./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 --validate ./goblint.2024-05-07_14-17-48.files/mutex-meet/popl20-three-array-max.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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.2024-05-07_14-17-48.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 --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 11:03:59,588 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 11:03:59,655 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 11:03:59,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 11:03:59,660 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 11:03:59,687 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 11:03:59,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 11:03:59,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 11:03:59,689 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 11:03:59,692 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 11:03:59,693 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 11:03:59,693 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 11:03:59,694 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 11:03:59,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 11:03:59,695 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 11:03:59,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 11:03:59,695 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 11:03:59,695 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 11:03:59,695 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 11:03:59,695 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 11:03:59,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 11:03:59,696 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 11:03:59,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 11:03:59,696 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 11:03:59,696 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 11:03:59,697 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 11:03:59,697 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 11:03:59,697 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 11:03:59,697 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 11:03:59,698 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 11:03:59,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 11:03:59,698 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 11:03:59,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 11:03:59,699 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 11:03:59,699 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 11:03:59,699 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 11:03:59,699 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 11:03:59,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 11:03:59,699 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 11:03:59,699 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 11:03:59,700 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 11:03:59,700 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 11:03:59,700 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 11:03:59,700 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 11:03:59,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 11:03:59,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 11:03:59,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 11:03:59,873 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 11:03:59,874 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 11:03:59,875 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/popl20-three-array-max.wvr.yml/witness.yml [2024-05-12 11:03:59,985 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 11:03:59,985 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 11:03:59,986 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2024-05-12 11:04:01,028 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 11:04:01,181 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 11:04:01,181 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2024-05-12 11:04:01,187 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e9ece5d7/6c9b95543b56480aa128b6bb3ab6a5ab/FLAG7619ea3bd [2024-05-12 11:04:01,197 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e9ece5d7/6c9b95543b56480aa128b6bb3ab6a5ab [2024-05-12 11:04:01,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 11:04:01,199 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 11:04:01,199 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 11:04:01,200 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 11:04:01,204 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 11:04:01,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:03:59" (1/2) ... [2024-05-12 11:04:01,205 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0f6008 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:04:01, skipping insertion in model container [2024-05-12 11:04:01,205 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:03:59" (1/2) ... [2024-05-12 11:04:01,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d510d54 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:04:01, skipping insertion in model container [2024-05-12 11:04:01,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 11:04:01" (2/2) ... [2024-05-12 11:04:01,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0f6008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:04:01, skipping insertion in model container [2024-05-12 11:04:01,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 11:04:01" (2/2) ... [2024-05-12 11:04:01,207 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 11:04:01,219 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 11:04:01,220 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)) [2024-05-12 11:04:01,220 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)) [2024-05-12 11:04:01,220 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)) [2024-05-12 11:04:01,220 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 11:04:01,220 INFO L106 edCorrectnessWitness]: ghost_update [L106-L106] multithreaded = 1; [2024-05-12 11:04:01,236 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 11:04:01,434 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2823,2836] [2024-05-12 11:04:01,451 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 11:04:01,460 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 11:04:01,512 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2823,2836] [2024-05-12 11:04:01,516 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 11:04:01,529 INFO L206 MainTranslator]: Completed translation [2024-05-12 11:04:01,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:04:01 WrapperNode [2024-05-12 11:04:01,530 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 11:04:01,531 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 11:04:01,531 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 11:04:01,531 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 11:04:01,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:04:01" (1/1) ... [2024-05-12 11:04:01,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:04:01" (1/1) ... [2024-05-12 11:04:01,565 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 245 [2024-05-12 11:04:01,565 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 11:04:01,566 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 11:04:01,566 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 11:04:01,566 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 11:04:01,575 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:04:01" (1/1) ... [2024-05-12 11:04:01,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:04:01" (1/1) ... [2024-05-12 11:04:01,578 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:04:01" (1/1) ... [2024-05-12 11:04:01,602 INFO L175 MemorySlicer]: Split 24 memory accesses to 5 slices as follows [2, 2, 2, 2, 16]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 1, 1, 4]. [2024-05-12 11:04:01,602 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:04:01" (1/1) ... [2024-05-12 11:04:01,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:04:01" (1/1) ... [2024-05-12 11:04:01,610 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:04:01" (1/1) ... [2024-05-12 11:04:01,613 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:04:01" (1/1) ... [2024-05-12 11:04:01,615 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:04:01" (1/1) ... [2024-05-12 11:04:01,616 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:04:01" (1/1) ... [2024-05-12 11:04:01,619 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 11:04:01,619 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 11:04:01,620 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 11:04:01,620 