./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/triangular-longer-1.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/triangular-longer-1.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longer-1.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/triangular-longer-1.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-76401ed-m [2024-06-20 17:44:52,459 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 17:44:52,504 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 17:44:52,508 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 17:44:52,508 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 17:44:52,526 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 17:44:52,527 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 17:44:52,527 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 17:44:52,527 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 17:44:52,528 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 17:44:52,528 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 17:44:52,529 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 17:44:52,529 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 17:44:52,530 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 17:44:52,530 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 17:44:52,530 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 17:44:52,531 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 17:44:52,531 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 17:44:52,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 17:44:52,532 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 17:44:52,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 17:44:52,533 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 17:44:52,533 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 17:44:52,533 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 17:44:52,534 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 17:44:52,534 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 17:44:52,534 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 17:44:52,534 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 17:44:52,535 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 17:44:52,535 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 17:44:52,535 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 17:44:52,536 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 17:44:52,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 17:44:52,536 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 17:44:52,536 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 17:44:52,537 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 17:44:52,537 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 17:44:52,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 17:44:52,537 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 17:44:52,538 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 17:44:52,538 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 17:44:52,538 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 17:44:52,538 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 17:44:52,538 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 17:44:52,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 17:44:52,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 17:44:52,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 17:44:52,822 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 17:44:52,822 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 17:44:52,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2024-06-20 17:44:53,833 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 17:44:54,012 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 17:44:54,013 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2024-06-20 17:44:54,024 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d704959a7/f1b75ca70cc84e6ea7c31096272f959d/FLAG96e85efc3 [2024-06-20 17:44:54,034 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d704959a7/f1b75ca70cc84e6ea7c31096272f959d [2024-06-20 17:44:54,036 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 17:44:54,043 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 17:44:54,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/triangular-longer-1.yml/witness.yml [2024-06-20 17:44:54,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 17:44:54,110 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 17:44:54,113 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 17:44:54,113 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 17:44:54,117 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 17:44:54,117 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 05:44:54" (1/2) ... [2024-06-20 17:44:54,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ef7feb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:44:54, skipping insertion in model container [2024-06-20 17:44:54,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 05:44:54" (1/2) ... [2024-06-20 17:44:54,119 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@74f31fe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:44:54, skipping insertion in model container [2024-06-20 17:44:54,120 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 05:44:54" (2/2) ... [2024-06-20 17:44:54,120 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ef7feb7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:54, skipping insertion in model container [2024-06-20 17:44:54,120 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 05:44:54" (2/2) ... [2024-06-20 17:44:54,121 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 17:44:54,148 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 17:44:54,149 INFO L97 edCorrectnessWitness]: Location invariant before [L715-L715] (((! multithreaded || ((((0 <= j && 4 <= j) && j % 2 == 0) && j != 0) && j != 1)) && (! multithreaded || ((-7LL + (long long )i) + (long long )j >= 0LL && (1LL - (long long )i) + (long long )j >= 0LL))) && (! multithreaded || ((((((((0 <= i && 0 <= j) && 3 <= i) && 4 <= j) && i % 2 == 1) && j % 2 == 0) && i != 0) && j != 0) && j != 1))) && (! multithreaded || (((0 <= i && 3 <= i) && i % 2 == 1) && i != 0)) [2024-06-20 17:44:54,149 INFO L97 edCorrectnessWitness]: Location invariant before [L714-L714] (((! multithreaded || ((((0 <= j && 4 <= j) && j % 2 == 0) && j != 0) && j != 1)) && (! multithreaded || ((-7LL + (long long )i) + (long long )j >= 0LL && (1LL - (long long )i) + (long long )j >= 0LL))) && (! multithreaded || ((((((((0 <= i && 0 <= j) && 3 <= i) && 4 <= j) && i % 2 == 1) && j % 2 == 0) && i != 0) && j != 0) && j != 1))) && (! multithreaded || (((0 <= i && 3 <= i) && i % 2 == 1) && i != 0)) [2024-06-20 17:44:54,150 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 17:44:54,150 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] multithreaded = 1; [2024-06-20 17:44:54,182 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 17:44:54,459 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 17:44:54,469 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 17:44:54,575 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 17:44:54,609 INFO L206 MainTranslator]: Completed translation [2024-06-20 17:44:54,612 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:54 WrapperNode [2024-06-20 17:44:54,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 