./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-three-array-max.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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-three-array-max.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-three-array-max.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-cde23df-m [2024-06-14 14:21:11,085 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 14:21:11,120 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 14:21:11,123 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 14:21:11,124 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 14:21:11,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 14:21:11,139 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 14:21:11,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 14:21:11,139 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 14:21:11,140 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 14:21:11,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 14:21:11,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 14:21:11,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 14:21:11,141 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 14:21:11,141 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 14:21:11,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 14:21:11,142 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 14:21:11,142 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 14:21:11,143 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 14:21:11,143 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 14:21:11,143 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 14:21:11,144 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 14:21:11,144 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 14:21:11,144 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 14:21:11,144 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 14:21:11,145 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 14:21:11,145 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 14:21:11,145 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 14:21:11,145 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 14:21:11,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 14:21:11,146 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 14:21:11,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 14:21:11,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:21:11,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 14:21:11,147 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 14:21:11,147 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 14:21:11,147 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 14:21:11,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 14:21:11,148 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 14:21:11,148 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 14:21:11,148 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 14:21:11,149 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 14:21:11,149 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 14:21:11,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 14:21:11,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 14:21:11,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 14:21:11,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 14:21:11,338 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 14:21:11,339 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 14:21:11,340 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-three-array-max.wvr.yml/witness.yml [2024-06-14 14:21:11,473 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 14:21:11,473 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 14:21:11,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2024-06-14 14:21:12,459 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 14:21:12,621 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 14:21:12,621 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2024-06-14 14:21:12,628 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9dd15c06/774677b9fe90451cb5916be5d8757a36/FLAGa0b065044 [2024-06-14 14:21:12,640 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9dd15c06/774677b9fe90451cb5916be5d8757a36 [2024-06-14 14:21:12,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 14:21:12,642 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 14:21:12,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 14:21:12,644 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 14:21:12,647 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 14:21:12,648 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:21:11" (1/2) ... [2024-06-14 14:21:12,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b21372 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:12, skipping insertion in model container [2024-06-14 14:21:12,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:21:11" (1/2) ... [2024-06-14 14:21:12,650 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@28f098ea and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:12, skipping insertion in model container [2024-06-14 14:21:12,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:21:12" (2/2) ... [2024-06-14 14:21:12,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b21372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:12, skipping insertion in model container [2024-06-14 14:21:12,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:21:12" (2/2) ... [2024-06-14 14:21:12,652 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 14:21:12,675 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 14:21:12,676 INFO L97 edCorrectnessWitness]: Location invariant before [L107-L107] ((! multithreaded || ((0 <= p && 1 <= p) && p != 0)) && (! multithreaded || ((4294967295LL + (long long )N) - (long long )p >= 0LL && (4294967294LL - (long long )N) - (long long )p >= 0LL))) && (! multithreaded || (0 <= p && p != 0)) [2024-06-14 14:21:12,676 INFO L97 edCorrectnessWitness]: Location invariant before [L109-L109] ((! multithreaded || ((0 <= p && 1 <= p) && p != 0)) && (! multithreaded || ((4294967295LL + (long long )N) - (long long )p >= 0LL && (4294967294LL - (long long )N) - (long long )p >= 0LL))) && (! multithreaded || (0 <= p && p != 0)) [2024-06-14 14:21:12,676 INFO L97 edCorrectnessWitness]: Location invariant before [L108-L108] ((! multithreaded || ((0 <= p && 1 <= p) && p != 0)) && (! multithreaded || ((4294967295LL + (long long )N) - (long long )p >= 0LL && (4294967294LL - (long long )N) - (long long )p >= 0LL))) && (! multithreaded || (0 <= p && p != 0)) [2024-06-14 14:21:12,677 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 14:21:12,677 INFO L106 edCorrectnessWitness]: ghost_update [L106-L106] multithreaded = 1; [2024-06-14 14:21:12,693 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 14:21:12,849 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:21:12,855 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 14:21:12,912 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:21:12,952 INFO L206 MainTranslator]: Completed translation [2024-06-14 14:21:12,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:12 WrapperNode [2024-06-14 14:21:12,968 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 14:21:12,969 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 14:21:12,969 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 14:21:12,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 14:21:12,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:12" (1/1) ... [2024-06-14 