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 11:04:01,620 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:04:01" (1/1) ... [2024-05-12 11:04:01,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 11:04:01,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:04:01,651 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) [2024-05-12 11:04:01,658 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 [2024-05-12 11:04:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 11:04:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 11:04:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 11:04:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 11:04:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 11:04:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 11:04:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 11:04:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 11:04:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 11:04:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 11:04:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 11:04:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-05-12 11:04:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-05-12 11:04:01,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-05-12 11:04:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-05-12 11:04:01,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-05-12 11:04:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-05-12 11:04:01,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-05-12 11:04:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 11:04:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 11:04:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 11:04:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 11:04:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 11:04:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 11:04:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 11:04:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-05-12 11:04:01,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 11:04:01,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 11:04:01,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 11:04:01,691 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 11:04:01,793 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 11:04:01,796 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 11:04:02,121 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 11:04:02,121 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 11:04:02,467 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 11:04:02,467 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-05-12 11:04:02,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 11:04:02 BoogieIcfgContainer [2024-05-12 11:04:02,468 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 11:04:02,470 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 11:04:02,470 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 11:04:02,473 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 11:04:02,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:03:59" (1/4) ... [2024-05-12 11:04:02,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df27241 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 11:04:02, skipping insertion in model container [2024-05-12 11:04:02,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 11:04:01" (2/4) ... [2024-05-12 11:04:02,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df27241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 11:04:02, skipping insertion in model container [2024-05-12 11:04:02,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:04:01" (3/4) ... [2024-05-12 11:04:02,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df27241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 11:04:02, skipping insertion in model container [2024-05-12 11:04:02,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 11:04:02" (4/4) ... [2024-05-12 11:04:02,476 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2024-05-12 11:04:02,491 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 11:04:02,491 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 11:04:02,491 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 11:04:02,535 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-05-12 11:04:02,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 49 transitions, 119 flow [2024-05-12 11:04:02,595 INFO L124 PetriNetUnfolderBase]: 7/46 cut-off events. [2024-05-12 11:04:02,595 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-05-12 11:04:02,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 7/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-05-12 11:04:02,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 49 transitions, 119 flow [2024-05-12 11:04:02,603 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 45 transitions, 108 flow [2024-05-12 11:04:02,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 11:04:02,624 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;@2c646479, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 11:04:02,625 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-05-12 11:04:02,632 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 11:04:02,632 INFO L124 PetriNetUnfolderBase]: 4/13 cut-off events. [2024-05-12 11:04:02,632 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 11:04:02,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:02,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:02,634 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:04:02,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:02,639 INFO L85 PathProgramCache]: Analyzing trace with hash 392094979, now seen corresponding path program 1 times [2024-05-12 11:04:02,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:02,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336707499] [2024-05-12 11:04:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:02,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:03,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:04:03,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:03,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336707499] [2024-05-12 11:04:03,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336707499] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:04:03,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:04:03,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 11:04:03,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802241988] [2024-05-12 11:04:03,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:04:03,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 11:04:03,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:03,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 11:04:03,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 11:04:03,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-05-12 11:04:03,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-05-12 11:04:03,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:03,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-05-12 11:04:03,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:03,331 INFO L124 PetriNetUnfolderBase]: 696/1176 cut-off events. [2024-05-12 11:04:03,332 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-05-12 11:04:03,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2111 conditions, 1176 events. 696/1176 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5535 event pairs, 346 based on Foata normal form. 0/957 useless extension candidates. Maximal degree in co-relation 1756. Up to 877 conditions per place. [2024-05-12 11:04:03,345 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 31 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2024-05-12 11:04:03,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 176 flow [2024-05-12 11:04:03,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 11:04:03,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 11:04:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-05-12 11:04:03,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578231292517006 [2024-05-12 11:04:03,358 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 108 flow. Second operand 3 states and 82 transitions. [2024-05-12 11:04:03,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 176 flow [2024-05-12 11:04:03,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 164 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-05-12 11:04:03,366 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 108 flow [2024-05-12 11:04:03,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2024-05-12 11:04:03,373 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -3 predicate places. [2024-05-12 