./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-misc-2-unrolled.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3d25acf6 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/parallel-misc-2-unrolled.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-misc-2-unrolled.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 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-3d25acf-m [2024-01-30 14:23:56,548 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:23:56,605 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:23:56,610 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:23:56,611 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:23:56,627 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:23:56,628 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:23:56,628 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:23:56,628 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:23:56,629 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:23:56,629 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:23:56,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:23:56,629 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:23:56,630 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:23:56,630 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:23:56,630 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:23:56,630 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:23:56,631 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:23:56,631 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:23:56,631 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:23:56,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:23:56,634 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:23:56,634 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:23:56,634 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:23:56,635 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:23:56,635 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:23:56,635 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:23:56,635 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:23:56,635 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:23:56,636 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:23:56,636 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:23:56,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:23:56,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:23:56,636 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:23:56,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:23:56,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:23:56,637 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:23:56,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:23:56,637 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:23:56,638 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:23:56,638 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:23:56,641 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:23:56,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:23:56,641 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:23:56,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:23:56,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:23:56,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:23:56,856 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:23:56,856 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:23:56,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-misc-2-unrolled.wvr.yml/witness.yml [2024-01-30 14:23:56,970 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:23:56,971 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:23:56,971 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2024-01-30 14:23:57,938 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:23:58,122 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:23:58,124 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2024-01-30 14:23:58,152 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d98ebf46/12665e8ff8344f3e8335eeea014f0426/FLAGfe19a6ca2 [2024-01-30 14:23:58,162 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d98ebf46/12665e8ff8344f3e8335eeea014f0426 [2024-01-30 14:23:58,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:23:58,163 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:23:58,164 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:23:58,164 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:23:58,168 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:23:58,168 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:23:56" (1/2) ... [2024-01-30 14:23:58,169 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@258a2a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:58, skipping insertion in model container [2024-01-30 14:23:58,169 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:23:56" (1/2) ... [2024-01-30 14:23:58,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7fd735e9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:58, skipping insertion in model container [2024-01-30 14:23:58,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:23:58" (2/2) ... [2024-01-30 14:23:58,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@258a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:58, skipping insertion in model container [2024-01-30 14:23:58,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:23:58" (2/2) ... [2024-01-30 14:23:58,171 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:23:58,192 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:23:58,193 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,194 INFO L98 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,194 INFO L98 nessWitnessExtractor]: Location invariant before [L76-L76] N == 0U [2024-01-30 14:23:58,194 INFO L98 nessWitnessExtractor]: Location invariant before [L47-L47] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,194 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] ((i1 == 0U) && (i2 == 0U)) && (N == 0U) [2024-01-30 14:23:58,194 INFO L98 nessWitnessExtractor]: Location invariant before [L63-L63] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,194 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] (((pos == 0U) && (i1 == 0U)) && (i2 == 0U)) && (N == 0U) [2024-01-30 14:23:58,195 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,195 INFO L98 nessWitnessExtractor]: Loop invariant at [L40-L49] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,195 INFO L98 nessWitnessExtractor]: Location invariant before [L75-L75] (i2 == 0U) && (N == 0U) [2024-01-30 14:23:58,195 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,195 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,195 INFO L98 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,196 INFO L98 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,196 INFO L98 nessWitnessExtractor]: Location invariant before [L44-L44] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,196 INFO L98 nessWitnessExtractor]: Location invariant before [L41-L41] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,196 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,196 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,196 INFO