14:21:12,992 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:12" (1/1) ... [2024-06-14 14:21:13,062 INFO L138 Inliner]: procedures = 25, calls = 43, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 230 [2024-06-14 14:21:13,062 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 14:21:13,063 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 14:21:13,063 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 14:21:13,063 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 14:21:13,072 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:12" (1/1) ... [2024-06-14 14:21:13,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:12" (1/1) ... [2024-06-14 14:21:13,076 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:12" (1/1) ... [2024-06-14 14:21:13,092 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-06-14 14:21:13,101 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:12" (1/1) ... [2024-06-14 14:21:13,102 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:12" (1/1) ... [2024-06-14 14:21:13,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:12" (1/1) ... [2024-06-14 14:21:13,112 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:12" (1/1) ... [2024-06-14 14:21:13,113 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:12" (1/1) ... [2024-06-14 14:21:13,114 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:12" (1/1) ... [2024-06-14 14:21:13,116 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 14:21:13,117 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 14:21:13,117 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 14:21:13,117 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 14:21:13,132 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:12" (1/1) ... [2024-06-14 14:21:13,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:21:13,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:21:13,157 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) [2024-06-14 14:21:13,174 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 [2024-06-14 14:21:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 14:21:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-14 14:21:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-14 14:21:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-14 14:21:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-14 14:21:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-14 14:21:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-14 14:21:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 14:21:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-14 14:21:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-14 14:21:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-14 14:21:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 14:21:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 14:21:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-14 14:21:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 14:21:13,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 14:21:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-14 14:21:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-14 14:21:13,187 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 14:21:13,267 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 14:21:13,269 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 14:21:13,553 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 14:21:13,554 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 14:21:13,832 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 14:21:13,833 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-14 14:21:13,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:21:13 BoogieIcfgContainer [2024-06-14 14:21:13,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 14:21:13,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 14:21:13,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 14:21:13,841 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 14:21:13,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:21:11" (1/4) ... [2024-06-14 14:21:13,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecf552d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 02:21:13, skipping insertion in model container [2024-06-14 14:21:13,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 02:21:12" (2/4) ... [2024-06-14 14:21:13,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecf552d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 02:21:13, skipping insertion in model container [2024-06-14 14:21:13,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:12" (3/4) ... [2024-06-14 14:21:13,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecf552d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 02:21:13, skipping insertion in model container [2024-06-14 14:21:13,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:21:13" (4/4) ... [2024-06-14 14:21:13,845 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2024-06-14 14:21:13,863 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 14:21:13,863 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-14 14:21:13,863 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 14:21:13,949 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-14 14:21:13,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 45 transitions, 111 flow [2024-06-14 14:21:14,007 INFO L124 PetriNetUnfolderBase]: 7/42 cut-off events. [2024-06-14 14:21:14,007 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-14 14:21:14,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 7/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-06-14 14:21:14,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 45 transitions, 111 flow [2024-06-14 14:21:14,013 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 40 transitions, 95 flow [2024-06-14 14:21:14,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 14:21:14,033 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;@fbbe1ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 14:21:14,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-14 14:21:14,038 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 14:21:14,038 INFO L124 PetriNetUnfolderBase]: 4/13 cut-off events. [2024-06-14 14:21:14,039 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 14:21:14,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:14,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:14,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:21:14,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:14,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1249812076, now seen corresponding path program 1 times [2024-06-14 14:21:14,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:14,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636478750] [2024-06-14 14:21:14,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:14,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:14,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:14,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636478750] [2024-06-14 14:21:14,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636478750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:14,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:14,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 14:21:14,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904368836] [2024-06-14 14:21:14,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:14,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 14:21:14,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:14,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 14:21:14,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 14:21:14,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-14 14:21:14,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-06-14 14:21:14,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:14,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-14 14:21:14,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:14,668 INFO L124 PetriNetUnfolderBase]: 389/708 cut-off events. [2024-06-14 14:21:14,668 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-14 14:21:14,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1294 conditions, 708 events. 