11:04:03,373 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 108 flow [2024-05-12 11:04:03,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-05-12 11:04:03,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:03,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:03,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 11:04:03,375 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:04:03,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:03,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1821455312, now seen corresponding path program 1 times [2024-05-12 11:04:03,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:03,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130765015] [2024-05-12 11:04:03,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:03,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:03,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:04:03,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:03,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130765015] [2024-05-12 11:04:03,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130765015] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 11:04:03,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656279808] [2024-05-12 11:04:03,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:03,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:04:03,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:04:03,604 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) [2024-05-12 11:04:03,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-05-12 11:04:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:03,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2024-05-12 11:04:03,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:04:03,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 11:04:03,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 11:04:03,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656279808] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:04:03,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-05-12 11:04:03,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-05-12 11:04:03,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532380316] [2024-05-12 11:04:03,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:04:03,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 11:04:03,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:03,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 11:04:03,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 11:04:03,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-05-12 11:04:03,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-05-12 11:04:03,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:03,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-05-12 11:04:03,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:03,974 INFO L124 PetriNetUnfolderBase]: 696/1178 cut-off events. [2024-05-12 11:04:03,975 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-05-12 11:04:03,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2082 conditions, 1178 events. 696/1178 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5580 event pairs, 346 based on Foata normal form. 0/959 useless extension candidates. Maximal degree in co-relation 2071. Up to 876 conditions per place. [2024-05-12 11:04:03,981 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 29 selfloop transitions, 6 changer transitions 0/48 dead transitions. [2024-05-12 11:04:03,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 182 flow [2024-05-12 11:04:03,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 11:04:03,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 11:04:03,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-05-12 11:04:03,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2024-05-12 11:04:03,985 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 108 flow. Second operand 4 states and 101 transitions. [2024-05-12 11:04:03,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 182 flow [2024-05-12 11:04:03,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 178 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-05-12 11:04:03,987 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 132 flow [2024-05-12 11:04:03,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-05-12 11:04:03,988 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2024-05-12 11:04:03,988 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 132 flow [2024-05-12 11:04:03,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-05-12 11:04:03,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:03,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:04,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-05-12 11:04:04,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:04:04,202 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:04:04,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:04,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1806272147, now seen corresponding path program 1 times [2024-05-12 11:04:04,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:04,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216349220] [2024-05-12 11:04:04,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:04,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:04,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-05-12 11:04:04,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:04,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216349220] [2024-05-12 11:04:04,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216349220] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:04:04,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:04:04,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 11:04:04,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683912912] [2024-05-12 11:04:04,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:04:04,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 11:04:04,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:04,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 11:04:04,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 11:04:04,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 11:04:04,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-05-12 11:04:04,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:04,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 11:04:04,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:04,505 INFO L124 PetriNetUnfolderBase]: 969/1499 cut-off events. [2024-05-12 11:04:04,505 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-05-12 11:04:04,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2817 conditions, 1499 events. 969/1499 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7087 event pairs, 190 based on Foata normal form. 0/1190 useless extension candidates. Maximal degree in co-relation 2797. Up to 901 conditions per place. [2024-05-12 11:04:04,513 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 52 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2024-05-12 11:04:04,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 65 transitions, 280 flow [2024-05-12 11:04:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 11:04:04,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 11:04:04,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-05-12 11:04:04,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459183673469388 [2024-05-12 11:04:04,515 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 132 flow. Second operand 4 states and 107 transitions. [2024-05-12 11:04:04,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 65 transitions, 280 flow [2024-05-12 11:04:04,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 11:04:04,516 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 145 flow [2024-05-12 11:04:04,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2024-05-12 11:04:04,517 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2024-05-12 11:04:04,517 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 145 flow [2024-05-12 11:04:04,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-05-12 11:04:04,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:04,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:04,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 11:04:04,518 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:04:04,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:04,519 INFO L85 PathProgramCache]: Analyzing trace with hash 561990041, now seen corresponding path program 1 times [2024-05-12 11:04:04,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:04,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827819644] [2024-05-12 