./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i --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/szymanski.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/szymanski.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-?-80b1b13-m [2024-01-31 16:41:24,396 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:41:24,493 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:41:24,496 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:41:24,497 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:41:24,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:41:24,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:41:24,534 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:41:24,535 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:41:24,539 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:41:24,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:41:24,539 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:41:24,540 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:41:24,541 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:41:24,542 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:41:24,542 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:41:24,542 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:41:24,542 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:41:24,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:41:24,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:41:24,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:41:24,543 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:41:24,544 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:41:24,544 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:41:24,544 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:41:24,544 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:41:24,545 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:41:24,545 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:41:24,546 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:41:24,546 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:41:24,547 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:41:24,547 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:41:24,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:41:24,547 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:41:24,548 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:41:24,548 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:41:24,548 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:41:24,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:41:24,548 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:41:24,549 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:41:24,549 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:41:24,549 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:41:24,550 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:41:24,550 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:41:24,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:41:24,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:41:24,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:41:24,831 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:41:24,831 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:41:24,833 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2024-01-31 16:41:26,010 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:41:26,240 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:41:26,241 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2024-01-31 16:41:26,253 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8326b143c/46330e38ce9143b3a71ddd33e1f755b5/FLAG0f99eb726 [2024-01-31 16:41:26,270 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8326b143c/46330e38ce9143b3a71ddd33e1f755b5 [2024-01-31 16:41:26,272 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:41:26,272 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:41:26,273 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/szymanski.yml/witness.yml [2024-01-31 16:41:26,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:41:26,564 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:41:26,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:41:26,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:41:26,570 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:41:26,571 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:41:26" (1/2) ... [2024-01-31 16:41:26,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@633a7fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:26, skipping insertion in model container [2024-01-31 16:41:26,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:41:26" (1/2) ... [2024-01-31 16:41:26,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7244ed8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:26, skipping insertion in model container [2024-01-31 16:41:26,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:41:26" (2/2) ... [2024-01-31 16:41:26,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@633a7fad and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:26, skipping insertion in model container [2024-01-31 16:41:26,575 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:41:26" (2/2) ... [2024-01-31 16:41:26,575 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:41:27,362 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:41:27,368 INFO L98 nessWitnessExtractor]: Location invariant after [L764-L764] ((((((((0 <= flag1) && (0 <= flag2)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:41:27,368 INFO L98 nessWitnessExtractor]: Location invariant after [L707-L707] ((((((((0 <= flag1) && (0 <= flag2)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:41:27,408 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:41:27,679 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2024-01-31 16:41:27,686 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2024-01-31 16:41:27,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:41:27,705 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:41:27,745 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:41:27,747 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2024-01-31 16:41:27,748 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:41:27,756 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2024-01-31 16:41:27,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:41:27,785 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:41:27,786 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:27 WrapperNode [2024-01-31 16:41:27,786 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:41:27,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:41:27,787 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:41:27,787 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:41:27,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:27" (1/1) ... [2024-01-31 16:41:27,807 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:27" (1/1) ... [2024-01-31 16:41:27,839 INFO L138 Inliner]: procedures = 170, calls = 74, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2024-01-31 16:41:27,840 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:41:27,841 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:41:27,841 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:41:27,841 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:41:27,851 