389/708 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3125 event pairs, 245 based on Foata normal form. 0/610 useless extension candidates. Maximal degree in co-relation 1112. Up to 529 conditions per place. [2024-06-14 14:21:14,678 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 28 selfloop transitions, 2 changer transitions 1/41 dead transitions. [2024-06-14 14:21:14,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 159 flow [2024-06-14 14:21:14,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 14:21:14,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 14:21:14,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-06-14 14:21:14,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5259259259259259 [2024-06-14 14:21:14,689 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 95 flow. Second operand 3 states and 71 transitions. [2024-06-14 14:21:14,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 159 flow [2024-06-14 14:21:14,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 150 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-14 14:21:14,695 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 95 flow [2024-06-14 14:21:14,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2024-06-14 14:21:14,700 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2024-06-14 14:21:14,701 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 95 flow [2024-06-14 14:21:14,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-06-14 14:21:14,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:14,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:14,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 14:21:14,702 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:21:14,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:14,703 INFO L85 PathProgramCache]: Analyzing trace with hash 588053062, now seen corresponding path program 1 times [2024-06-14 14:21:14,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:14,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893624555] [2024-06-14 14:21:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:14,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-14 14:21:14,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:14,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893624555] [2024-06-14 14:21:14,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893624555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:14,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:14,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 14:21:14,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908563071] [2024-06-14 14:21:14,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:14,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 14:21:14,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:14,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 14:21:14,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 14:21:14,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-14 14:21:14,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-06-14 14:21:14,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:14,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-14 14:21:14,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:15,010 INFO L124 PetriNetUnfolderBase]: 385/701 cut-off events. [2024-06-14 14:21:15,012 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-06-14 14:21:15,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 701 events. 385/701 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3091 event pairs, 242 based on Foata normal form. 0/604 useless extension candidates. Maximal degree in co-relation 1250. Up to 520 conditions per place. [2024-06-14 14:21:15,016 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 26 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2024-06-14 14:21:15,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 163 flow [2024-06-14 14:21:15,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:21:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:21:15,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-06-14 14:21:15,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-14 14:21:15,020 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 95 flow. Second operand 4 states and 86 transitions. [2024-06-14 14:21:15,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 163 flow [2024-06-14 14:21:15,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 159 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-14 14:21:15,023 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 119 flow [2024-06-14 14:21:15,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2024-06-14 14:21:15,026 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-14 14:21:15,026 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 119 flow [2024-06-14 14:21:15,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-06-14 14:21:15,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:15,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:15,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 14:21:15,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:21:15,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:15,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1761604551, now seen corresponding path program 1 times [2024-06-14 14:21:15,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:15,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219397118] [2024-06-14 14:21:15,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:15,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-14 14:21:15,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:15,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219397118] [2024-06-14 14:21:15,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219397118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:15,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:15,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 14:21:15,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973843736] [2024-06-14 14:21:15,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:15,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 14:21:15,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:15,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 14:21:15,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 14:21:15,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 14:21:15,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-06-14 14:21:15,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:15,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 14:21:15,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:15,373 INFO L124 PetriNetUnfolderBase]: 754/1202 cut-off events. [2024-06-14 14:21:15,373 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-06-14 14:21:15,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2280 conditions, 1202 events. 