17:44:54,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 17:44:54,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 17:44:54,614 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 17:44:54,619 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 20.06 05:44:54" (1/1) ... [2024-06-20 17:44:54,647 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 20.06 05:44:54" (1/1) ... [2024-06-20 17:44:54,662 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2024-06-20 17:44:54,663 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 17:44:54,664 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 17:44:54,664 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 17:44:54,664 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 17:44:54,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:54" (1/1) ... [2024-06-20 17:44:54,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:54" (1/1) ... [2024-06-20 17:44:54,678 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:54" (1/1) ... [2024-06-20 17:44:54,687 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-20 17:44:54,688 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:54" (1/1) ... [2024-06-20 17:44:54,688 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:54" (1/1) ... [2024-06-20 17:44:54,692 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:54" (1/1) ... [2024-06-20 17:44:54,694 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:54" (1/1) ... [2024-06-20 17:44:54,695 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:54" (1/1) ... [2024-06-20 17:44:54,695 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:54" (1/1) ... [2024-06-20 17:44:54,697 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 17:44:54,697 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 17:44:54,698 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 17:44:54,698 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 17:44:54,698 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:54" (1/1) ... [2024-06-20 17:44:54,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 17:44:54,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 17:44:54,719 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) [2024-06-20 17:44:54,722 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 [2024-06-20 17:44:54,749 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-20 17:44:54,749 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-20 17:44:54,749 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-20 17:44:54,749 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-20 17:44:54,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 17:44:54,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 17:44:54,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 17:44:54,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 17:44:54,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 17:44:54,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 17:44:54,751 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 17:44:54,847 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 17:44:54,848 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 17:44:55,101 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 17:44:55,101 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 17:44:55,253 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 17:44:55,254 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-20 17:44:55,254 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 05:44:55 BoogieIcfgContainer [2024-06-20 17:44:55,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 17:44:55,283 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 17:44:55,284 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 17:44:55,286 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 17:44:55,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 05:44:54" (1/4) ... [2024-06-20 17:44:55,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429a1ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 05:44:55, skipping insertion in model container [2024-06-20 17:44:55,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 05:44:54" (2/4) ... [2024-06-20 17:44:55,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429a1ebd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 05:44:55, skipping insertion in model container [2024-06-20 17:44:55,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:54" (3/4) ... [2024-06-20 17:44:55,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429a1ebd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 05:44:55, skipping insertion in model container [2024-06-20 17:44:55,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 05:44:55" (4/4) ... [2024-06-20 17:44:55,304 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2024-06-20 17:44:55,331 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 17:44:55,340 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-20 17:44:55,340 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 17:44:55,388 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 17:44:55,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 25 transitions, 58 flow [2024-06-20 17:44:55,458 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2024-06-20 17:44:55,459 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 17:44:55,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 23 events. 2/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-06-20 17:44:55,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 25 transitions, 58 flow [2024-06-20 17:44:55,464 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 23 transitions, 52 flow [2024-06-20 17:44:55,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 17:44:55,488 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;@1e658421, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 17:44:55,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-20 17:44:55,491 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 17:44:55,492 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-20 17:44:55,492 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 17:44:55,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:44:55,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 17:44:55,493 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)] === [2024-06-20 17:44:55,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:44:55,497 INFO L85 PathProgramCache]: Analyzing trace with hash 184288307, now seen corresponding path program 1 times [2024-06-20 17:44:55,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:44:55,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721566159] [2024-06-20 17:44:55,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:44:55,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:44:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:44:56,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:44:56,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:44:56,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721566159] [2024-06-20 17:44:56,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721566159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:44:56,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:44:56,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 17:44:56,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467717221] [2024-06-20 17:44:56,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:44:56,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 17:44:56,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:44:56,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 17:44:56,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 17:44:56,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 25 [2024-06-20 17:44:56,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:44:56,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:44:56,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 25 [2024-06-20 17:44:56,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:44:56,191 INFO L124 PetriNetUnfolderBase]: 172/314 cut-off events. [2024-06-20 17:44:56,191 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-20 17:44:56,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 314 events. 