./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-match-subst.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/chl-match-subst.wvr.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/weaver/chl-match-subst.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-match-subst.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-?-80b1b13-m [2024-01-31 16:48:20,903 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:48:21,044 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:48:21,047 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:48:21,048 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:48:21,074 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:48:21,074 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:48:21,074 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:48:21,075 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:48:21,075 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:48:21,076 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:48:21,076 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:48:21,076 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:48:21,077 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:48:21,077 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:48:21,077 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:48:21,077 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:48:21,078 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:48:21,078 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:48:21,078 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:48:21,078 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:48:21,079 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:48:21,079 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:48:21,079 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:48:21,080 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:48:21,080 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:48:21,080 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:48:21,080 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:48:21,081 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:48:21,081 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:48:21,082 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:48:21,082 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:48:21,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:48:21,082 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:48:21,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:48:21,083 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:48:21,083 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:48:21,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:48:21,083 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:48:21,084 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:48:21,084 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:48:21,084 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:48:21,084 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:48:21,084 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:48:21,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:48:21,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:48:21,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:48:21,311 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:48:21,311 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:48:21,312 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-subst.wvr.c [2024-01-31 16:48:22,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:48:22,637 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:48:22,638 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-subst.wvr.c [2024-01-31 16:48:22,649 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeb26009e/80b98242c3994e3a9ea96ca9d0e2310e/FLAG02a3a51f1 [2024-01-31 16:48:22,663 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeb26009e/80b98242c3994e3a9ea96ca9d0e2310e [2024-01-31 16:48:22,665 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:48:22,666 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:48:22,666 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-match-subst.wvr.yml/witness.yml [2024-01-31 16:48:22,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:48:22,794 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:48:22,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:48:22,795 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:48:22,799 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:48:22,810 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:48:22" (1/2) ... [2024-01-31 16:48:22,812 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48050ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:48:22, skipping insertion in model container [2024-01-31 16:48:22,812 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:48:22" (1/2) ... [2024-01-31 16:48:22,814 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1593010d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:48:22, skipping insertion in model container [2024-01-31 16:48:22,814 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:48:22" (2/2) ... [2024-01-31 16:48:22,814 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48050ce8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:48:22, skipping insertion in model container [2024-01-31 16:48:22,814 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:48:22" (2/2) ... [2024-01-31 16:48:22,815 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:48:22,861 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:48:22,862 INFO L98 nessWitnessExtractor]: Location invariant after [L43-L43] (((((4294967296LL + (long long )s1) + (long long )s2 >= 0LL) && ((4294967295LL - (long long )s1) + (long long )s2 >= 0LL)) && ((4294967295LL + (long long )s1) - (long long )s2 >= 0LL)) && ((4294967294LL - (long long )s1) - (long long )s2 >= 0LL)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:48:22,863 INFO L98 nessWitnessExtractor]: Location invariant after [L52-L52] (unsigned long )_argptr == 0UL [2024-01-31 16:48:22,863 INFO L98 nessWitnessExtractor]: Location invariant after [L44-L44] (unsigned long )_argptr == 0UL [2024-01-31 16:48:22,863 INFO L98 nessWitnessExtractor]: Location invariant after [L59-L59] (((((4294967296LL + (long long )s1) + (long long )s2 >= 0LL) && ((4294967295LL - (long long )s1) + (long long )s2 >= 0LL)) && ((4294967295LL + (long long )s1) - (long long )s2 >= 0LL)) && ((4294967294LL - (long long )s1) - (long long )s2 >= 0LL)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:48:22,863 INFO L98 nessWitnessExtractor]: Location invariant after [L51-L51] (((((4294967296LL + (long long )s1) + (long long )s2 >= 0LL) && ((4294967295LL - (long long )s1) + (long long )s2 >= 0LL)) && ((4294967295LL + (long long )s1) - (long long )s2 >= 0LL)) && ((4294967294LL - (long long )s1) - (long long )s2 >= 0LL)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:48:22,863 INFO L98 nessWitnessExtractor]: Location invariant after [L60-L60] (unsigned long )_argptr == 0UL [2024-01-31 16:48:22,880 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:48:23,027 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/chl-match-subst.wvr.c[3056,3069] [2024-01-31 16:48:23,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:48:23,040 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:48:23,060 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:48:23,061 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:48:23,062 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:48:23,062 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:48:23,064 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:48:23,064 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:48:23,069 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/chl-match-subst.wvr.c[3056,3069] [2024-01-31 16:48:23,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:48:23,082 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:48:23,083 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:48:23 WrapperNode [2024-01-31 16:48:23,083 