754/1202 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5103 event pairs, 233 based on Foata normal form. 36/1098 useless extension candidates. Maximal degree in co-relation 2260. Up to 664 conditions per place. [2024-06-14 14:21:15,379 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 44 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-06-14 14:21:15,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 244 flow [2024-06-14 14:21:15,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:21:15,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:21:15,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-06-14 14:21:15,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43555555555555553 [2024-06-14 14:21:15,381 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 119 flow. Second operand 5 states and 98 transitions. [2024-06-14 14:21:15,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 244 flow [2024-06-14 14:21:15,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 14:21:15,382 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 134 flow [2024-06-14 14:21:15,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2024-06-14 14:21:15,383 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-14 14:21:15,383 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 134 flow [2024-06-14 14:21:15,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-06-14 14:21:15,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:15,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:15,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 14:21:15,384 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:21:15,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:15,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1343429514, now seen corresponding path program 1 times [2024-06-14 14:21:15,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:15,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345823992] [2024-06-14 14:21:15,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:15,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-14 14:21:15,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345823992] [2024-06-14 14:21:15,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345823992] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-14 14:21:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126054580] [2024-06-14 14:21:15,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:15,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 14:21:15,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:21:15,525 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) [2024-06-14 14:21:15,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-14 14:21:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:15,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-14 14:21:15,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-14 14:21:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-14 14:21:15,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-14 14:21:15,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-14 14:21:15,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126054580] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-14 14:21:15,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-14 14:21:15,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-06-14 14:21:15,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450399589] [2024-06-14 14:21:15,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-14 14:21:15,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:21:15,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:15,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:21:15,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:21:15,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 14:21:15,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 134 flow. Second operand has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 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) [2024-06-14 14:21:15,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:15,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 14:21:15,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:16,127 INFO L124 PetriNetUnfolderBase]: 1134/1958 cut-off events. [2024-06-14 14:21:16,127 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-06-14 14:21:16,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3771 conditions, 1958 events. 1134/1958 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9748 event pairs, 685 based on Foata normal form. 0/1640 useless extension candidates. Maximal degree in co-relation 2875. Up to 1160 conditions per place. [2024-06-14 14:21:16,136 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 28 selfloop transitions, 9 changer transitions 41/86 dead transitions. [2024-06-14 14:21:16,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 86 transitions, 424 flow [2024-06-14 14:21:16,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:21:16,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:21:16,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-14 14:21:16,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-14 14:21:16,138 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 134 flow. Second operand 8 states and 174 transitions. [2024-06-14 14:21:16,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 86 transitions, 424 flow [2024-06-14 14:21:16,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 86 transitions, 413 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 14:21:16,140 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 180 flow [2024-06-14 14:21:16,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=180, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-06-14 14:21:16,141 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-06-14 14:21:16,141 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 180 flow [2024-06-14 14:21:16,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 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) [2024-06-14 14:21:16,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:16,141 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:16,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-14 14:21:16,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 14:21:16,352 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:21:16,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:16,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1673906039, now seen corresponding path program 2 times [2024-06-14 14:21:16,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:16,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651281847] [2024-06-14 14:21:16,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:16,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-14 14:21:16,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:16,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651281847] [2024-06-14 14:21:16,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651281847] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-14 14:21:16,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343763115] [2024-06-14 14:21:16,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-14 14:21:16,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 14:21:16,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:21:16,560 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) [2024-06-14 14:21:16,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-14 