L98 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,197 INFO L98 nessWitnessExtractor]: Location invariant before [L46-L46] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,197 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] (N == 0U) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:23:58,197 INFO L98 nessWitnessExtractor]: Location invariant before [L56-L56] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,197 INFO L98 nessWitnessExtractor]: Loop invariant at [L55-L64] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,197 INFO L98 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-01-30 14:23:58,215 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:23:58,396 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c[2358,2371] [2024-01-30 14:23:58,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:23:58,413 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-30 14:23:58,469 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c[2358,2371] [2024-01-30 14:23:58,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:23:58,483 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:23:58,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:58 WrapperNode [2024-01-30 14:23:58,484 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:23:58,485 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:23:58,486 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:23:58,486 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:23:58,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:58" (1/1) ... [2024-01-30 14:23:58,506 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:58" (1/1) ... [2024-01-30 14:23:58,527 INFO L138 Inliner]: procedures = 20, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2024-01-30 14:23:58,528 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:23:58,528 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:23:58,529 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:23:58,529 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:23:58,536 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:58" (1/1) ... [2024-01-30 14:23:58,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:58" (1/1) ... [2024-01-30 14:23:58,548 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:58" (1/1) ... [2024-01-30 14:23:58,566 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-30 14:23:58,566 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:58" (1/1) ... [2024-01-30 14:23:58,567 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:58" (1/1) ... [2024-01-30 14:23:58,576 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:58" (1/1) ... [2024-01-30 14:23:58,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:58" (1/1) ... [2024-01-30 14:23:58,583 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:58" (1/1) ... [2024-01-30 14:23:58,584 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:58" (1/1) ... [2024-01-30 14:23:58,586 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:23:58,587 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:23:58,588 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:23:58,588 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:23:58,589 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:58" (1/1) ... [2024-01-30 14:23:58,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:23:58,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:23:58,650 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) [2024-01-30 14:23:58,670 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 [2024-01-30 14:23:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:23:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-30 14:23:58,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-30 14:23:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-30 14:23:58,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-30 14:23:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:23:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:23:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:23:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:23:58,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:23:58,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:23:58,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:23:58,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-30 14:23:58,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-30 14:23:58,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:23:58,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:23:58,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:23:58,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:23:58,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:23:58,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:23:58,687 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:23:58,785 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:23:58,788 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:23:59,020 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:23:59,020 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:23:59,119 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:23:59,119 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-30 14:23:59,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:23:59 BoogieIcfgContainer [2024-01-30 14:23:59,119 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:23:59,123 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:23:59,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:23:59,125 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:23:59,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:23:56" (1/4) ... [2024-01-30 14:23:59,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4b9403 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:23:59, skipping insertion in model container [2024-01-30 14:23:59,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:23:58" (2/4) ... [2024-01-30 14:23:59,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4b9403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:23:59, skipping insertion in model container [2024-01-30 14:23:59,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:58" (3/4) ... [2024-01-30 14:23:59,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4b9403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:23:59, skipping insertion in model container [2024-01-30 14:23:59,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:23:59" (4/4) ... [2024-01-30 14:23:59,127 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled.wvr.c [2024-01-30 14:23:59,142 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:23:59,142 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2024-01-30 14:23:59,142 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:23:59,196 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-30 14:23:59,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 148 flow [2024-01-30 14:23:59,264 INFO L124 PetriNetUnfolderBase]: 2/65 cut-off events. [2024-01-30 14:23:59,264 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-30 14:23:59,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 65 events. 