172/314 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1212 event pairs, 54 based on Foata normal form. 9/310 useless extension candidates. Maximal degree in co-relation 602. Up to 211 conditions per place. [2024-06-20 17:44:56,195 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 23 selfloop transitions, 3 changer transitions 2/34 dead transitions. [2024-06-20 17:44:56,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 34 transitions, 133 flow [2024-06-20 17:44:56,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 17:44:56,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 17:44:56,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-20 17:44:56,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.72 [2024-06-20 17:44:56,207 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 52 flow. Second operand 3 states and 54 transitions. [2024-06-20 17:44:56,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 34 transitions, 133 flow [2024-06-20 17:44:56,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 17:44:56,211 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 69 flow [2024-06-20 17:44:56,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2024-06-20 17:44:56,215 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-06-20 17:44:56,215 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 69 flow [2024-06-20 17:44:56,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:44:56,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:44:56,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:44:56,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 17:44:56,216 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)] === [2024-06-20 17:44:56,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:44:56,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1177819896, now seen corresponding path program 1 times [2024-06-20 17:44:56,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:44:56,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459748862] [2024-06-20 17:44:56,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:44:56,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:44:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:44:56,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:44:56,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:44:56,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459748862] [2024-06-20 17:44:56,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459748862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:44:56,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:44:56,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 17:44:56,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080735382] [2024-06-20 17:44:56,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:44:56,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 17:44:56,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:44:56,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 17:44:56,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 17:44:56,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 25 [2024-06-20 17:44:56,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-06-20 17:44:56,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:44:56,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 25 [2024-06-20 17:44:56,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:44:56,552 INFO L124 PetriNetUnfolderBase]: 160/307 cut-off events. [2024-06-20 17:44:56,553 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-06-20 17:44:56,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 307 events. 160/307 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1164 event pairs, 37 based on Foata normal form. 21/327 useless extension candidates. Maximal degree in co-relation 673. Up to 103 conditions per place. [2024-06-20 17:44:56,557 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 17 selfloop transitions, 2 changer transitions 19/44 dead transitions. [2024-06-20 17:44:56,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 193 flow [2024-06-20 17:44:56,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 17:44:56,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 17:44:56,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-06-20 17:44:56,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.648 [2024-06-20 17:44:56,560 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 69 flow. Second operand 5 states and 81 transitions. [2024-06-20 17:44:56,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 193 flow [2024-06-20 17:44:56,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 44 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 17:44:56,564 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 68 flow [2024-06-20 17:44:56,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2024-06-20 17:44:56,565 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-06-20 17:44:56,565 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 68 flow [2024-06-20 17:44:56,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-06-20 17:44:56,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:44:56,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:44:56,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 17:44:56,566 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 17:44:56,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:44:56,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2028359468, now seen corresponding path program 1 times [2024-06-20 17:44:56,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:44:56,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791470118] [2024-06-20 17:44:56,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:44:56,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:44:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:44:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:44:56,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:44:56,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791470118] [2024-06-20 17:44:56,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791470118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:44:56,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:44:56,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 17:44:56,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558189919] [2024-06-20 17:44:56,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:44:56,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 17:44:56,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:44:56,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 17:44:56,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-20 17:44:56,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 25 [2024-06-20 17:44:56,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-06-20 17:44:56,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:44:56,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 25 [2024-06-20 17:44:56,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:44:56,873 INFO L124 PetriNetUnfolderBase]: 151/295 cut-off events. [2024-06-20 17:44:56,873 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-20 17:44:56,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 295 events. 