14:21:16,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-14 14:21:16,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-14 14:21:16,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-14 14:21:16,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-14 14:21:16,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-06-14 14:21:16,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-14 14:21:16,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343763115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:16,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-14 14:21:16,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-06-14 14:21:16,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507267932] [2024-06-14 14:21:16,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:16,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:21:16,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:16,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:21:16,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:21:16,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 14:21:16,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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) [2024-06-14 14:21:16,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:16,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 14:21:16,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:17,095 INFO L124 PetriNetUnfolderBase]: 1383/2076 cut-off events. [2024-06-14 14:21:17,096 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-06-14 14:21:17,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4685 conditions, 2076 events. 1383/2076 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 9064 event pairs, 495 based on Foata normal form. 72/1769 useless extension candidates. Maximal degree in co-relation 4651. Up to 1098 conditions per place. [2024-06-14 14:21:17,118 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 86 selfloop transitions, 7 changer transitions 0/99 dead transitions. [2024-06-14 14:21:17,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 99 transitions, 496 flow [2024-06-14 14:21:17,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:21:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:21:17,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-14 14:21:17,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-14 14:21:17,133 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 180 flow. Second operand 7 states and 154 transitions. [2024-06-14 14:21:17,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 99 transitions, 496 flow [2024-06-14 14:21:17,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 99 transitions, 468 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-14 14:21:17,137 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 207 flow [2024-06-14 14:21:17,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=207, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-14 14:21:17,138 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2024-06-14 14:21:17,138 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 207 flow [2024-06-14 14:21:17,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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) [2024-06-14 14:21:17,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:17,138 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:17,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-14 14:21:17,338 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 [2024-06-14 14:21:17,339 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:21:17,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:17,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1184435588, now seen corresponding path program 1 times [2024-06-14 14:21:17,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:17,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541960145] [2024-06-14 14:21:17,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:17,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-14 14:21:17,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:17,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541960145] [2024-06-14 14:21:17,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541960145] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-14 14:21:17,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794487118] [2024-06-14 14:21:17,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:17,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 14:21:17,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:21:17,440 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) [2024-06-14 14:21:17,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-14 14:21:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:17,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-14 14:21:17,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-14 14:21:17,610 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-14 14:21:17,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-14 14:21:17,665 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-14 14:21:17,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794487118] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-14 14:21:17,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-14 14:21:17,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-06-14 14:21:17,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106784423] [2024-06-14 14:21:17,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-14 14:21:17,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-06-14 14:21:17,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:17,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-06-14 14:21:17,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2024-06-14 14:21:17,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 14:21:17,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 207 flow. Second operand has 17 states, 17 states have (on average 14.235294117647058) internal successors, (242), 17 states have internal predecessors, (242), 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) [2024-06-14 14:21:17,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:17,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 14:21:17,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:18,144 INFO L124 PetriNetUnfolderBase]: 1917/3031 cut-off events. [2024-06-14 14:21:18,144 INFO L125 PetriNetUnfolderBase]: For 988/1027 co-relation queries the response was YES. [2024-06-14 14:21:18,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7222 conditions, 3031 events. 1917/3031 cut-off events. For 988/1027 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14783 event pairs, 1102 based on Foata normal form. 0/2515 useless extension candidates. Maximal degree in co-relation 4678. Up to 1684 conditions per place. [2024-06-14 14:21:18,156 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 32 selfloop transitions, 12 changer transitions 63/115 dead transitions. [2024-06-14 14:21:18,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 115 transitions, 660 flow [2024-06-14 14:21:18,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:21:18,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:21:18,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 247 transitions. [2024-06-14 14:21:18,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45740740740740743 [2024-06-14 14:21:18,158 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 207 flow. Second operand 12 states and 247 transitions. [2024-06-14 14:21:18,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 115 transitions, 660 flow [2024-06-14 14:21:18,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 115 transitions, 647 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 14:21:18,163 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 272 flow [2024-06-14 14:21:18,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=272, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2024-06-14 14:21:18,164 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2024-06-14 14:21:18,164 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 272 flow [2024-06-14 14:21:18,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.235294117647058) internal successors, (242), 17 states have internal predecessors, (242), 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) [2024-06-14 14:21:18,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:18,165 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:18,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-14 14:21:18,376 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 [2024-06-14 14:21:18,377 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:21:18,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:18,377 INFO L85 PathProgramCache]: Analyzing trace with hash 801273457, now seen corresponding path program 2 times [2024-06-14 14:21:18,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:18,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062698682] [2024-06-14 14:21:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:18,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-06-14 14:21:18,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:18,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062698682] [2024-06-14 14:21:18,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062698682] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-14 14:21:18,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192256493] [2024-06-14 14:21:18,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-14 14:21:18,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 14:21:18,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:21:18,593 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) [2024-06-14 14:21:18,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-14 14:21:18,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-14 14:21:18,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-14 14:21:18,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 14 conjunts are in the unsatisfiable core [2024-06-14 14:21:18,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-14 14:21:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-06-14 14:21:18,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-14 14:21:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-06-14 14:21:19,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192256493] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-14 14:21:19,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-14 14:21:19,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 23 [2024-06-14 14:21:19,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376921155] [2024-06-14 14:21:19,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-14 14:21:19,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-06-14 14:21:19,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:19,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-06-14 14:21:19,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2024-06-14 14:21:19,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 14:21:19,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 272 flow. Second operand has 25 states, 25 states have (on average 11.76) internal successors, (294), 25 states have internal predecessors, (294), 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) [2024-06-14 14:21:19,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:19,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 14:21:19,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:20,479 INFO L124 PetriNetUnfolderBase]: 3664/5443 cut-off events. [2024-06-14 14:21:20,479 INFO L125 PetriNetUnfolderBase]: For 3086/3086 co-relation queries the response was YES. [2024-06-14 14:21:20,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14187 conditions, 5443 events. 3664/5443 cut-off events. For 3086/3086 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 26328 event pairs, 430 based on Foata normal form. 421/5043 useless extension candidates. Maximal degree in co-relation 8848. Up to 950 conditions per place. [2024-06-14 14:21:20,505 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 130 selfloop transitions, 26 changer transitions 130/292 dead transitions. [2024-06-14 14:21:20,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 292 transitions, 1586 flow [2024-06-14 14:21:20,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-06-14 14:21:20,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-06-14 14:21:20,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 593 transitions. [2024-06-14 14:21:20,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425089605734767 [2024-06-14 14:21:20,507 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 272 flow. Second operand 31 states and 593 transitions. [2024-06-14 14:21:20,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 292 transitions, 1586 flow [2024-06-14 14:21:20,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 292 transitions, 1474 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:20,521 INFO L231 Difference]: Finished difference. Result has 99 places, 61 transitions, 428 flow [2024-06-14 14:21:20,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=428, PETRI_PLACES=99, PETRI_TRANSITIONS=61} [2024-06-14 14:21:20,522 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2024-06-14 14:21:20,522 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 61 transitions, 428 flow [2024-06-14 14:21:20,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.76) internal successors, (294), 25 states have internal predecessors, (294), 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) [2024-06-14 14:21:20,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:20,523 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:20,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-14 14:21:20,755 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 [2024-06-14 14:21:20,755 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:21:20,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:20,756 INFO L85 PathProgramCache]: Analyzing trace with hash -362293225, now seen corresponding path program 3 times [2024-06-14 14:21:20,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:20,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620030537] [2024-06-14 14:21:20,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:20,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:21,047 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-06-14 14:21:21,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:21,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620030537] [2024-06-14 14:21:21,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620030537] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-14 14:21:21,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202363403] [2024-06-14 14:21:21,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-14 14:21:21,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 14:21:21,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:21:21,069 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-14 14:21:21,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-06-14 14:21:21,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-06-14 14:21:21,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-14 14:21:21,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 14 conjunts are in the unsatisfiable core [2024-06-14 14:21:21,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-14 14:21:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-06-14 14:21:21,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-14 14:21:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-06-14 14:21:21,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202363403] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-14 14:21:21,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-14 14:21:21,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 30 [2024-06-14 14:21:21,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418468696] [2024-06-14 14:21:21,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-14 14:21:21,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-06-14 14:21:21,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:21,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-06-14 14:21:21,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2024-06-14 14:21:21,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 14:21:21,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 61 transitions, 428 flow. Second operand has 31 states, 31 states have (on average 14.516129032258064) internal successors, (450), 31 states have internal predecessors, (450), 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) [2024-06-14 14:21:21,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:21,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 14:21:21,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:23,352 INFO L124 PetriNetUnfolderBase]: 4997/7588 cut-off events. [2024-06-14 14:21:23,353 INFO L125 PetriNetUnfolderBase]: For 14329/14329 co-relation queries the response was YES. [2024-06-14 14:21:23,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23268 conditions, 7588 events. 4997/7588 cut-off events. For 14329/14329 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 39756 event pairs, 2080 based on Foata normal form. 88/6923 useless extension candidates. Maximal degree in co-relation 21657. Up to 3017 conditions per place. [2024-06-14 14:21:23,389 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 38 selfloop transitions, 21 changer transitions 206/273 dead transitions. [2024-06-14 14:21:23,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 273 transitions, 1884 flow [2024-06-14 14:21:23,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-06-14 14:21:23,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-06-14 14:21:23,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 604 transitions. [2024-06-14 14:21:23,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46283524904214557 [2024-06-14 14:21:23,391 INFO L175 Difference]: Start difference. First operand has 99 places, 61 transitions, 428 flow. Second operand 29 states and 604 transitions. [2024-06-14 14:21:23,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 273 transitions, 1884 flow [2024-06-14 14:21:23,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 273 transitions, 1683 flow, removed 54 selfloop flow, removed 15 redundant places. [2024-06-14 14:21:23,455 INFO L231 Difference]: Finished difference. Result has 115 places, 67 transitions, 492 flow [2024-06-14 14:21:23,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=492, PETRI_PLACES=115, PETRI_TRANSITIONS=67} [2024-06-14 14:21:23,457 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 72 predicate places. [2024-06-14 14:21:23,458 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 67 transitions, 492 flow [2024-06-14 14:21:23,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 14.516129032258064) internal successors, (450), 31 states have internal predecessors, (450), 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) [2024-06-14 14:21:23,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:23,458 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:23,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-06-14 14:21:23,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 14:21:23,671 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:21:23,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:23,672 INFO L85 PathProgramCache]: Analyzing trace with hash 44547213, now seen corresponding path program 4 times [2024-06-14 14:21:23,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:23,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564349134] [2024-06-14 14:21:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:23,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:24,166 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-06-14 14:21:24,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:24,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564349134] [2024-06-14 14:21:24,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564349134] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-14 14:21:24,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408099750] [2024-06-14 14:21:24,166 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-14 14:21:24,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 14:21:24,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:21:24,193 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-14 14:21:24,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-06-14 14:21:24,323 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-14 14:21:24,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-14 14:21:24,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 15 conjunts are in the unsatisfiable core [2024-06-14 14:21:24,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-14 14:21:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-06-14 14:21:24,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-14 14:21:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-06-14 14:21:24,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408099750] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-14 14:21:24,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-14 14:21:24,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 30 [2024-06-14 14:21:24,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155264355] [2024-06-14 14:21:24,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-14 14:21:24,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-06-14 14:21:24,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:24,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-06-14 14:21:24,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2024-06-14 14:21:25,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 14:21:25,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 67 transitions, 492 flow. Second operand has 32 states, 32 states have (on average 11.96875) internal successors, (383), 32 states have internal predecessors, (383), 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) [2024-06-14 14:21:25,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:25,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 14:21:25,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:27,780 INFO L124 PetriNetUnfolderBase]: 4705/6951 cut-off events. [2024-06-14 14:21:27,780 INFO L125 PetriNetUnfolderBase]: For 22701/22701 co-relation queries the response was YES. [2024-06-14 14:21:27,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22239 conditions, 6951 events. 4705/6951 cut-off events. For 22701/22701 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 34389 event pairs, 158 based on Foata normal form. 417/6707 useless extension candidates. Maximal degree in co-relation 21698. Up to 1248 conditions per place. [2024-06-14 14:21:27,805 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 0 selfloop transitions, 0 changer transitions 462/462 dead transitions. [2024-06-14 14:21:27,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 462 transitions, 2684 flow [2024-06-14 14:21:27,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-06-14 14:21:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-06-14 14:21:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 888 transitions. [2024-06-14 14:21:27,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43851851851851853 [2024-06-14 14:21:27,810 INFO L175 Difference]: Start difference. First operand has 115 places, 67 transitions, 492 flow. Second operand 45 states and 888 transitions. [2024-06-14 14:21:27,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 462 transitions, 2684 flow [2024-06-14 14:21:27,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 462 transitions, 2358 flow, removed 130 selfloop flow, removed 24 redundant places. [2024-06-14 14:21:27,868 INFO L231 Difference]: Finished difference. Result has 112 places, 0 transitions, 0 flow [2024-06-14 14:21:27,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=68, 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=45, PETRI_FLOW=0, PETRI_PLACES=112, PETRI_TRANSITIONS=0} [2024-06-14 14:21:27,869 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 69 predicate places. [2024-06-14 14:21:27,869 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 0 transitions, 0 flow [2024-06-14 14:21:27,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 11.96875) internal successors, (383), 32 states have internal predecessors, (383), 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) [2024-06-14 14:21:27,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-14 14:21:27,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-14 14:21:27,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-14 14:21:27,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-14 14:21:27,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-14 14:21:27,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-14 14:21:27,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-06-14 14:21:28,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 14:21:28,087 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1] [2024-06-14 14:21:28,090 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 14:21:28,090 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 14:21:28,093 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-14 14:21:28,093 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-14 14:21:28,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 02:21:28 BasicIcfg [2024-06-14 14:21:28,094 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 14:21:28,095 INFO L158 Benchmark]: Toolchain (without parser) took 15452.97ms. Allocated memory was 184.5MB in the beginning and 866.1MB in the end (delta: 681.6MB). Free memory was 111.2MB in the beginning and 667.0MB in the end (delta: -555.8MB). Peak memory consumption was 488.0MB. Max. memory is 16.1GB. [2024-06-14 14:21:28,095 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 184.5MB. Free memory is still 140.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 14:21:28,095 INFO L158 Benchmark]: CDTParser took 0.77ms. Allocated memory is still 184.5MB. Free memory is still 155.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 14:21:28,095 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.38ms. Allocated memory is still 184.5MB. Free memory was 111.0MB in the beginning and 154.2MB in the end (delta: -43.3MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2024-06-14 14:21:28,095 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.78ms. Allocated memory is still 184.5MB. Free memory was 154.2MB in the beginning and 151.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 14:21:28,096 INFO L158 Benchmark]: Boogie Preprocessor took 53.68ms. Allocated memory is still 184.5MB. Free memory was 151.6MB in the beginning and 148.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 14:21:28,096 INFO L158 Benchmark]: RCFGBuilder took 717.71ms. Allocated memory is still 184.5MB. Free memory was 147.6MB in the beginning and 61.7MB in the end (delta: 86.0MB). Peak memory consumption was 86.0MB. Max. memory is 16.1GB. [2024-06-14 14:21:28,096 INFO L158 Benchmark]: TraceAbstraction took 14257.02ms. Allocated memory was 184.5MB in the beginning and 866.1MB in the end (delta: 681.6MB). Free memory was 61.5MB in the beginning and 667.0MB in the end (delta: -605.6MB). Peak memory consumption was 436.7MB. Max. memory is 16.1GB. [2024-06-14 14:21:28,103 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 184.5MB. Free memory is still 140.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.77ms. Allocated memory is still 184.5MB. Free memory is still 155.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.38ms. Allocated memory is still 184.5MB. Free memory was 111.0MB in the beginning and 154.2MB in the end (delta: -43.3MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.78ms. Allocated memory is still 184.5MB. Free memory was 154.2MB in the beginning and 151.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.68ms. Allocated memory is still 184.5MB. Free memory was 151.6MB in the beginning and 148.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 717.71ms. Allocated memory is still 184.5MB. Free memory was 147.6MB in the beginning and 61.7MB in the end (delta: 86.0MB). Peak memory consumption was 86.0MB. Max. memory is 16.1GB. * TraceAbstraction took 14257.02ms. Allocated memory was 184.5MB in the beginning and 866.1MB in the end (delta: 681.6MB). Free memory was 61.5MB in the beginning and 667.0MB in the end (delta: -605.6MB). Peak memory consumption was 436.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 107]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 108]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 109]: 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 7 procedures, 58 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.1s, OverallIterations: 9, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2908 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2836 mSDsluCounter, 328 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 319 mSDsCounter, 362 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7987 IncrementalHoareTripleChecker+Invalid, 8349 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 362 mSolverCounterUnsat, 9 mSDtfsCounter, 7987 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 465 GetRequests, 251 SyntacticMatches, 4 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2440 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=492occurred in iteration=8, InterpolantAutomatonStates: 144, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 379 NumberOfCodeBlocks, 373 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 512 ConstructedInterpolants, 0 QuantifiedInterpolants, 2742 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1734 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 389/559 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 14:21:28,128 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