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:48:23,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:48:23,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:48:23,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:48:23,095 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 04:48:23" (1/1) ... [2024-01-31 16:48:23,101 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 04:48:23" (1/1) ... [2024-01-31 16:48:23,125 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 217 [2024-01-31 16:48:23,130 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:48:23,132 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:48:23,132 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:48:23,132 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:48:23,140 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 04:48:23" (1/1) ... [2024-01-31 16:48:23,140 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 04:48:23" (1/1) ... [2024-01-31 16:48:23,159 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 04:48:23" (1/1) ... [2024-01-31 16:48:23,172 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-31 16:48:23,173 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 04:48:23" (1/1) ... [2024-01-31 16:48:23,173 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 04:48:23" (1/1) ... [2024-01-31 16:48:23,178 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 04:48:23" (1/1) ... [2024-01-31 16:48:23,179 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 04:48:23" (1/1) ... [2024-01-31 16:48:23,181 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 04:48:23" (1/1) ... [2024-01-31 16:48:23,182 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 04:48:23" (1/1) ... [2024-01-31 16:48:23,184 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:48:23,185 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:48:23,185 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:48:23,185 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:48:23,186 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 04:48:23" (1/1) ... [2024-01-31 16:48:23,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:48:23,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:48:23,246 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 16:48:23,263 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 16:48:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:48:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:48:23,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:48:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:48:23,282 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:48:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:48:23,283 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:48:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:48:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:48:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:48:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:48:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:48:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:48:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:48:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:48:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:48:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:48:23,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:48:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:48:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:48:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:48:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:48:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:48:23,288 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 16:48:23,374 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:48:23,376 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:48:23,658 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:48:23,660 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:48:24,087 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:48:24,088 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:48:24,089 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:48:24 BoogieIcfgContainer [2024-01-31 16:48:24,089 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:48:24,093 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:48:24,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:48:24,097 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:48:24,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:48:22" (1/4) ... [2024-01-31 16:48:24,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbd5a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:48:24, skipping insertion in model container [2024-01-31 16:48:24,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:48:22" (2/4) ... [2024-01-31 16:48:24,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbd5a3b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:48:24, skipping insertion in model container [2024-01-31 16:48:24,098 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 04:48:23" (3/4) ... [2024-01-31 16:48:24,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbd5a3b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:48:24, skipping insertion in model container [2024-01-31 16:48:24,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:48:24" (4/4) ... [2024-01-31 16:48:24,113 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2024-01-31 16:48:24,128 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:48:24,129 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:48:24,129 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:48:24,206 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 16:48:24,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 21 transitions, 63 flow [2024-01-31 16:48:24,261 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-01-31 16:48:24,261 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:48:24,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 18 events. 0/18 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-31 16:48:24,263 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 21 transitions, 63 flow [2024-01-31 16:48:24,266 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 17 transitions, 52 flow [2024-01-31 16:48:24,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:48:24,283 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;@10eb8eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:48:24,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-31 16:48:24,293 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:48:24,294 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2024-01-31 16:48:24,294 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:48:24,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:24,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:24,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:24,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:24,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1701418903, now seen corresponding path program 1 times [2024-01-31 16:48:24,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:24,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415920237] [2024-01-31 16:48:24,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:24,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:25,748 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 16:48:25,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:25,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415920237] [2024-01-31 16:48:25,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415920237] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:25,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:25,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:48:25,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289142351] [2024-01-31 16:48:25,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:25,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:48:25,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:25,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:48:25,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:48:25,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-31 16:48:25,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 52 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 16:48:25,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:25,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-31 16:48:25,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:26,073 INFO L124 PetriNetUnfolderBase]: 38/102 cut-off events. [2024-01-31 16:48:26,073 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-01-31 16:48:26,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 102 events. 38/102 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 283 event pairs, 2 based on Foata normal form. 1/103 useless extension candidates. Maximal degree in co-relation 169. Up to 38 conditions per place. [2024-01-31 16:48:26,077 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 32 selfloop transitions, 6 changer transitions 7/46 dead transitions. [2024-01-31 16:48:26,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 230 flow [2024-01-31 16:48:26,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:48:26,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:48:26,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-01-31 16:48:26,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-01-31 16:48:26,090 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 52 flow. Second operand 6 states and 70 transitions. [2024-01-31 16:48:26,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 230 flow [2024-01-31 16:48:26,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 46 transitions, 198 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:48:26,096 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 73 flow [2024-01-31 16:48:26,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=73, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2024-01-31 16:48:26,100 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2024-01-31 16:48:26,101 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 73 flow [2024-01-31 16:48:26,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 16:48:26,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:26,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:26,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:48:26,102 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:26,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:26,103 INFO L85 PathProgramCache]: Analyzing trace with hash 953275551, now seen corresponding path program 2 times [2024-01-31 16:48:26,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:26,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880106879] [2024-01-31 16:48:26,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:26,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:26,837 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 16:48:26,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:26,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880106879] [2024-01-31 16:48:26,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880106879] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:26,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:26,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:48:26,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826618887] [2024-01-31 16:48:26,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:26,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:48:26,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:26,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:48:26,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:48:26,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-31 16:48:26,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 16:48:26,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:26,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-31 16:48:26,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:27,107 INFO L124 PetriNetUnfolderBase]: 38/119 cut-off events. [2024-01-31 16:48:27,108 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-01-31 16:48:27,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 119 events. 38/119 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 410 event pairs, 6 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 309. Up to 58 conditions per place. [2024-01-31 16:48:27,113 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 30 selfloop transitions, 7 changer transitions 9/47 dead transitions. [2024-01-31 16:48:27,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 47 transitions, 237 flow [2024-01-31 16:48:27,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:48:27,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:48:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-01-31 16:48:27,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-01-31 16:48:27,122 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 73 flow. Second operand 6 states and 70 transitions. [2024-01-31 16:48:27,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 47 transitions, 237 flow [2024-01-31 16:48:27,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 47 transitions, 233 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-31 16:48:27,129 INFO L231 Difference]: Finished difference. Result has 35 places, 22 transitions, 102 flow [2024-01-31 16:48:27,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2024-01-31 16:48:27,131 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2024-01-31 16:48:27,131 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 102 flow [2024-01-31 16:48:27,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 16:48:27,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:27,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:27,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:48:27,133 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:27,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:27,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1095515803, now seen corresponding path program 3 times [2024-01-31 16:48:27,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:27,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131108089] [2024-01-31 16:48:27,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:27,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:27,864 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 16:48:27,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:27,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131108089] [2024-01-31 16:48:27,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131108089] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:27,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:27,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:48:27,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730660401] [2024-01-31 16:48:27,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:27,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:48:27,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:27,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:48:27,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:48:27,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-31 16:48:27,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 16:48:27,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:27,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-31 16:48:27,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:28,058 INFO L124 PetriNetUnfolderBase]: 33/105 cut-off events. [2024-01-31 16:48:28,059 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2024-01-31 16:48:28,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 105 events. 33/105 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 334 event pairs, 2 based on Foata normal form. 1/106 useless extension candidates. Maximal degree in co-relation 334. Up to 51 conditions per place. [2024-01-31 16:48:28,062 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 27 selfloop transitions, 6 changer transitions 11/45 dead transitions. [2024-01-31 16:48:28,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 259 flow [2024-01-31 16:48:28,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:48:28,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:48:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-01-31 16:48:28,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-01-31 16:48:28,065 INFO L175 Difference]: Start difference. First operand has 35 places, 22 transitions, 102 flow. Second operand 6 states and 68 transitions. [2024-01-31 16:48:28,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 259 flow [2024-01-31 16:48:28,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 245 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-01-31 16:48:28,068 INFO L231 Difference]: Finished difference. Result has 39 places, 21 transitions, 102 flow [2024-01-31 16:48:28,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=39, PETRI_TRANSITIONS=21} [2024-01-31 16:48:28,069 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2024-01-31 16:48:28,070 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 21 transitions, 102 flow [2024-01-31 16:48:28,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 16:48:28,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:28,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:28,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:48:28,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:28,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:28,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1730750787, now seen corresponding path program 4 times [2024-01-31 16:48:28,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:28,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503766827] [2024-01-31 16:48:28,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:28,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:28,702 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 16:48:28,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:28,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503766827] [2024-01-31 16:48:28,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503766827] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:28,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:28,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:48:28,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683536016] [2024-01-31 16:48:28,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:28,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:48:28,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:28,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:48:28,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:48:28,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-31 16:48:28,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 21 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 16:48:28,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:28,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-31 16:48:28,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:28,884 INFO L124 PetriNetUnfolderBase]: 17/60 cut-off events. [2024-01-31 16:48:28,884 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-01-31 16:48:28,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 60 events. 17/60 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 137 event pairs, 0 based on Foata normal form. 1/61 useless extension candidates. Maximal degree in co-relation 205. Up to 20 conditions per place. [2024-01-31 16:48:28,885 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 18 selfloop transitions, 5 changer transitions 13/37 dead transitions. [2024-01-31 16:48:28,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 221 flow [2024-01-31 16:48:28,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:48:28,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:48:28,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2024-01-31 16:48:28,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-01-31 16:48:28,887 INFO L175 Difference]: Start difference. First operand has 39 places, 21 transitions, 102 flow. Second operand 6 states and 60 transitions. [2024-01-31 16:48:28,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 221 flow [2024-01-31 16:48:28,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 204 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-31 16:48:28,888 INFO L231 Difference]: Finished difference. Result has 38 places, 19 transitions, 83 flow [2024-01-31 16:48:28,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=83, PETRI_PLACES=38, PETRI_TRANSITIONS=19} [2024-01-31 16:48:28,889 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2024-01-31 16:48:28,889 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 19 transitions, 83 flow [2024-01-31 16:48:28,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 16:48:28,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:28,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:28,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:48:28,889 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:28,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:28,889 INFO L85 PathProgramCache]: Analyzing trace with hash 429796131, now seen corresponding path program 5 times [2024-01-31 16:48:28,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:28,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090258487] [2024-01-31 16:48:28,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:28,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:29,499 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 16:48:29,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:29,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090258487] [2024-01-31 16:48:29,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090258487] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:29,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:29,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:48:29,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478431961] [2024-01-31 16:48:29,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:29,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:48:29,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:29,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:48:29,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:48:29,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-31 16:48:29,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 19 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 16:48:29,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:29,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-31 16:48:29,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:29,700 INFO L124 PetriNetUnfolderBase]: 8/41 cut-off events. [2024-01-31 16:48:29,700 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-01-31 16:48:29,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 41 events. 8/41 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 134. Up to 19 conditions per place. [2024-01-31 16:48:29,701 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 15 selfloop transitions, 3 changer transitions 12/31 dead transitions. [2024-01-31 16:48:29,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 180 flow [2024-01-31 16:48:29,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:48:29,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:48:29,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 55 transitions. [2024-01-31 16:48:29,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-01-31 16:48:29,702 INFO L175 Difference]: Start difference. First operand has 38 places, 19 transitions, 83 flow. Second operand 6 states and 55 transitions. [2024-01-31 16:48:29,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 180 flow [2024-01-31 16:48:29,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 146 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-01-31 16:48:29,705 INFO L231 Difference]: Finished difference. Result has 34 places, 17 transitions, 58 flow [2024-01-31 16:48:29,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=17} [2024-01-31 16:48:29,706 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2024-01-31 16:48:29,706 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 17 transitions, 58 flow [2024-01-31 16:48:29,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 16:48:29,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:29,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:29,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:48:29,707 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:29,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:29,707 INFO L85 PathProgramCache]: Analyzing trace with hash 2040737089, now seen corresponding path program 6 times [2024-01-31 16:48:29,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:29,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814519611] [2024-01-31 16:48:29,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:29,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:30,260 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 16:48:30,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:30,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814519611] [2024-01-31 16:48:30,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814519611] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:30,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:30,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:48:30,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485476934] [2024-01-31 16:48:30,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:30,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:48:30,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:30,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:48:30,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:48:30,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-31 16:48:30,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 17 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 16:48:30,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:30,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-31 16:48:30,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:30,420 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2024-01-31 16:48:30,420 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-31 16:48:30,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 21 events. 3/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 62. Up to 8 conditions per place. [2024-01-31 16:48:30,421 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2024-01-31 16:48:30,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 18 transitions, 94 flow [2024-01-31 16:48:30,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:48:30,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:48:30,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 43 transitions. [2024-01-31 16:48:30,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3412698412698413 [2024-01-31 16:48:30,422 INFO L175 Difference]: Start difference. First operand has 34 places, 17 transitions, 58 flow. Second operand 6 states and 43 transitions. [2024-01-31 16:48:30,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 18 transitions, 94 flow [2024-01-31 16:48:30,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 82 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-31 16:48:30,423 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2024-01-31 16:48:30,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2024-01-31 16:48:30,425 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2024-01-31 16:48:30,426 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2024-01-31 16:48:30,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 16:48:30,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-01-31 16:48:30,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-01-31 16:48:30,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-31 16:48:30,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-31 16:48:30,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:48:30,431 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2024-01-31 16:48:30,433 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:48:30,434 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:48:30,439 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:48:30 BasicIcfg [2024-01-31 16:48:30,439 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:48:30,439 INFO L158 Benchmark]: Toolchain (without parser) took 7644.92ms. Allocated memory was 142.6MB in the beginning and 343.9MB in the end (delta: 201.3MB). Free memory was 65.7MB in the beginning and 117.7MB in the end (delta: -52.1MB). Peak memory consumption was 151.0MB. Max. memory is 16.1GB. [2024-01-31 16:48:30,441 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 142.6MB. Free memory is still 106.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:48:30,441 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 142.6MB. Free memory is still 71.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:48:30,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.64ms. Allocated memory was 142.6MB in the beginning and 174.1MB in the end (delta: 31.5MB). Free memory was 65.5MB in the beginning and 133.5MB in the end (delta: -68.0MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2024-01-31 16:48:30,445 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.04ms. Allocated memory is still 174.1MB. Free memory was 133.5MB in the beginning and 130.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:48:30,446 INFO L158 Benchmark]: Boogie Preprocessor took 52.97ms. Allocated memory is still 174.1MB. Free memory was 130.5MB in the beginning and 128.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:48:30,446 INFO L158 Benchmark]: RCFGBuilder took 904.19ms. Allocated memory is still 174.1MB. Free memory was 128.4MB in the beginning and 105.2MB in the end (delta: 23.2MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2024-01-31 16:48:30,446 INFO L158 Benchmark]: TraceAbstraction took 6345.72ms. Allocated memory was 174.1MB in the beginning and 343.9MB in the end (delta: 169.9MB). Free memory was 105.2MB in the beginning and 117.7MB in the end (delta: -12.5MB). Peak memory consumption was 159.5MB. Max. memory is 16.1GB. [2024-01-31 16:48:30,448 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 142.6MB. Free memory is still 106.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 142.6MB. Free memory is still 71.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.64ms. Allocated memory was 142.6MB in the beginning and 174.1MB in the end (delta: 31.5MB). Free memory was 65.5MB in the beginning and 133.5MB in the end (delta: -68.0MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.04ms. Allocated memory is still 174.1MB. Free memory was 133.5MB in the beginning and 130.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.97ms. Allocated memory is still 174.1MB. Free memory was 130.5MB in the beginning and 128.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 904.19ms. Allocated memory is still 174.1MB. Free memory was 128.4MB in the beginning and 105.2MB in the end (delta: 23.2MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6345.72ms. Allocated memory was 174.1MB in the beginning and 343.9MB in the end (delta: 169.9MB). Free memory was 105.2MB in the beginning and 117.7MB in the end (delta: -12.5MB). Peak memory consumption was 159.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 89]: 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 7 procedures, 31 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 180 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 180 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 430 IncrementalHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 0 mSDtfsCounter, 430 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=2, InterpolantAutomatonStates: 36, 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, 0.3s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 2489 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-31 16:48:30,477 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