2/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 175 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2024-01-30 14:23:59,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 148 flow [2024-01-30 14:23:59,274 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 64 transitions, 140 flow [2024-01-30 14:23:59,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:23:59,295 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;@2ecb118c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:23:59,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2024-01-30 14:23:59,298 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:23:59,298 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:23:59,299 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:23:59,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:23:59,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:23:59,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-30 14:23:59,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:23:59,304 INFO L85 PathProgramCache]: Analyzing trace with hash 10973, now seen corresponding path program 1 times [2024-01-30 14:23:59,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:23:59,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511362358] [2024-01-30 14:23:59,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:23:59,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:23:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:23:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:23:59,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:23:59,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511362358] [2024-01-30 14:23:59,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511362358] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:23:59,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:23:59,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:23:59,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107256723] [2024-01-30 14:23:59,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:23:59,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:23:59,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:23:59,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:23:59,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:23:59,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 67 [2024-01-30 14:23:59,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-01-30 14:23:59,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:23:59,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 67 [2024-01-30 14:23:59,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:23:59,898 INFO L124 PetriNetUnfolderBase]: 412/920 cut-off events. [2024-01-30 14:23:59,898 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-01-30 14:23:59,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1636 conditions, 920 events. 412/920 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5874 event pairs, 327 based on Foata normal form. 0/604 useless extension candidates. Maximal degree in co-relation 1505. Up to 677 conditions per place. [2024-01-30 14:23:59,906 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 33 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-01-30 14:23:59,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 202 flow [2024-01-30 14:23:59,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:23:59,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:23:59,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-01-30 14:23:59,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5970149253731343 [2024-01-30 14:23:59,918 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 140 flow. Second operand 3 states and 120 transitions. [2024-01-30 14:23:59,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 202 flow [2024-01-30 14:23:59,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 60 transitions, 194 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:23:59,926 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 128 flow [2024-01-30 14:23:59,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-01-30 14:23:59,930 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -6 predicate places. [2024-01-30 14:23:59,931 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 128 flow [2024-01-30 14:23:59,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-01-30 14:23:59,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:23:59,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-30 14:23:59,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:23:59,932 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-30 14:23:59,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:23:59,932 INFO L85 PathProgramCache]: Analyzing trace with hash 340483, now seen corresponding path program 1 times [2024-01-30 14:23:59,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:23:59,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53309546] [2024-01-30 14:23:59,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:23:59,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:23:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:23:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:23:59,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:23:59,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53309546] [2024-01-30 14:23:59,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53309546] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:23:59,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:23:59,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:23:59,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982041894] [2024-01-30 14:23:59,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:23:59,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:23:59,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:23:59,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:23:59,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:24:00,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 67 [2024-01-30 14:24:00,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-01-30 14:24:00,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:24:00,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 67 [2024-01-30 14:24:00,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:24:00,187 INFO L124 PetriNetUnfolderBase]: 412/919 cut-off events. [2024-01-30 14:24:00,187 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-01-30 14:24:00,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1612 conditions, 919 events. 