151/295 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1050 event pairs, 76 based on Foata normal form. 9/301 useless extension candidates. Maximal degree in co-relation 655. Up to 143 conditions per place. [2024-06-20 17:44:56,875 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 19 selfloop transitions, 3 changer transitions 5/29 dead transitions. [2024-06-20 17:44:56,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 138 flow [2024-06-20 17:44:56,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 17:44:56,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 17:44:56,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2024-06-20 17:44:56,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-06-20 17:44:56,878 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 68 flow. Second operand 4 states and 49 transitions. [2024-06-20 17:44:56,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 138 flow [2024-06-20 17:44:56,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 126 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-20 17:44:56,881 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 68 flow [2024-06-20 17:44:56,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2024-06-20 17:44:56,882 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2024-06-20 17:44:56,882 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 68 flow [2024-06-20 17:44:56,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-06-20 17:44:56,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:44:56,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:44:56,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 17:44:56,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 17:44:56,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:44:56,883 INFO L85 PathProgramCache]: Analyzing trace with hash 26489585, now seen corresponding path program 1 times [2024-06-20 17:44:56,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:44:56,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201423281] [2024-06-20 17:44:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:44:56,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:44:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:44:57,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:44:57,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:44:57,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201423281] [2024-06-20 17:44:57,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201423281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:44:57,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:44:57,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 17:44:57,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545159636] [2024-06-20 17:44:57,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:44:57,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 17:44:57,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:44:57,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 17:44:57,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-20 17:44:57,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 25 [2024-06-20 17:44:57,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-06-20 17:44:57,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:44:57,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 25 [2024-06-20 17:44:57,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:44:57,216 INFO L124 PetriNetUnfolderBase]: 154/295 cut-off events. [2024-06-20 17:44:57,217 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-06-20 17:44:57,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 295 events. 154/295 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 864 event pairs, 28 based on Foata normal form. 18/313 useless extension candidates. Maximal degree in co-relation 670. Up to 79 conditions per place. [2024-06-20 17:44:57,219 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 28 selfloop transitions, 5 changer transitions 7/43 dead transitions. [2024-06-20 17:44:57,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 208 flow [2024-06-20 17:44:57,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 17:44:57,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 17:44:57,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2024-06-20 17:44:57,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-20 17:44:57,223 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 68 flow. Second operand 6 states and 90 transitions. [2024-06-20 17:44:57,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 208 flow [2024-06-20 17:44:57,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 43 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 17:44:57,226 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 96 flow [2024-06-20 17:44:57,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2024-06-20 17:44:57,227 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-06-20 17:44:57,227 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 96 flow [2024-06-20 17:44:57,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-06-20 17:44:57,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:44:57,227 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:44:57,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 17:44:57,228 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)] === [2024-06-20 17:44:57,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:44:57,228 INFO L85 PathProgramCache]: Analyzing trace with hash -833124626, now seen corresponding path program 1 times [2024-06-20 17:44:57,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:44:57,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677662533] [2024-06-20 17:44:57,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:44:57,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:44:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:44:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:44:57,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:44:57,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677662533] [2024-06-20 17:44:57,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677662533] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-20 17:44:57,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566543882] [2024-06-20 17:44:57,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:44:57,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-20 17:44:57,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 17:44:57,402 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) [2024-06-20 17:44:57,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-20 17:44:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:44:57,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 15 conjunts are in the unsatisfiable core [2024-06-20 17:44:57,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-20 17:44:57,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:44:57,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-20 17:44:57,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:44:57,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566543882] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-20 17:44:57,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-20 17:44:57,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 19 [2024-06-20 17:44:57,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951572812] [2024-06-20 17:44:57,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-20 17:44:57,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-06-20 17:44:57,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:44:57,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-06-20 17:44:57,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2024-06-20 17:44:57,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 25 [2024-06-20 17:44:57,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 96 flow. Second operand has 21 states, 21 states have (on average 8.285714285714286) internal successors, (174), 21 states have internal predecessors, (174), 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) [2024-06-20 17:44:57,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:44:57,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 25 [2024-06-20 17:44:57,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:44:58,101 INFO L124 PetriNetUnfolderBase]: 163/319 cut-off events. [2024-06-20 17:44:58,104 INFO L125 PetriNetUnfolderBase]: For 418/418 co-relation queries the response was YES. [2024-06-20 17:44:58,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 319 events. 163/319 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 959 event pairs, 22 based on Foata normal form. 18/337 useless extension candidates. Maximal degree in co-relation 775. Up to 67 conditions per place. [2024-06-20 17:44:58,105 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2024-06-20 17:44:58,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 49 transitions, 260 flow [2024-06-20 17:44:58,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:44:58,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:44:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-20 17:44:58,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577777777777778 [2024-06-20 17:44:58,107 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 96 flow. Second operand 9 states and 103 transitions. [2024-06-20 17:44:58,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 49 transitions, 260 flow [2024-06-20 17:44:58,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 252 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-20 17:44:58,110 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-06-20 17:44:58,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-06-20 17:44:58,112 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 8 predicate places. [2024-06-20 17:44:58,112 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-06-20 17:44:58,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.285714285714286) internal successors, (174), 21 states have internal predecessors, (174), 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) [2024-06-20 17:44:58,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-20 17:44:58,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-20 17:44:58,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-20 17:44:58,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-20 17:44:58,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-20 17:44:58,327 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 [2024-06-20 17:44:58,328 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-06-20 17:44:58,330 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 17:44:58,331 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 17:44:58,337 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-20 17:44:58,338 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-20 17:44:58,338 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 05:44:58 BasicIcfg [2024-06-20 17:44:58,338 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 17:44:58,339 INFO L158 Benchmark]: Toolchain (without parser) took 4229.25ms. Allocated memory was 201.3MB in the beginning and 266.3MB in the end (delta: 65.0MB). Free memory was 126.1MB in the beginning and 206.4MB in the end (delta: -80.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 17:44:58,339 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 17:44:58,339 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 17:44:58,340 INFO L158 Benchmark]: CACSL2BoogieTranslator took 499.68ms. Allocated memory is still 201.3MB. Free memory was 126.1MB in the beginning and 101.1MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-20 17:44:58,340 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.90ms. Allocated memory is still 201.3MB. Free memory was 100.7MB in the beginning and 98.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 17:44:58,340 INFO L158 Benchmark]: Boogie Preprocessor took 33.29ms. Allocated memory is still 201.3MB. Free memory was 98.8MB in the beginning and 96.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 17:44:58,341 INFO L158 Benchmark]: RCFGBuilder took 556.56ms. Allocated memory is still 201.3MB. Free memory was 96.7MB in the beginning and 73.0MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-06-20 17:44:58,341 INFO L158 Benchmark]: TraceAbstraction took 3055.38ms. Allocated memory was 201.3MB in the beginning and 266.3MB in the end (delta: 65.0MB). Free memory was 170.0MB in the beginning and 206.4MB in the end (delta: -36.4MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2024-06-20 17:44:58,342 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 499.68ms. Allocated memory is still 201.3MB. Free memory was 126.1MB in the beginning and 101.1MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.90ms. Allocated memory is still 201.3MB. Free memory was 100.7MB in the beginning and 98.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.29ms. Allocated memory is still 201.3MB. Free memory was 98.8MB in the beginning and 96.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 556.56ms. Allocated memory is still 201.3MB. Free memory was 96.7MB in the beginning and 73.0MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3055.38ms. Allocated memory was 201.3MB in the beginning and 266.3MB in the end (delta: 65.0MB). Free memory was 170.0MB in the beginning and 206.4MB in the end (delta: -36.4MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 714]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 715]: 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, 36 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: 2.9s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 283 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 243 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 667 IncrementalHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 12 mSDtfsCounter, 667 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=4, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 808 SizeOfPredicates, 4 NumberOfNonLiveVariables, 98 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 3/12 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! [2024-06-20 17:44:58,374 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