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:27" (1/1) ... [2024-01-31 16:41:27,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:27" (1/1) ... [2024-01-31 16:41:27,867 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:27" (1/1) ... [2024-01-31 16:41:27,888 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]. [2024-01-31 16:41:27,896 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:27" (1/1) ... [2024-01-31 16:41:27,897 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:27" (1/1) ... [2024-01-31 16:41:27,903 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:27" (1/1) ... [2024-01-31 16:41:27,916 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:27" (1/1) ... [2024-01-31 16:41:27,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:27" (1/1) ... [2024-01-31 16:41:27,927 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:27" (1/1) ... [2024-01-31 16:41:27,930 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:41:27,939 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:41:27,940 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:41:27,940 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:41:27,941 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:27" (1/1) ... [2024-01-31 16:41:27,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:41:27,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:41:27,978 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) [2024-01-31 16:41:27,993 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 [2024-01-31 16:41:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:41:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:41:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:41:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-01-31 16:41:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-01-31 16:41:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-31 16:41:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-31 16:41:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:41:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:41:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:41:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:41:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:41:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:41:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:41:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:41:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:41:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:41:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:41:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:41:28,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:41:28,030 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:41:28,157 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:41:28,159 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:41:28,339 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:41:28,339 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:41:28,413 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:41:28,414 INFO L320 CfgBuilder]: Removed 8 assume(true) statements. [2024-01-31 16:41:28,414 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:41:28 BoogieIcfgContainer [2024-01-31 16:41:28,414 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:41:28,422 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:41:28,422 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:41:28,425 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:41:28,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:41:26" (1/4) ... [2024-01-31 16:41:28,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbd86e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:41:28, skipping insertion in model container [2024-01-31 16:41:28,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:41:26" (2/4) ... [2024-01-31 16:41:28,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbd86e2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:41:28, skipping insertion in model container [2024-01-31 16:41:28,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:27" (3/4) ... [2024-01-31 16:41:28,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbd86e2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:41:28, skipping insertion in model container [2024-01-31 16:41:28,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:41:28" (4/4) ... [2024-01-31 16:41:28,431 INFO L112 eAbstractionObserver]: Analyzing ICFG szymanski.i [2024-01-31 16:41:28,448 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:41:28,449 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-31 16:41:28,449 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:41:28,530 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-31 16:41:28,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 71 transitions, 156 flow [2024-01-31 16:41:28,593 INFO L124 PetriNetUnfolderBase]: 12/69 cut-off events. [2024-01-31 16:41:28,593 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:41:28,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 69 events. 12/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 128 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2024-01-31 16:41:28,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 71 transitions, 156 flow [2024-01-31 16:41:28,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 67 transitions, 143 flow [2024-01-31 16:41:28,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:41:28,623 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;@a3298b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:41:28,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-01-31 16:41:28,654 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:41:28,655 INFO L124 PetriNetUnfolderBase]: 7/43 cut-off events. [2024-01-31 16:41:28,655 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:41:28,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:28,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:41:28,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-31 16:41:28,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:28,663 INFO L85 PathProgramCache]: Analyzing trace with hash -481980936, now seen corresponding path program 1 times [2024-01-31 16:41:28,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:28,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71378960] [2024-01-31 16:41:28,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:28,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:41:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:41:28,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:41:28,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71378960] [2024-01-31 16:41:28,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71378960] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:41:28,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:41:28,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:41:28,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26588381] [2024-01-31 16:41:28,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:41:28,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:41:28,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:41:28,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:41:28,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:41:28,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 71 [2024-01-31 16:41:29,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2024-01-31 16:41:29,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:41:29,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 71 [2024-01-31 16:41:29,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:41:29,180 INFO L124 PetriNetUnfolderBase]: 217/578 cut-off events. [2024-01-31 16:41:29,182 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-01-31 16:41:29,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 921 conditions, 578 events. 