412/919 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5894 event pairs, 327 based on Foata normal form. 0/604 useless extension candidates. Maximal degree in co-relation 1603. Up to 675 conditions per place. [2024-01-30 14:24:00,193 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 32 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-01-30 14:24:00,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 194 flow [2024-01-30 14:24:00,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:24:00,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:24:00,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-01-30 14:24:00,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5920398009950248 [2024-01-30 14:24:00,198 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 128 flow. Second operand 3 states and 119 transitions. [2024-01-30 14:24:00,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 194 flow [2024-01-30 14:24:00,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:24:00,201 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 126 flow [2024-01-30 14:24:00,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-01-30 14:24:00,202 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -7 predicate places. [2024-01-30 14:24:00,202 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 126 flow [2024-01-30 14:24:00,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-01-30 14:24:00,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:24:00,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-30 14:24:00,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:24:00,203 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-30 14:24:00,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:24:00,204 INFO L85 PathProgramCache]: Analyzing trace with hash 10555348, now seen corresponding path program 1 times [2024-01-30 14:24:00,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:24:00,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097594489] [2024-01-30 14:24:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:24:00,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:24:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:24:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:24:00,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:24:00,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097594489] [2024-01-30 14:24:00,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097594489] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:24:00,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:24:00,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:24:00,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268337605] [2024-01-30 14:24:00,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:24:00,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:24:00,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:24:00,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:24:00,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:24:00,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-01-30 14:24:00,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:24:00,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:24:00,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-01-30 14:24:00,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:24:00,373 INFO L124 PetriNetUnfolderBase]: 412/918 cut-off events. [2024-01-30 14:24:00,374 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-01-30 14:24:00,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1610 conditions, 918 events. 412/918 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5826 event pairs, 327 based on Foata normal form. 0/604 useless extension candidates. Maximal degree in co-relation 1599. Up to 673 conditions per place. [2024-01-30 14:24:00,379 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 31 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-01-30 14:24:00,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 58 transitions, 190 flow [2024-01-30 14:24:00,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:24:00,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:24:00,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-01-30 14:24:00,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6019900497512438 [2024-01-30 14:24:00,383 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 126 flow. Second operand 3 states and 121 transitions. [2024-01-30 14:24:00,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 58 transitions, 190 flow [2024-01-30 14:24:00,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:24:00,385 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 124 flow [2024-01-30 14:24:00,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-01-30 14:24:00,386 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -8 predicate places. [2024-01-30 14:24:00,387 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 124 flow [2024-01-30 14:24:00,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:24:00,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:24:00,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-30 14:24:00,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:24:00,388 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-30 14:24:00,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:24:00,388 INFO L85 PathProgramCache]: Analyzing trace with hash 327216169, now seen corresponding path program 1 times [2024-01-30 14:24:00,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:24:00,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132599378] [2024-01-30 14:24:00,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:24:00,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:24:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:24:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:24:00,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:24:00,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132599378] [2024-01-30 14:24:00,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132599378] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:24:00,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:24:00,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:24:00,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368256531] [2024-01-30 14:24:00,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:24:00,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:24:00,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:24:00,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:24:00,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:24:00,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 67 [2024-01-30 14:24:00,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-01-30 14:24:00,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:24:00,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 67 [2024-01-30 14:24:00,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:24:00,561 INFO L124 PetriNetUnfolderBase]: 421/1015 cut-off events. [2024-01-30 14:24:00,562 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-01-30 14:24:00,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1785 conditions, 1015 events. 421/1015 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6775 event pairs, 177 based on Foata normal form. 0/744 useless extension candidates. Maximal degree in co-relation 1772. Up to 401 conditions per place. [2024-01-30 14:24:00,566 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 46 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2024-01-30 14:24:00,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 74 transitions, 257 flow [2024-01-30 14:24:00,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:24:00,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:24:00,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2024-01-30 14:24:00,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7064676616915423 [2024-01-30 14:24:00,569 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 124 flow. Second operand 3 states and 142 transitions. [2024-01-30 14:24:00,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 74 transitions, 257 flow [2024-01-30 14:24:00,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 74 transitions, 253 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:24:00,571 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 131 flow [2024-01-30 14:24:00,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-01-30 14:24:00,572 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -8 predicate places. [2024-01-30 14:24:00,573 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 131 flow [2024-01-30 14:24:00,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-01-30 14:24:00,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:24:00,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:24:00,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-30 14:24:00,573 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-30 14:24:00,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:24:00,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1478444760, now seen corresponding path program 1 times [2024-01-30 14:24:00,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:24:00,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576416526] [2024-01-30 14:24:00,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:24:00,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:24:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:24:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:24:00,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:24:00,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576416526] [2024-01-30 14:24:00,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576416526] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:24:00,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:24:00,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:24:00,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730417740] [2024-01-30 14:24:00,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:24:00,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:24:00,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:24:00,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:24:00,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:24:00,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 67 [2024-01-30 14:24:00,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2024-01-30 14:24:00,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:24:00,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 67 [2024-01-30 14:24:00,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:24:00,794 INFO L124 PetriNetUnfolderBase]: 352/763 cut-off events. [2024-01-30 14:24:00,795 INFO L125 PetriNetUnfolderBase]: For 66/68 co-relation queries the response was YES. [2024-01-30 14:24:00,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 763 events. 352/763 cut-off events. For 66/68 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4394 event pairs, 10 based on Foata normal form. 84/767 useless extension candidates. Maximal degree in co-relation 676. Up to 590 conditions per place. [2024-01-30 14:24:00,798 INFO L140 encePairwiseOnDemand]: 56/67 looper letters, 38 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-01-30 14:24:00,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 216 flow [2024-01-30 14:24:00,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:24:00,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:24:00,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-01-30 14:24:00,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5559701492537313 [2024-01-30 14:24:00,799 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 131 flow. Second operand 4 states and 149 transitions. [2024-01-30 14:24:00,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 216 flow [2024-01-30 14:24:00,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:24:00,802 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 111 flow [2024-01-30 14:24:00,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2024-01-30 14:24:00,804 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -16 predicate places. [2024-01-30 14:24:00,804 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 111 flow [2024-01-30 14:24:00,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2024-01-30 14:24:00,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:24:00,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:24:00,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-30 14:24:00,805 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-30 14:24:00,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:24:00,806 INFO L85 PathProgramCache]: Analyzing trace with hash 847686751, now seen corresponding path program 1 times [2024-01-30 14:24:00,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:24:00,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508732764] [2024-01-30 14:24:00,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:24:00,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:24:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:24:00,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:24:00,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:24:00,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508732764] [2024-01-30 14:24:00,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508732764] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:24:00,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:24:00,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:24:00,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876557417] [2024-01-30 14:24:00,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:24:00,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:24:00,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:24:00,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:24:00,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:24:00,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 67 [2024-01-30 14:24:00,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2024-01-30 14:24:00,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:24:00,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 67 [2024-01-30 14:24:00,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:24:00,982 INFO L124 PetriNetUnfolderBase]: 286/621 cut-off events. [2024-01-30 14:24:00,982 INFO L125 PetriNetUnfolderBase]: For 30/38 co-relation queries the response was YES. [2024-01-30 14:24:00,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 621 events. 286/621 cut-off events. For 30/38 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3288 event pairs, 104 based on Foata normal form. 96/696 useless extension candidates. Maximal degree in co-relation 1144. Up to 435 conditions per place. [2024-01-30 14:24:00,985 INFO L140 encePairwiseOnDemand]: 56/67 looper letters, 42 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-01-30 14:24:00,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 218 flow [2024-01-30 14:24:00,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:24:00,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:24:00,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2024-01-30 14:24:00,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5708955223880597 [2024-01-30 14:24:00,986 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 111 flow. Second operand 4 states and 153 transitions. [2024-01-30 14:24:00,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 218 flow [2024-01-30 14:24:00,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 56 transitions, 215 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:24:00,988 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 94 flow [2024-01-30 14:24:00,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-01-30 14:24:00,990 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -24 predicate places. [2024-01-30 14:24:00,991 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 94 flow [2024-01-30 14:24:00,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2024-01-30 14:24:00,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:24:00,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:24:00,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-30 14:24:00,992 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-30 14:24:00,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:24:00,992 INFO L85 PathProgramCache]: Analyzing trace with hash 542159712, now seen corresponding path program 1 times [2024-01-30 14:24:00,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:24:00,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490116769] [2024-01-30 14:24:00,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:24:00,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:24:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-30 14:24:01,015 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-30 14:24:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-30 14:24:01,043 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-30 14:24:01,043 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-30 14:24:01,044 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 51 remaining) [2024-01-30 14:24:01,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 51 remaining) [2024-01-30 14:24:01,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 51 remaining) [2024-01-30 14:24:01,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 51 remaining) [2024-01-30 14:24:01,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 51 remaining) [2024-01-30 14:24:01,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 51 remaining) [2024-01-30 14:24:01,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 51 remaining) [2024-01-30 14:24:01,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 51 remaining) [2024-01-30 14:24:01,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 51 remaining) [2024-01-30 14:24:01,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 51 remaining) [2024-01-30 14:24:01,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 51 remaining) [2024-01-30 14:24:01,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 51 remaining) [2024-01-30 14:24:01,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 51 remaining) [2024-01-30 14:24:01,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 51 remaining) [2024-01-30 14:24:01,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err10ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 51 remaining) [2024-01-30 14:24:01,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 51 remaining) [2024-01-30 14:24:01,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 51 remaining) [2024-01-30 14:24:01,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 51 remaining) [2024-01-30 14:24:01,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 51 remaining) [2024-01-30 14:24:01,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 51 remaining) [2024-01-30 14:24:01,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 51 remaining) [2024-01-30 14:24:01,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 51 remaining) [2024-01-30 14:24:01,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err9ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 51 remaining) [2024-01-30 14:24:01,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 51 remaining) [2024-01-30 14:24:01,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 51 remaining) [2024-01-30 14:24:01,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 51 remaining) [2024-01-30 14:24:01,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 51 remaining) [2024-01-30 14:24:01,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (23 of 51 remaining) [2024-01-30 14:24:01,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 51 remaining) [2024-01-30 14:24:01,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 51 remaining) [2024-01-30 14:24:01,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 51 remaining) [2024-01-30 14:24:01,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 51 remaining) [2024-01-30 14:24:01,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 51 remaining) [2024-01-30 14:24:01,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 51 remaining) [2024-01-30 14:24:01,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 51 remaining) [2024-01-30 14:24:01,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 51 remaining) [2024-01-30 14:24:01,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 51 remaining) [2024-01-30 14:24:01,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 51 remaining) [2024-01-30 14:24:01,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 51 remaining) [2024-01-30 14:24:01,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 51 remaining) [2024-01-30 14:24:01,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 51 remaining) [2024-01-30 14:24:01,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 51 remaining) [2024-01-30 14:24:01,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err10ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 51 remaining) [2024-01-30 14:24:01,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 51 remaining) [2024-01-30 14:24:01,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 51 remaining) [2024-01-30 14:24:01,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 51 remaining) [2024-01-30 14:24:01,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 51 remaining) [2024-01-30 14:24:01,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 51 remaining) [2024-01-30 14:24:01,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 51 remaining) [2024-01-30 14:24:01,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 51 remaining) [2024-01-30 14:24:01,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err9ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 51 remaining) [2024-01-30 14:24:01,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-30 14:24:01,064 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:24:01,069 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-30 14:24:01,069 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-30 14:24:01,089 INFO L503 ceAbstractionStarter]: Automizer considered 26 witness invariants [2024-01-30 14:24:01,089 INFO L504 ceAbstractionStarter]: WitnessConsidered=26 [2024-01-30 14:24:01,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:24:01 BasicIcfg [2024-01-30 14:24:01,090 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-30 14:24:01,091 INFO L158 Benchmark]: Toolchain (without parser) took 2927.60ms. Allocated memory was 157.3MB in the beginning and 255.9MB in the end (delta: 98.6MB). Free memory was 84.4MB in the beginning and 220.0MB in the end (delta: -135.5MB). Peak memory consumption was 97.6MB. Max. memory is 16.1GB. [2024-01-30 14:24:01,091 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 157.3MB. Free memory is still 114.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:24:01,091 INFO L158 Benchmark]: CDTParser took 0.07ms. Allocated memory is still 157.3MB. Free memory is still 129.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:24:01,091 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.20ms. Allocated memory is still 157.3MB. Free memory was 84.3MB in the beginning and 118.9MB in the end (delta: -34.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-01-30 14:24:01,092 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.64ms. Allocated memory is still 157.3MB. Free memory was 118.5MB in the beginning and 116.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:24:01,092 INFO L158 Benchmark]: Boogie Preprocessor took 58.24ms. Allocated memory is still 157.3MB. Free memory was 116.9MB in the beginning and 114.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:24:01,093 INFO L158 Benchmark]: RCFGBuilder took 532.21ms. Allocated memory is still 157.3MB. Free memory was 114.7MB in the beginning and 81.2MB in the end (delta: 33.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-01-30 14:24:01,093 INFO L158 Benchmark]: TraceAbstraction took 1967.74ms. Allocated memory was 157.3MB in the beginning and 255.9MB in the end (delta: 98.6MB). Free memory was 80.2MB in the beginning and 220.0MB in the end (delta: -139.7MB). Peak memory consumption was 91.3MB. Max. memory is 16.1GB. [2024-01-30 14:24:01,094 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.14ms. Allocated memory is still 157.3MB. Free memory is still 114.5MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.07ms. Allocated memory is still 157.3MB. Free memory is still 129.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.20ms. Allocated memory is still 157.3MB. Free memory was 84.3MB in the beginning and 118.9MB in the end (delta: -34.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.64ms. Allocated memory is still 157.3MB. Free memory was 118.5MB in the beginning and 116.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.24ms. Allocated memory is still 157.3MB. Free memory was 116.9MB in the beginning and 114.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 532.21ms. Allocated memory is still 157.3MB. Free memory was 114.7MB in the beginning and 81.2MB in the end (delta: 33.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1967.74ms. Allocated memory was 157.3MB in the beginning and 255.9MB in the end (delta: 98.6MB). Free memory was 80.2MB in the beginning and 220.0MB in the end (delta: -139.7MB). Peak memory consumption was 91.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 43]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L37] 0 unsigned int pos, i1, i2, N; [L70] 0 pthread_t t1, t2; VAL [N=0, i1=0, i2=0, pos=0, t1={3:0}, t2={5:0}] [L73] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[pos],IntegerLiteral[0U]],BinaryExpression[COMPEQ,IdentifierExpression[i1],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[i2],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[N],IntegerLiteral[0U]]]]] [L73] 0 pos = __VERIFIER_nondet_uint() [L74] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[i1],IntegerLiteral[0U]],BinaryExpression[COMPEQ,IdentifierExpression[i2],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[N],IntegerLiteral[0U]]]]] [L74] 0 i1 = __VERIFIER_nondet_uint() [L75] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[i2],IntegerLiteral[0U]],BinaryExpression[COMPEQ,IdentifierExpression[N],IntegerLiteral[0U]]]]] [L75] 0 i2 = __VERIFIER_nondet_uint() [L76] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[N],IntegerLiteral[0U]]]] [L76] 0 N = __VERIFIER_nondet_uint() [L79] CALL 0 assume_abort_if_not( pos == i1 && pos == i2 && pos == 0 ) [L34] COND FALSE 0 !(!cond) [L79] RET 0 assume_abort_if_not( pos == i1 && pos == i2 && pos == 0 ) [L81] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [_argptr={0:0}, i1=0, i2=0, pos=0, t1={3:0}, t2={5:0}] [L40] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[_argptr]],IntegerLiteral[0UL]]]] VAL [_argptr={0:0}, _argptr={0:0}, i1=0, i2=0, pos=0] [L40] COND TRUE 1 ( i1 < ( 2 * N ) ) VAL [N=1, _argptr={0:0}, _argptr={0:0}, i1=0, i2=0, pos=0] [L41] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[_argptr]],IntegerLiteral[0UL]]]] VAL [N=1, _argptr={0:0}, _argptr={0:0}, i1=0, i2=0, pos=0] [L42] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[_argptr]],IntegerLiteral[0UL]]]] [L42] 1 pos++ [L43] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[N],IntegerLiteral[0U]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[_argptr]],IntegerLiteral[0UL]]]]] VAL [N=1, _argptr={0:0}, _argptr={0:0}, i1=0, i2=0, pos=1] - UnprovableResult [Line: 40]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 41]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 51]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 42]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 44]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 46]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 47]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 48]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 40]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 55]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 56]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 58]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 59]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 61]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 63]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 55]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 73]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 74]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 75]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 76]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 87]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 81]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 82]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 114 locations, 51 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: 1.8s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 215 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 167 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 437 IncrementalHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 5 mSDtfsCounter, 437 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred in iteration=0, InterpolantAutomatonStates: 20, 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, 0.5s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 136 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-01-30 14:24:01,120 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE