./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/popl20-more-buffer-mult2.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/popl20-more-buffer-mult2.wvr.c ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/popl20-more-buffer-mult2.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:04:22,827 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:04:22,883 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:04:22,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:04:22,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:04:22,899 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:04:22,903 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:04:22,903 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:04:22,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:04:22,907 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:04:22,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:04:22,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:04:22,908 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:04:22,909 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:04:22,909 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:04:22,909 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:04:22,909 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:04:22,910 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:04:22,910 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:04:22,910 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:04:22,910 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:04:22,910 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:04:22,911 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:04:22,911 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:04:22,911 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:04:22,911 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:04:22,911 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:04:22,912 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:04:22,912 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:04:22,912 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:04:22,913 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:04:22,913 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:04:22,913 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:04:22,914 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:04:22,914 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:04:22,914 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:04:22,914 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:04:22,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:04:22,915 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:04:22,915 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:04:22,915 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:04:22,915 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:04:22,915 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:04:22,916 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:04:23,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:04:23,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:04:23,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:04:23,147 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:04:23,147 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:04:23,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/popl20-more-buffer-mult2.wvr.yml/witness.yml [2024-06-27 23:04:23,273 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:04:23,274 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:04:23,274 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2024-06-27 23:04:24,210 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:04:24,348 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:04:24,348 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2024-06-27 23:04:24,360 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58c217093/77b2a32a5ddb4e2f979467354bc90e26/FLAGdb18b94f5 [2024-06-27 23:04:24,765 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58c217093/77b2a32a5ddb4e2f979467354bc90e26 [2024-06-27 23:04:24,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:04:24,769 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:04:24,771 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:04:24,771 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:04:24,774 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:04:24,775 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:04:23" (1/2) ... [2024-06-27 23:04:24,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2282148f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:04:24, skipping insertion in model container [2024-06-27 23:04:24,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:04:23" (1/2) ... [2024-06-27 23:04:24,777 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@70732c42 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:04:24, skipping insertion in model container [2024-06-27 23:04:24,777 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:04:24" (2/2) ... [2024-06-27 23:04:24,777 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2282148f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:04:24, skipping insertion in model container [2024-06-27 23:04:24,777 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:04:24" (2/2) ... [2024-06-27 23:04:24,778 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:04:24,788 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:04:24,789 INFO L97 edCorrectnessWitness]: Location invariant before [L142-L142] ! multithreaded || ((((2147483648LL - (long long )i) + (long long )q1_back >= 0LL && (2147483648LL - (long long )j) + (long long )q2_back >= 0LL) && (2147483647LL + (long long )i) - (long long )q1_back >= 0LL) && (2147483647LL + (long long )j) - (long long )q2_back >= 0LL) [2024-06-27 23:04:24,789 INFO L97 edCorrectnessWitness]: Location invariant before [L139-L139] ! multithreaded || ((((2147483648LL - (long long )i) + (long long )q1_back >= 0LL && (2147483648LL - (long long )j) + (long long )q2_back >= 0LL) && (2147483647LL + (long long )i) - (long long )q1_back >= 0LL) && (2147483647LL + (long long )j) - (long long )q2_back >= 0LL) [2024-06-27 23:04:24,789 INFO L97 edCorrectnessWitness]: Location invariant before [L140-L140] ! multithreaded || ((((2147483648LL - (long long )i) + (long long )q1_back >= 0LL && (2147483648LL - (long long )j) + (long long )q2_back >= 0LL) && (2147483647LL + (long long )i) - (long long )q1_back >= 0LL) && (2147483647LL + (long long )j) - (long long )q2_back >= 0LL) [2024-06-27 23:04:24,789 INFO L97 edCorrectnessWitness]: Location invariant before [L141-L141] ! multithreaded || ((((2147483648LL - (long long )i) + (long long )q1_back >= 0LL && (2147483648LL - (long long )j) + (long long )q2_back >= 0LL) && (2147483647LL + (long long )i) - (long long )q1_back >= 0LL) && (2147483647LL + (long long )j) - (long long )q2_back >= 0LL) [2024-06-27 23:04:24,789 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:04:24,789 INFO L106 edCorrectnessWitness]: ghost_update [L138-L138] multithreaded = 1; [2024-06-27 23:04:24,816 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:04:24,956 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:04:24,963 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:04:25,020 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:04:25,032 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:04:25,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:04:25 WrapperNode [2024-06-27 23:04:25,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:04:25,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:04:25,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:04:25,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:04:25,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:04:25" (1/1) ... [2024-06-27 23:04:25,044 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:04:25" (1/1) ... [2024-06-27 23:04:25,095 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 301 [2024-06-27 23:04:25,100 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:04:25,101 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:04:25,101 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:04:25,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:04:25,109 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:04:25" (1/1) ... [2024-06-27 23:04:25,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:04:25" (1/1) ... [2024-06-27 23:04:25,113 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:04:25" (1/1) ... [2024-06-27 23:04:25,125 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-06-27 23:04:25,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:04:25" (1/1) ... [2024-06-27 23:04:25,126 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:04:25" (1/1) ... [2024-06-27 23:04:25,132 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:04:25" (1/1) ... [2024-06-27 23:04:25,135 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:04:25" (1/1) ... [2024-06-27 23:04:25,136 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:04:25" (1/1) ... [2024-06-27 23:04:25,137 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:04:25" (1/1) ... [2024-06-27 23:04:25,140 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:04:25,141 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:04:25,141 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:04:25,141 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:04:25,141 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:04:25" (1/1) ... [2024-06-27 23:04:25,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:04:25,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:04:25,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 23:04:25,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 23:04:25,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:04:25,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 23:04:25,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 23:04:25,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 23:04:25,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 23:04:25,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 23:04:25,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 23:04:25,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 23:04:25,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 23:04:25,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 23:04:25,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 23:04:25,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-27 23:04:25,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-27 23:04:25,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:04:25,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 23:04:25,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:04:25,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:04:25,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 23:04:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:04:25,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:04:25,211 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:04:25,296 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:04:25,298 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:04:25,610 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:04:25,610 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:04:25,981 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:04:25,982 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-27 23:04:25,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:04:25 BoogieIcfgContainer [2024-06-27 23:04:25,982 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:04:25,985 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:04:25,985 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:04:25,987 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:04:25,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:04:23" (1/4) ... [2024-06-27 23:04:25,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72366e3f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:04:25, skipping insertion in model container [2024-06-27 23:04:25,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:04:24" (2/4) ... [2024-06-27 23:04:25,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72366e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:04:25, skipping insertion in model container [2024-06-27 23:04:25,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:04:25" (3/4) ... [2024-06-27 23:04:25,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72366e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:04:25, skipping insertion in model container [2024-06-27 23:04:25,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:04:25" (4/4) ... [2024-06-27 23:04:25,991 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2024-06-27 23:04:26,005 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:04:26,006 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 23:04:26,006 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:04:26,068 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-27 23:04:26,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 55 transitions, 138 flow [2024-06-27 23:04:26,129 INFO L124 PetriNetUnfolderBase]: 6/51 cut-off events. [2024-06-27 23:04:26,130 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 23:04:26,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 51 events. 6/51 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 23:04:26,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 55 transitions, 138 flow [2024-06-27 23:04:26,136 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 49 transitions, 119 flow [2024-06-27 23:04:26,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:04:26,155 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;@2509e4ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:04:26,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 23:04:26,159 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:04:26,159 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2024-06-27 23:04:26,159 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:04:26,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:04:26,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:04:26,160 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:04:26,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:04:26,165 INFO L85 PathProgramCache]: Analyzing trace with hash -124526226, now seen corresponding path program 1 times [2024-06-27 23:04:26,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:04:26,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228371315] [2024-06-27 23:04:26,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:04:26,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:04:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:04:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:04:26,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:04:26,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228371315] [2024-06-27 23:04:26,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228371315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:04:26,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:04:26,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:04:26,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858685394] [2024-06-27 23:04:26,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:04:26,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:04:26,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:04:26,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:04:26,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:04:26,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-06-27 23:04:26,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:04:26,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:04:26,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-06-27 23:04:26,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:04:27,047 INFO L124 PetriNetUnfolderBase]: 1639/2607 cut-off events. [2024-06-27 23:04:27,048 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2024-06-27 23:04:27,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4961 conditions, 2607 events. 1639/2607 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 15218 event pairs, 308 based on Foata normal form. 36/2490 useless extension candidates. Maximal degree in co-relation 4431. Up to 1758 conditions per place. [2024-06-27 23:04:27,090 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 47 selfloop transitions, 3 changer transitions 2/70 dead transitions. [2024-06-27 23:04:27,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 283 flow [2024-06-27 23:04:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:04:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:04:27,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-06-27 23:04:27,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7393939393939394 [2024-06-27 23:04:27,103 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 119 flow. Second operand 3 states and 122 transitions. [2024-06-27 23:04:27,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 283 flow [2024-06-27 23:04:27,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 259 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 23:04:27,114 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 131 flow [2024-06-27 23:04:27,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2024-06-27 23:04:27,118 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2024-06-27 23:04:27,118 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 131 flow [2024-06-27 23:04:27,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:04:27,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:04:27,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:04:27,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:04:27,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:04:27,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:04:27,121 INFO L85 PathProgramCache]: Analyzing trace with hash -493343477, now seen corresponding path program 1 times [2024-06-27 23:04:27,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:04:27,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732859233] [2024-06-27 23:04:27,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:04:27,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:04:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:04:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:04:27,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:04:27,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732859233] [2024-06-27 23:04:27,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732859233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:04:27,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:04:27,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:04:27,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623974660] [2024-06-27 23:04:27,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:04:27,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:04:27,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:04:27,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:04:27,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:04:27,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 55 [2024-06-27 23:04:27,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:04:27,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:04:27,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 55 [2024-06-27 23:04:27,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:04:27,568 INFO L124 PetriNetUnfolderBase]: 1715/2926 cut-off events. [2024-06-27 23:04:27,568 INFO L125 PetriNetUnfolderBase]: For 774/786 co-relation queries the response was YES. [2024-06-27 23:04:27,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6300 conditions, 2926 events. 1715/2926 cut-off events. For 774/786 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 19963 event pairs, 1206 based on Foata normal form. 176/2905 useless extension candidates. Maximal degree in co-relation 1971. Up to 1661 conditions per place. [2024-06-27 23:04:27,583 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 50 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-06-27 23:04:27,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 302 flow [2024-06-27 23:04:27,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:04:27,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:04:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-06-27 23:04:27,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6654545454545454 [2024-06-27 23:04:27,586 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 131 flow. Second operand 5 states and 183 transitions. [2024-06-27 23:04:27,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 302 flow [2024-06-27 23:04:27,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:04:27,588 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 160 flow [2024-06-27 23:04:27,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-06-27 23:04:27,588 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-27 23:04:27,589 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 160 flow [2024-06-27 23:04:27,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:04:27,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:04:27,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:04:27,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:04:27,589 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:04:27,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:04:27,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1055011857, now seen corresponding path program 1 times [2024-06-27 23:04:27,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:04:27,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216988778] [2024-06-27 23:04:27,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:04:27,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:04:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:04:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:04:27,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:04:27,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216988778] [2024-06-27 23:04:27,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216988778] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 23:04:27,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912849736] [2024-06-27 23:04:27,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:04:27,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:04:27,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:04:27,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 23:04:27,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 23:04:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:04:27,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2024-06-27 23:04:27,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 23:04:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 23:04:28,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 23:04:28,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912849736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:04:28,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 23:04:28,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2024-06-27 23:04:28,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311061947] [2024-06-27 23:04:28,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:04:28,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:04:28,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:04:28,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:04:28,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:04:28,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-06-27 23:04:28,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:04:28,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:04:28,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-06-27 23:04:28,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:04:28,423 INFO L124 PetriNetUnfolderBase]: 2534/4205 cut-off events. [2024-06-27 23:04:28,424 INFO L125 PetriNetUnfolderBase]: For 1547/1715 co-relation queries the response was YES. [2024-06-27 23:04:28,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9379 conditions, 4205 events. 2534/4205 cut-off events. For 1547/1715 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 28204 event pairs, 474 based on Foata normal form. 54/4091 useless extension candidates. Maximal degree in co-relation 7483. Up to 2307 conditions per place. [2024-06-27 23:04:28,448 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 69 selfloop transitions, 5 changer transitions 2/94 dead transitions. [2024-06-27 23:04:28,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 94 transitions, 416 flow [2024-06-27 23:04:28,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:04:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:04:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-06-27 23:04:28,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-06-27 23:04:28,452 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 160 flow. Second operand 4 states and 165 transitions. [2024-06-27 23:04:28,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 94 transitions, 416 flow [2024-06-27 23:04:28,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 412 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 23:04:28,457 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 191 flow [2024-06-27 23:04:28,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-06-27 23:04:28,458 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2024-06-27 23:04:28,458 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 191 flow [2024-06-27 23:04:28,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:04:28,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:04:28,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:04:28,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-06-27 23:04:28,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:04:28,670 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:04:28,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:04:28,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1193069352, now seen corresponding path program 1 times [2024-06-27 23:04:28,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:04:28,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165584078] [2024-06-27 23:04:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:04:28,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:04:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:04:28,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:04:28,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:04:28,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165584078] [2024-06-27 23:04:28,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165584078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:04:28,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:04:28,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:04:28,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528937646] [2024-06-27 23:04:28,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:04:28,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:04:28,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:04:28,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:04:28,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:04:28,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 55 [2024-06-27 23:04:28,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:04:28,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:04:28,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 55 [2024-06-27 23:04:28,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:04:29,273 INFO L124 PetriNetUnfolderBase]: 2970/5233 cut-off events. [2024-06-27 23:04:29,273 INFO L125 PetriNetUnfolderBase]: For 5560/5618 co-relation queries the response was YES. [2024-06-27 23:04:29,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12847 conditions, 5233 events. 2970/5233 cut-off events. For 5560/5618 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 40272 event pairs, 2279 based on Foata normal form. 275/5160 useless extension candidates. Maximal degree in co-relation 10490. Up to 2855 conditions per place. [2024-06-27 23:04:29,297 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 53 selfloop transitions, 4 changer transitions 2/81 dead transitions. [2024-06-27 23:04:29,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 81 transitions, 395 flow [2024-06-27 23:04:29,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:04:29,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:04:29,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-06-27 23:04:29,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2024-06-27 23:04:29,299 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 191 flow. Second operand 4 states and 155 transitions. [2024-06-27 23:04:29,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 81 transitions, 395 flow [2024-06-27 23:04:29,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 81 transitions, 380 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 23:04:29,302 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 213 flow [2024-06-27 23:04:29,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-06-27 23:04:29,303 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2024-06-27 23:04:29,303 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 213 flow [2024-06-27 23:04:29,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:04:29,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:04:29,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:04:29,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:04:29,304 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:04:29,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:04:29,305 INFO L85 PathProgramCache]: Analyzing trace with hash 952147664, now seen corresponding path program 1 times [2024-06-27 23:04:29,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:04:29,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114548876] [2024-06-27 23:04:29,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:04:29,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:04:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:04:29,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:04:29,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:04:29,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114548876] [2024-06-27 23:04:29,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114548876] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 23:04:29,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266187324] [2024-06-27 23:04:29,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:04:29,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:04:29,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:04:29,489 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 23:04:29,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 23:04:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:04:29,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 12 conjunts are in the unsatisfiable core [2024-06-27 23:04:29,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 23:04:29,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 23:04:29,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 23:04:29,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266187324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:04:29,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 23:04:29,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-06-27 23:04:29,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813328109] [2024-06-27 23:04:29,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:04:29,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:04:29,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:04:29,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:04:29,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:04:29,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-06-27 23:04:29,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 213 flow. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:04:29,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:04:29,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-06-27 23:04:29,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:04:30,460 INFO L124 PetriNetUnfolderBase]: 5252/8444 cut-off events. [2024-06-27 23:04:30,461 INFO L125 PetriNetUnfolderBase]: For 8531/8775 co-relation queries the response was YES. [2024-06-27 23:04:30,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21424 conditions, 8444 events. 5252/8444 cut-off events. For 8531/8775 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 62352 event pairs, 1526 based on Foata normal form. 206/8280 useless extension candidates. Maximal degree in co-relation 17667. Up to 3484 conditions per place. [2024-06-27 23:04:30,498 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 75 selfloop transitions, 7 changer transitions 2/100 dead transitions. [2024-06-27 23:04:30,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 100 transitions, 525 flow [2024-06-27 23:04:30,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:04:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:04:30,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2024-06-27 23:04:30,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6509090909090909 [2024-06-27 23:04:30,500 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 213 flow. Second operand 5 states and 179 transitions. [2024-06-27 23:04:30,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 100 transitions, 525 flow [2024-06-27 23:04:30,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 100 transitions, 520 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 23:04:30,505 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 262 flow [2024-06-27 23:04:30,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=262, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-06-27 23:04:30,506 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-06-27 23:04:30,506 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 262 flow [2024-06-27 23:04:30,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:04:30,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:04:30,506 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:04:30,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-27 23:04:30,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:04:30,718 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:04:30,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:04:30,719 INFO L85 PathProgramCache]: Analyzing trace with hash -681306683, now seen corresponding path program 1 times [2024-06-27 23:04:30,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:04:30,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720110651] [2024-06-27 23:04:30,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:04:30,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:04:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:04:30,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:04:30,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:04:30,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720110651] [2024-06-27 23:04:30,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720110651] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 23:04:30,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136001565] [2024-06-27 23:04:30,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:04:30,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:04:30,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:04:30,804 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 23:04:30,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 23:04:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:04:30,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-27 23:04:30,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 23:04:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:04:30,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 23:04:30,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:04:30,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136001565] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 23:04:30,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 23:04:30,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-06-27 23:04:30,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414523914] [2024-06-27 23:04:30,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 23:04:30,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:04:30,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:04:30,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:04:30,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:04:31,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 55 [2024-06-27 23:04:31,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 262 flow. Second operand has 12 states, 12 states have (on average 27.5) internal successors, (330), 12 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:04:31,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:04:31,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 55 [2024-06-27 23:04:31,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:04:32,482 INFO L124 PetriNetUnfolderBase]: 7272/12462 cut-off events. [2024-06-27 23:04:32,483 INFO L125 PetriNetUnfolderBase]: For 19559/19745 co-relation queries the response was YES. [2024-06-27 23:04:32,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32384 conditions, 12462 events. 7272/12462 cut-off events. For 19559/19745 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 103468 event pairs, 3847 based on Foata normal form. 412/12263 useless extension candidates. Maximal degree in co-relation 14711. Up to 4421 conditions per place. [2024-06-27 23:04:32,535 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 104 selfloop transitions, 13 changer transitions 1/140 dead transitions. [2024-06-27 23:04:32,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 140 transitions, 823 flow [2024-06-27 23:04:32,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:04:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:04:32,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 387 transitions. [2024-06-27 23:04:32,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6396694214876033 [2024-06-27 23:04:32,537 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 262 flow. Second operand 11 states and 387 transitions. [2024-06-27 23:04:32,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 140 transitions, 823 flow [2024-06-27 23:04:32,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 140 transitions, 818 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:04:32,552 INFO L231 Difference]: Finished difference. Result has 84 places, 69 transitions, 377 flow [2024-06-27 23:04:32,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=377, PETRI_PLACES=84, PETRI_TRANSITIONS=69} [2024-06-27 23:04:32,553 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 28 predicate places. [2024-06-27 23:04:32,553 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 69 transitions, 377 flow [2024-06-27 23:04:32,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.5) internal successors, (330), 12 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:04:32,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:04:32,554 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:04:32,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-06-27 23:04:32,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:04:32,765 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:04:32,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:04:32,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1826382949, now seen corresponding path program 2 times [2024-06-27 23:04:32,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:04:32,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601770625] [2024-06-27 23:04:32,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:04:32,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:04:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:04:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:04:32,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:04:32,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601770625] [2024-06-27 23:04:32,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601770625] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 23:04:32,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578992785] [2024-06-27 23:04:32,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 23:04:32,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:04:32,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:04:32,969 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 23:04:32,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-27 23:04:33,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 23:04:33,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 23:04:33,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 20 conjunts are in the unsatisfiable core [2024-06-27 23:04:33,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 23:04:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 23:04:33,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 23:04:33,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 23:04:33,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578992785] provided 1 perfect and 1 imperfect interpolant sequences [2024-06-27 23:04:33,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-06-27 23:04:33,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6, 3] total 11 [2024-06-27 23:04:33,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705086077] [2024-06-27 23:04:33,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:04:33,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:04:33,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:04:33,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:04:33,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:04:33,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-06-27 23:04:33,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 69 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:04:33,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:04:33,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-06-27 23:04:33,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:04:34,326 INFO L124 PetriNetUnfolderBase]: 6212/10303 cut-off events. [2024-06-27 23:04:34,329 INFO L125 PetriNetUnfolderBase]: For 23836/23836 co-relation queries the response was YES. [2024-06-27 23:04:34,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29057 conditions, 10303 events. 6212/10303 cut-off events. For 23836/23836 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 83245 event pairs, 4808 based on Foata normal form. 222/9773 useless extension candidates. Maximal degree in co-relation 26143. Up to 8523 conditions per place. [2024-06-27 23:04:34,369 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 0 selfloop transitions, 0 changer transitions 65/65 dead transitions. [2024-06-27 23:04:34,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 65 transitions, 435 flow [2024-06-27 23:04:34,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:04:34,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:04:34,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-06-27 23:04:34,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878787878787879 [2024-06-27 23:04:34,370 INFO L175 Difference]: Start difference. First operand has 84 places, 69 transitions, 377 flow. Second operand 3 states and 97 transitions. [2024-06-27 23:04:34,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 65 transitions, 435 flow [2024-06-27 23:04:34,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 65 transitions, 397 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 23:04:34,378 INFO L231 Difference]: Finished difference. Result has 77 places, 0 transitions, 0 flow [2024-06-27 23:04:34,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=77, PETRI_TRANSITIONS=0} [2024-06-27 23:04:34,378 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2024-06-27 23:04:34,378 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 0 transitions, 0 flow [2024-06-27 23:04:34,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:04:34,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 8 remaining) [2024-06-27 23:04:34,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 8 remaining) [2024-06-27 23:04:34,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 8 remaining) [2024-06-27 23:04:34,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 8 remaining) [2024-06-27 23:04:34,382 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2024-06-27 23:04:34,382 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-06-27 23:04:34,382 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-06-27 23:04:34,382 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-06-27 23:04:34,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-27 23:04:34,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:04:34,593 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-06-27 23:04:34,596 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 23:04:34,596 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 23:04:34,599 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-27 23:04:34,599 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-27 23:04:34,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 11:04:34 BasicIcfg [2024-06-27 23:04:34,600 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 23:04:34,600 INFO L158 Benchmark]: Toolchain (without parser) took 9831.30ms. Allocated memory was 184.5MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 112.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 534.1MB. Max. memory is 16.1GB. [2024-06-27 23:04:34,601 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 111.1MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:04:34,601 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 158.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:04:34,601 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.98ms. Allocated memory is still 184.5MB. Free memory was 112.3MB in the beginning and 146.9MB in the end (delta: -34.6MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2024-06-27 23:04:34,601 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.29ms. Allocated memory is still 184.5MB. Free memory was 146.9MB in the beginning and 144.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 23:04:34,601 INFO L158 Benchmark]: Boogie Preprocessor took 39.33ms. Allocated memory is still 184.5MB. Free memory was 144.2MB in the beginning and 140.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 23:04:34,602 INFO L158 Benchmark]: RCFGBuilder took 841.98ms. Allocated memory is still 184.5MB. Free memory was 140.7MB in the beginning and 148.1MB in the end (delta: -7.5MB). Peak memory consumption was 92.8MB. Max. memory is 16.1GB. [2024-06-27 23:04:34,602 INFO L158 Benchmark]: TraceAbstraction took 8614.98ms. Allocated memory was 184.5MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 147.1MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 566.5MB. Max. memory is 16.1GB. [2024-06-27 23:04:34,603 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 111.1MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 158.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.98ms. Allocated memory is still 184.5MB. Free memory was 112.3MB in the beginning and 146.9MB in the end (delta: -34.6MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.29ms. Allocated memory is still 184.5MB. Free memory was 146.9MB in the beginning and 144.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.33ms. Allocated memory is still 184.5MB. Free memory was 144.2MB in the beginning and 140.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 841.98ms. Allocated memory is still 184.5MB. Free memory was 140.7MB in the beginning and 148.1MB in the end (delta: -7.5MB). Peak memory consumption was 92.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8614.98ms. Allocated memory was 184.5MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 147.1MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 566.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 139]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 140]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 141]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 142]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 78 locations, 8 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: 8.5s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 539 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 449 mSDsluCounter, 89 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 70 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1064 IncrementalHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 19 mSDtfsCounter, 1064 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=377occurred in iteration=6, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 2128 SizeOfPredicates, 11 NumberOfNonLiveVariables, 625 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 12/28 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 23:04:34,622 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