217/578 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3278 event pairs, 57 based on Foata normal form. 55/581 useless extension candidates. Maximal degree in co-relation 808. Up to 168 conditions per place. [2024-01-31 16:41:29,191 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 25 selfloop transitions, 3 changer transitions 1/75 dead transitions. [2024-01-31 16:41:29,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 75 transitions, 220 flow [2024-01-31 16:41:29,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:41:29,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:41:29,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2024-01-31 16:41:29,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8356807511737089 [2024-01-31 16:41:29,207 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 143 flow. Second operand 3 states and 178 transitions. [2024-01-31 16:41:29,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 75 transitions, 220 flow [2024-01-31 16:41:29,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 213 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:41:29,216 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 154 flow [2024-01-31 16:41:29,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2024-01-31 16:41:29,220 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 1 predicate places. [2024-01-31 16:41:29,221 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 154 flow [2024-01-31 16:41:29,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2024-01-31 16:41:29,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:29,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:41:29,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:41:29,222 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-31 16:41:29,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:29,222 INFO L85 PathProgramCache]: Analyzing trace with hash -154974577, now seen corresponding path program 1 times [2024-01-31 16:41:29,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:29,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004257583] [2024-01-31 16:41:29,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:29,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:41:29,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:41:29,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:41:29,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004257583] [2024-01-31 16:41:29,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004257583] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:41:29,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:41:29,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:41:29,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040031104] [2024-01-31 16:41:29,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:41:29,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:41:29,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:41:29,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:41:29,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:41:29,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 71 [2024-01-31 16:41:29,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:41:29,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:41:29,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 71 [2024-01-31 16:41:29,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:41:29,436 INFO L124 PetriNetUnfolderBase]: 235/607 cut-off events. [2024-01-31 16:41:29,436 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-01-31 16:41:29,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 607 events. 235/607 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3409 event pairs, 81 based on Foata normal form. 22/591 useless extension candidates. Maximal degree in co-relation 406. Up to 227 conditions per place. [2024-01-31 16:41:29,444 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 23 selfloop transitions, 2 changer transitions 4/75 dead transitions. [2024-01-31 16:41:29,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 231 flow [2024-01-31 16:41:29,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:41:29,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:41:29,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-01-31 16:41:29,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8215962441314554 [2024-01-31 16:41:29,453 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 154 flow. Second operand 3 states and 175 transitions. [2024-01-31 16:41:29,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 231 flow [2024-01-31 16:41:29,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 75 transitions, 225 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:41:29,459 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 158 flow [2024-01-31 16:41:29,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2024-01-31 16:41:29,463 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2024-01-31 16:41:29,464 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 158 flow [2024-01-31 16:41:29,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:41:29,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:29,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:41:29,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:41:29,465 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-31 16:41:29,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:29,468 INFO L85 PathProgramCache]: Analyzing trace with hash 395763993, now seen corresponding path program 1 times [2024-01-31 16:41:29,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:29,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820915770] [2024-01-31 16:41:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:29,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:41:29,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:41:29,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:41:29,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820915770] [2024-01-31 16:41:29,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820915770] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:41:29,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:41:29,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:41:29,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490998225] [2024-01-31 16:41:29,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:41:29,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:41:29,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:41:29,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:41:29,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:41:29,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 71 [2024-01-31 16:41:29,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-01-31 16:41:29,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:41:29,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 71 [2024-01-31 16:41:29,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:41:29,866 INFO L124 PetriNetUnfolderBase]: 822/1693 cut-off events. [2024-01-31 16:41:29,867 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2024-01-31 16:41:29,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3180 conditions, 1693 events. 822/1693 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9869 event pairs, 333 based on Foata normal form. 36/1648 useless extension candidates. Maximal degree in co-relation 2673. Up to 729 conditions per place. [2024-01-31 16:41:29,875 INFO L140 encePairwiseOnDemand]: 54/71 looper letters, 45 selfloop transitions, 7 changer transitions 30/113 dead transitions. [2024-01-31 16:41:29,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 113 transitions, 431 flow [2024-01-31 16:41:29,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:41:29,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:41:29,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 255 transitions. [2024-01-31 16:41:29,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7183098591549296 [2024-01-31 16:41:29,879 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 158 flow. Second operand 5 states and 255 transitions. [2024-01-31 16:41:29,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 113 transitions, 431 flow [2024-01-31 16:41:29,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 113 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:41:29,885 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 232 flow [2024-01-31 16:41:29,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-01-31 16:41:29,886 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2024-01-31 16:41:29,887 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 232 flow [2024-01-31 16:41:29,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-01-31 16:41:29,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:29,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:41:29,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:41:29,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-31 16:41:29,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:29,889 INFO L85 PathProgramCache]: Analyzing trace with hash -868945097, now seen corresponding path program 2 times [2024-01-31 16:41:29,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:29,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716134676] [2024-01-31 16:41:29,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:29,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:41:29,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:41:29,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:41:29,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716134676] [2024-01-31 16:41:29,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716134676] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:41:29,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:41:29,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:41:29,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101154709] [2024-01-31 16:41:29,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:41:29,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:41:29,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:41:29,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:41:29,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:41:29,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 71 [2024-01-31 16:41:29,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-01-31 16:41:29,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:41:29,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 71 [2024-01-31 16:41:29,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:41:30,263 INFO L124 PetriNetUnfolderBase]: 1139/2314 cut-off events. [2024-01-31 16:41:30,263 INFO L125 PetriNetUnfolderBase]: For 1049/1083 co-relation queries the response was YES. [2024-01-31 16:41:30,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5166 conditions, 2314 events. 1139/2314 cut-off events. For 1049/1083 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 14241 event pairs, 537 based on Foata normal form. 30/2195 useless extension candidates. Maximal degree in co-relation 4402. Up to 1189 conditions per place. [2024-01-31 16:41:30,274 INFO L140 encePairwiseOnDemand]: 54/71 looper letters, 54 selfloop transitions, 13 changer transitions 26/126 dead transitions. [2024-01-31 16:41:30,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 126 transitions, 556 flow [2024-01-31 16:41:30,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:41:30,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:41:30,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 257 transitions. [2024-01-31 16:41:30,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.723943661971831 [2024-01-31 16:41:30,276 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 232 flow. Second operand 5 states and 257 transitions. [2024-01-31 16:41:30,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 126 transitions, 556 flow [2024-01-31 16:41:30,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 126 transitions, 530 flow, removed 13 selfloop flow, removed 0 redundant places. [2024-01-31 16:41:30,288 INFO L231 Difference]: Finished difference. Result has 78 places, 81 transitions, 334 flow [2024-01-31 16:41:30,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=78, PETRI_TRANSITIONS=81} [2024-01-31 16:41:30,290 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 16 predicate places. [2024-01-31 16:41:30,290 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 81 transitions, 334 flow [2024-01-31 16:41:30,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-01-31 16:41:30,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:30,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:41:30,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:41:30,291 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-31 16:41:30,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:30,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1924963385, now seen corresponding path program 3 times [2024-01-31 16:41:30,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:30,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305344873] [2024-01-31 16:41:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:30,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:41:30,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:41:30,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:41:30,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305344873] [2024-01-31 16:41:30,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305344873] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:41:30,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:41:30,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:41:30,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302714017] [2024-01-31 16:41:30,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:41:30,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:41:30,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:41:30,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:41:30,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:41:30,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 71 [2024-01-31 16:41:30,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 334 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-01-31 16:41:30,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:41:30,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 71 [2024-01-31 16:41:30,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:41:30,714 INFO L124 PetriNetUnfolderBase]: 1221/2625 cut-off events. [2024-01-31 16:41:30,717 INFO L125 PetriNetUnfolderBase]: For 1444/1457 co-relation queries the response was YES. [2024-01-31 16:41:30,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6471 conditions, 2625 events. 1221/2625 cut-off events. For 1444/1457 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 17632 event pairs, 495 based on Foata normal form. 62/2582 useless extension candidates. Maximal degree in co-relation 3747. Up to 1182 conditions per place. [2024-01-31 16:41:30,733 INFO L140 encePairwiseOnDemand]: 54/71 looper letters, 74 selfloop transitions, 20 changer transitions 2/136 dead transitions. [2024-01-31 16:41:30,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 136 transitions, 717 flow [2024-01-31 16:41:30,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:41:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:41:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 253 transitions. [2024-01-31 16:41:30,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7126760563380282 [2024-01-31 16:41:30,737 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 334 flow. Second operand 5 states and 253 transitions. [2024-01-31 16:41:30,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 136 transitions, 717 flow [2024-01-31 16:41:30,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 136 transitions, 707 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-01-31 16:41:30,749 INFO L231 Difference]: Finished difference. Result has 86 places, 99 transitions, 525 flow [2024-01-31 16:41:30,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=525, PETRI_PLACES=86, PETRI_TRANSITIONS=99} [2024-01-31 16:41:30,752 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 24 predicate places. [2024-01-31 16:41:30,752 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 99 transitions, 525 flow [2024-01-31 16:41:30,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-01-31 16:41:30,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:30,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:41:30,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:41:30,753 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-31 16:41:30,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:30,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2005077507, now seen corresponding path program 4 times [2024-01-31 16:41:30,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:30,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431515045] [2024-01-31 16:41:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:30,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:41:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:41:30,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:41:30,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431515045] [2024-01-31 16:41:30,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431515045] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:41:30,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:41:30,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:41:30,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179972801] [2024-01-31 16:41:30,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:41:30,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:41:30,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:41:30,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:41:30,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:41:30,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 71 [2024-01-31 16:41:30,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 99 transitions, 525 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-01-31 16:41:30,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:41:30,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 71 [2024-01-31 16:41:30,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:41:31,210 INFO L124 PetriNetUnfolderBase]: 1301/2906 cut-off events. [2024-01-31 16:41:31,211 INFO L125 PetriNetUnfolderBase]: For 3853/3951 co-relation queries the response was YES. [2024-01-31 16:41:31,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8170 conditions, 2906 events. 1301/2906 cut-off events. For 3853/3951 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 20405 event pairs, 401 based on Foata normal form. 84/2950 useless extension candidates. Maximal degree in co-relation 5572. Up to 1017 conditions per place. [2024-01-31 16:41:31,231 INFO L140 encePairwiseOnDemand]: 53/71 looper letters, 74 selfloop transitions, 35 changer transitions 6/158 dead transitions. [2024-01-31 16:41:31,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 158 transitions, 1070 flow [2024-01-31 16:41:31,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:41:31,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:41:31,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 260 transitions. [2024-01-31 16:41:31,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7323943661971831 [2024-01-31 16:41:31,233 INFO L175 Difference]: Start difference. First operand has 86 places, 99 transitions, 525 flow. Second operand 5 states and 260 transitions. [2024-01-31 16:41:31,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 158 transitions, 1070 flow [2024-01-31 16:41:31,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 158 transitions, 1054 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-01-31 16:41:31,251 INFO L231 Difference]: Finished difference. Result has 94 places, 126 transitions, 894 flow [2024-01-31 16:41:31,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=894, PETRI_PLACES=94, PETRI_TRANSITIONS=126} [2024-01-31 16:41:31,254 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 32 predicate places. [2024-01-31 16:41:31,254 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 126 transitions, 894 flow [2024-01-31 16:41:31,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-01-31 16:41:31,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:31,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:41:31,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:41:31,255 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-31 16:41:31,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:31,256 INFO L85 PathProgramCache]: Analyzing trace with hash 814619717, now seen corresponding path program 5 times [2024-01-31 16:41:31,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:31,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076388699] [2024-01-31 16:41:31,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:31,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:41:31,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:41:31,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:41:31,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076388699] [2024-01-31 16:41:31,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076388699] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:41:31,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:41:31,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:41:31,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429265092] [2024-01-31 16:41:31,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:41:31,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:41:31,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:41:31,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:41:31,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:41:31,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 71 [2024-01-31 16:41:31,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 126 transitions, 894 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-01-31 16:41:31,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:41:31,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 71 [2024-01-31 16:41:31,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:41:31,749 INFO L124 PetriNetUnfolderBase]: 1459/3070 cut-off events. [2024-01-31 16:41:31,749 INFO L125 PetriNetUnfolderBase]: For 6403/6514 co-relation queries the response was YES. [2024-01-31 16:41:31,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9749 conditions, 3070 events. 1459/3070 cut-off events. For 6403/6514 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 20670 event pairs, 547 based on Foata normal form. 154/3118 useless extension candidates. Maximal degree in co-relation 6469. Up to 1421 conditions per place. [2024-01-31 16:41:31,764 INFO L140 encePairwiseOnDemand]: 54/71 looper letters, 0 selfloop transitions, 0 changer transitions 170/170 dead transitions. [2024-01-31 16:41:31,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 170 transitions, 1253 flow [2024-01-31 16:41:31,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:41:31,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:41:31,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 257 transitions. [2024-01-31 16:41:31,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.723943661971831 [2024-01-31 16:41:31,766 INFO L175 Difference]: Start difference. First operand has 94 places, 126 transitions, 894 flow. Second operand 5 states and 257 transitions. [2024-01-31 16:41:31,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 170 transitions, 1253 flow [2024-01-31 16:41:31,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 170 transitions, 1236 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-01-31 16:41:31,788 INFO L231 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2024-01-31 16:41:31,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2024-01-31 16:41:31,789 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 31 predicate places. [2024-01-31 16:41:31,789 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2024-01-31 16:41:31,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-01-31 16:41:31,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2024-01-31 16:41:31,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-01-31 16:41:31,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2024-01-31 16:41:31,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-01-31 16:41:31,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-01-31 16:41:31,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-01-31 16:41:31,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:41:31,793 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2024-01-31 16:41:31,798 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:41:31,798 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:41:31,803 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:41:31 BasicIcfg [2024-01-31 16:41:31,803 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:41:31,810 INFO L158 Benchmark]: Toolchain (without parser) took 5239.62ms. Allocated memory was 148.9MB in the beginning and 297.8MB in the end (delta: 148.9MB). Free memory was 58.9MB in the beginning and 222.8MB in the end (delta: -163.9MB). Peak memory consumption was 129.7MB. Max. memory is 16.1GB. [2024-01-31 16:41:31,811 INFO L158 Benchmark]: CDTParser took 0.92ms. Allocated memory is still 148.9MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:41:31,811 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 148.9MB. Free memory is still 94.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:41:31,811 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1220.52ms. Allocated memory was 148.9MB in the beginning and 232.8MB in the end (delta: 83.9MB). Free memory was 58.4MB in the beginning and 166.6MB in the end (delta: -108.2MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2024-01-31 16:41:31,812 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.48ms. Allocated memory is still 232.8MB. Free memory was 166.6MB in the beginning and 164.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:41:31,812 INFO L158 Benchmark]: Boogie Preprocessor took 97.25ms. Allocated memory is still 232.8MB. Free memory was 164.5MB in the beginning and 162.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:41:31,812 INFO L158 Benchmark]: RCFGBuilder took 475.60ms. Allocated memory is still 232.8MB. Free memory was 162.4MB in the beginning and 140.4MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-01-31 16:41:31,812 INFO L158 Benchmark]: TraceAbstraction took 3381.34ms. Allocated memory was 232.8MB in the beginning and 297.8MB in the end (delta: 65.0MB). Free memory was 140.4MB in the beginning and 222.8MB in the end (delta: -82.4MB). Peak memory consumption was 123.1MB. Max. memory is 16.1GB. [2024-01-31 16:41:31,814 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92ms. Allocated memory is still 148.9MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 148.9MB. Free memory is still 94.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1220.52ms. Allocated memory was 148.9MB in the beginning and 232.8MB in the end (delta: 83.9MB). Free memory was 58.4MB in the beginning and 166.6MB in the end (delta: -108.2MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.48ms. Allocated memory is still 232.8MB. Free memory was 166.6MB in the beginning and 164.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 97.25ms. Allocated memory is still 232.8MB. Free memory was 164.5MB in the beginning and 162.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 475.60ms. Allocated memory is still 232.8MB. Free memory was 162.4MB in the beginning and 140.4MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3381.34ms. Allocated memory was 232.8MB in the beginning and 297.8MB in the end (delta: 65.0MB). Free memory was 140.4MB in the beginning and 222.8MB in the end (delta: -82.4MB). Peak memory consumption was 123.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 802]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 745]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 345 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 274 mSDsluCounter, 122 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 89 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 804 IncrementalHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 89 mSolverCounterUnsat, 73 mSDtfsCounter, 804 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=894occurred in iteration=6, InterpolantAutomatonStates: 31, 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, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 223 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-31 16:41:31,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE