04,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:15:04,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685951138] [2024-06-14 14:15:04,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685951138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:15:04,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:15:04,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:15:04,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318919080] [2024-06-14 14:15:04,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:15:04,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:15:04,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:15:04,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:15:04,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:15:04,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2024-06-14 14:15:04,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:15:04,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:15:04,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2024-06-14 14:15:04,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:15:04,251 INFO L124 PetriNetUnfolderBase]: 129/236 cut-off events. [2024-06-14 14:15:04,251 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-06-14 14:15:04,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 236 events. 129/236 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 665 event pairs, 8 based on Foata normal form. 4/240 useless extension candidates. Maximal degree in co-relation 610. Up to 96 conditions per place. [2024-06-14 14:15:04,252 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2024-06-14 14:15:04,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 57 transitions, 359 flow [2024-06-14 14:15:04,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:15:04,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:15:04,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 61 transitions. [2024-06-14 14:15:04,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3177083333333333 [2024-06-14 14:15:04,254 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 202 flow. Second operand 6 states and 61 transitions. [2024-06-14 14:15:04,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 57 transitions, 359 flow [2024-06-14 14:15:04,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 348 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 14:15:04,256 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2024-06-14 14:15:04,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2024-06-14 14:15:04,257 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2024-06-14 14:15:04,257 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2024-06-14 14:15:04,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:15:04,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 14:15:04,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 14:15:04,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 14:15:04,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 14:15:04,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 14:15:04,261 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-06-14 14:15:04,264 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 14:15:04,264 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 14:15:04,267 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 14:15:04,267 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 14:15:04,268 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 02:15:04 BasicIcfg [2024-06-14 14:15:04,268 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 14:15:04,269 INFO L158 Benchmark]: Toolchain (without parser) took 5640.88ms. Allocated memory was 163.6MB in the beginning and 251.7MB in the end (delta: 88.1MB). Free memory was 106.3MB in the beginning and 139.1MB in the end (delta: -32.8MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. [2024-06-14 14:15:04,269 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 163.6MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 14:15:04,269 INFO L158 Benchmark]: Witness Parser took 0.22ms. Allocated memory is still 163.6MB. Free memory is still 109.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 14:15:04,270 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.79ms. Allocated memory is still 163.6MB. Free memory was 106.3MB in the beginning and 91.1MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-06-14 14:15:04,270 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.30ms. Allocated memory is still 163.6MB. Free memory was 91.1MB in the beginning and 89.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 14:15:04,270 INFO L158 Benchmark]: Boogie Preprocessor took 83.26ms. Allocated memory is still 163.6MB. Free memory was 89.0MB in the beginning and 86.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 14:15:04,271 INFO L158 Benchmark]: RCFGBuilder took 710.32ms. Allocated memory is still 163.6MB. Free memory was 86.1MB in the beginning and 96.0MB in the end (delta: -9.8MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2024-06-14 14:15:04,271 INFO L158 Benchmark]: TraceAbstraction took 4438.39ms. Allocated memory was 163.6MB in the beginning and 251.7MB in the end (delta: 88.1MB). Free memory was 95.1MB in the beginning and 139.1MB in the end (delta: -44.0MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. [2024-06-14 14:15:04,272 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 163.6MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.22ms. Allocated memory is still 163.6MB. Free memory is still 109.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.79ms. Allocated memory is still 163.6MB. Free memory was 106.3MB in the beginning and 91.1MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.30ms. Allocated memory is still 163.6MB. Free memory was 91.1MB in the beginning and 89.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.26ms. Allocated memory is still 163.6MB. Free memory was 89.0MB in the beginning and 86.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 710.32ms. Allocated memory is still 163.6MB. Free memory was 86.1MB in the beginning and 96.0MB in the end (delta: -9.8MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4438.39ms. Allocated memory was 163.6MB in the beginning and 251.7MB in the end (delta: 88.1MB). Free memory was 95.1MB in the beginning and 139.1MB in the end (delta: -44.0MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 88]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 89]: 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, 39 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: 4.3s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 174 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 165 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 566 IncrementalHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 2 mSDtfsCounter, 566 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=6, InterpolantAutomatonStates: 34, 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, 1.8s InterpolantComputationTime, 178 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 610 SizeOfPredicates, 9 NumberOfNonLiveVariables, 481 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 123/166 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! [2024-06-14 14:15:04,296 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