11:04:04,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:04,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:04,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:04:04,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:04,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827819644] [2024-05-12 11:04:04,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827819644] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 11:04:04,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338360836] [2024-05-12 11:04:04,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:04,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:04:04,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:04:04,617 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) [2024-05-12 11:04:04,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-05-12 11:04:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:04,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 7 conjunts are in the unsatisfiable core [2024-05-12 11:04:04,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:04:04,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:04:04,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 11:04:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:04:04,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338360836] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 11:04:04,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 11:04:04,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-05-12 11:04:04,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206693006] [2024-05-12 11:04:04,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 11:04:04,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:04:04,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:04,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:04:04,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:04:04,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-05-12 11:04:04,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 145 flow. Second operand has 12 states, 12 states have (on average 16.25) internal successors, (195), 12 states have internal predecessors, (195), 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) [2024-05-12 11:04:04,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:04,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-05-12 11:04:04,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:05,250 INFO L124 PetriNetUnfolderBase]: 1856/3035 cut-off events. [2024-05-12 11:04:05,250 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-05-12 11:04:05,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5700 conditions, 3035 events. 1856/3035 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 16539 event pairs, 917 based on Foata normal form. 0/2342 useless extension candidates. Maximal degree in co-relation 4292. Up to 1795 conditions per place. [2024-05-12 11:04:05,263 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 68 selfloop transitions, 18 changer transitions 0/96 dead transitions. [2024-05-12 11:04:05,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 96 transitions, 458 flow [2024-05-12 11:04:05,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 11:04:05,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 11:04:05,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-05-12 11:04:05,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051020408163265 [2024-05-12 11:04:05,265 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 145 flow. Second operand 8 states and 198 transitions. [2024-05-12 11:04:05,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 96 transitions, 458 flow [2024-05-12 11:04:05,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 96 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 11:04:05,268 INFO L231 Difference]: Finished difference. Result has 58 places, 60 transitions, 261 flow [2024-05-12 11:04:05,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=261, PETRI_PLACES=58, PETRI_TRANSITIONS=60} [2024-05-12 11:04:05,268 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2024-05-12 11:04:05,269 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 60 transitions, 261 flow [2024-05-12 11:04:05,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.25) internal successors, (195), 12 states have internal predecessors, (195), 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) [2024-05-12 11:04:05,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:05,269 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:05,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-05-12 11:04:05,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-05-12 11:04:05,480 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:04:05,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:05,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1655512273, now seen corresponding path program 2 times [2024-05-12 11:04:05,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:05,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059328511] [2024-05-12 11:04:05,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:05,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-05-12 11:04:05,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:05,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059328511] [2024-05-12 11:04:05,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059328511] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 11:04:05,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792746067] [2024-05-12 11:04:05,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-12 11:04:05,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:04:05,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:04:05,686 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) [2024-05-12 11:04:05,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-05-12 11:04:05,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-05-12 11:04:05,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 11:04:05,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 7 conjunts are in the unsatisfiable core [2024-05-12 11:04:05,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:04:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-05-12 11:04:05,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 11:04:05,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792746067] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:04:05,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-05-12 11:04:05,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-05-12 11:04:05,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835340667] [2024-05-12 11:04:05,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:04:05,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 11:04:05,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:05,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 11:04:05,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:04:05,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 11:04:05,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 60 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2024-05-12 11:04:05,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:05,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 11:04:05,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:06,349 INFO L124 PetriNetUnfolderBase]: 2581/3761 cut-off events. [2024-05-12 11:04:06,349 INFO L125 PetriNetUnfolderBase]: For 361/361 co-relation queries the response was YES. [2024-05-12 11:04:06,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8163 conditions, 3761 events. 2581/3761 cut-off events. For 361/361 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 19169 event pairs, 853 based on Foata normal form. 60/2969 useless extension candidates. Maximal degree in co-relation 6573. Up to 1964 conditions per place. [2024-05-12 11:04:06,369 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 101 selfloop transitions, 9 changer transitions 0/118 dead transitions. [2024-05-12 11:04:06,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 118 transitions, 617 flow [2024-05-12 11:04:06,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 11:04:06,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 11:04:06,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-05-12 11:04:06,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131195335276968 [2024-05-12 11:04:06,371 INFO L175 Difference]: Start difference. First operand has 58 places, 60 transitions, 261 flow. Second operand 7 states and 176 transitions. [2024-05-12 11:04:06,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 118 transitions, 617 flow [2024-05-12 11:04:06,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 118 transitions, 596 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-05-12 11:04:06,375 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 297 flow [2024-05-12 11:04:06,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2024-05-12 11:04:06,376 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2024-05-12 11:04:06,376 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 297 flow [2024-05-12 11:04:06,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2024-05-12 11:04:06,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:06,376 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:06,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-05-12 11:04:06,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:04:06,588 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:04:06,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:06,588 INFO L85 PathProgramCache]: Analyzing trace with hash -254993691, now seen corresponding path program 1 times [2024-05-12 11:04:06,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:06,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988739094] [2024-05-12 11:04:06,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:06,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:06,725 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-05-12 11:04:06,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:06,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988739094] [2024-05-12 11:04:06,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988739094] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 11:04:06,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797816120] [2024-05-12 11:04:06,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:06,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:04:06,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:04:06,741 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) [2024-05-12 11:04:06,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-05-12 11:04:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:06,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 9 conjunts are in the unsatisfiable core [2024-05-12 11:04:06,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:04:06,919 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-05-12 11:04:06,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 11:04:06,985 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-05-12 11:04:06,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797816120] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 11:04:06,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 11:04:06,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-05-12 11:04:06,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431034049] [2024-05-12 11:04:06,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 11:04:06,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-05-12 11:04:06,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:06,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-05-12 11:04:06,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2024-05-12 11:04:07,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-05-12 11:04:07,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 297 flow. Second operand has 17 states, 17 states have (on average 16.235294117647058) internal successors, (276), 17 states have internal predecessors, (276), 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) [2024-05-12 11:04:07,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:07,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-05-12 11:04:07,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:07,950 INFO L124 PetriNetUnfolderBase]: 3618/5754 cut-off events. [2024-05-12 11:04:07,951 INFO L125 PetriNetUnfolderBase]: For 2362/2395 co-relation queries the response was YES. [2024-05-12 11:04:07,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13231 conditions, 5754 events. 3618/5754 cut-off events. For 2362/2395 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 33803 event pairs, 1636 based on Foata normal form. 0/4490 useless extension candidates. Maximal degree in co-relation 7532. Up to 2627 conditions per place. [2024-05-12 11:04:07,985 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 86 selfloop transitions, 40 changer transitions 0/136 dead transitions. [2024-05-12 11:04:07,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 136 transitions, 823 flow [2024-05-12 11:04:07,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:04:07,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:04:07,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2024-05-12 11:04:07,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935064935064935 [2024-05-12 11:04:07,987 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 297 flow. Second operand 11 states and 266 transitions. [2024-05-12 11:04:07,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 136 transitions, 823 flow [2024-05-12 11:04:07,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 136 transitions, 797 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-05-12 11:04:07,997 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 559 flow [2024-05-12 11:04:07,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=559, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2024-05-12 11:04:07,998 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 30 predicate places. [2024-05-12 11:04:07,998 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 559 flow [2024-05-12 11:04:07,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.235294117647058) internal successors, (276), 17 states have internal predecessors, (276), 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) [2024-05-12 11:04:07,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:07,999 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:08,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-05-12 11:04:08,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:04:08,211 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:04:08,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:08,211 INFO L85 PathProgramCache]: Analyzing trace with hash 867018625, now seen corresponding path program 2 times [2024-05-12 11:04:08,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:08,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230219551] [2024-05-12 11:04:08,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:08,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-05-12 11:04:08,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:08,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230219551] [2024-05-12 11:04:08,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230219551] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 11:04:08,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037890040] [2024-05-12 11:04:08,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-12 11:04:08,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:04:08,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:04:08,515 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) [2024-05-12 11:04:08,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-05-12 11:04:08,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-12 11:04:08,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 11:04:08,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 14 conjunts are in the unsatisfiable core [2024-05-12 11:04:08,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:04:08,789 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-05-12 11:04:08,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 11:04:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-05-12 11:04:09,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037890040] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 11:04:09,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 11:04:09,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 23 [2024-05-12 11:04:09,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299052106] [2024-05-12 11:04:09,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 11:04:09,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-05-12 11:04:09,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:09,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-05-12 11:04:09,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2024-05-12 11:04:09,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 11:04:09,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 559 flow. Second operand has 25 states, 25 states have (on average 13.76) internal successors, (344), 25 states have internal predecessors, (344), 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) [2024-05-12 11:04:09,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:09,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 11:04:09,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:11,279 INFO L124 PetriNetUnfolderBase]: 7790/11476 cut-off events. [2024-05-12 11:04:11,279 INFO L125 PetriNetUnfolderBase]: For 7371/7371 co-relation queries the response was YES. [2024-05-12 11:04:11,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28311 conditions, 11476 events. 7790/11476 cut-off events. For 7371/7371 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 67037 event pairs, 941 based on Foata normal form. 502/9723 useless extension candidates. Maximal degree in co-relation 13995. Up to 1498 conditions per place. [2024-05-12 11:04:11,348 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 279 selfloop transitions, 67 changer transitions 14/368 dead transitions. [2024-05-12 11:04:11,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 368 transitions, 2167 flow [2024-05-12 11:04:11,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-05-12 11:04:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-05-12 11:04:11,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 753 transitions. [2024-05-12 11:04:11,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.439067055393586 [2024-05-12 11:04:11,352 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 559 flow. Second operand 35 states and 753 transitions. [2024-05-12 11:04:11,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 368 transitions, 2167 flow [2024-05-12 11:04:11,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 368 transitions, 2125 flow, removed 21 selfloop flow, removed 0 redundant places. [2024-05-12 11:04:11,392 INFO L231 Difference]: Finished difference. Result has 124 places, 109 transitions, 912 flow [2024-05-12 11:04:11,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=912, PETRI_PLACES=124, PETRI_TRANSITIONS=109} [2024-05-12 11:04:11,392 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 76 predicate places. [2024-05-12 11:04:11,393 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 109 transitions, 912 flow [2024-05-12 11:04:11,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 13.76) internal successors, (344), 25 states have internal predecessors, (344), 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) [2024-05-12 11:04:11,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:11,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:11,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-05-12 11:04:11,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:04:11,600 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:04:11,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:11,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1640653563, now seen corresponding path program 1 times [2024-05-12 11:04:11,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:11,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630198906] [2024-05-12 11:04:11,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:11,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:11,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-05-12 11:04:11,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:11,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630198906] [2024-05-12 11:04:11,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630198906] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:04:11,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:04:11,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 11:04:11,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275129463] [2024-05-12 11:04:11,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:04:11,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 11:04:11,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:11,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 11:04:11,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 11:04:11,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-05-12 11:04:11,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 109 transitions, 912 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-05-12 11:04:11,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:11,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-05-12 11:04:11,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:12,730 INFO L124 PetriNetUnfolderBase]: 5262/8863 cut-off events. [2024-05-12 11:04:12,730 INFO L125 PetriNetUnfolderBase]: For 15409/16322 co-relation queries the response was YES. [2024-05-12 11:04:12,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23078 conditions, 8863 events. 5262/8863 cut-off events. For 15409/16322 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 57323 event pairs, 1408 based on Foata normal form. 126/7439 useless extension candidates. Maximal degree in co-relation 21317. Up to 3887 conditions per place. [2024-05-12 11:04:12,794 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 122 selfloop transitions, 2 changer transitions 1/142 dead transitions. [2024-05-12 11:04:12,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 142 transitions, 1386 flow [2024-05-12 11:04:12,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 11:04:12,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 11:04:12,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-05-12 11:04:12,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6462585034013606 [2024-05-12 11:04:12,796 INFO L175 Difference]: Start difference. First operand has 124 places, 109 transitions, 912 flow. Second operand 3 states and 95 transitions. [2024-05-12 11:04:12,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 142 transitions, 1386 flow [2024-05-12 11:04:12,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 142 transitions, 1137 flow, removed 47 selfloop flow, removed 17 redundant places. [2024-05-12 11:04:12,818 INFO L231 Difference]: Finished difference. Result has 110 places, 110 transitions, 716 flow [2024-05-12 11:04:12,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=716, PETRI_PLACES=110, PETRI_TRANSITIONS=110} [2024-05-12 11:04:12,818 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 62 predicate places. [2024-05-12 11:04:12,819 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 110 transitions, 716 flow [2024-05-12 11:04:12,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-05-12 11:04:12,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:12,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:12,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 11:04:12,819 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:04:12,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:12,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1885186488, now seen corresponding path program 1 times [2024-05-12 11:04:12,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:12,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667906541] [2024-05-12 11:04:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:12,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:12,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:04:12,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:12,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667906541] [2024-05-12 11:04:12,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667906541] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 11:04:12,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592925573] [2024-05-12 11:04:12,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:12,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:04:12,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:04:12,923 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) [2024-05-12 11:04:12,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-05-12 11:04:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:13,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 7 conjunts are in the unsatisfiable core [2024-05-12 11:04:13,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:04:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:04:13,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 11:04:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:04:13,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592925573] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 11:04:13,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 11:04:13,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-05-12 11:04:13,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72920661] [2024-05-12 11:04:13,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 11:04:13,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:04:13,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:13,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:04:13,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:04:13,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-05-12 11:04:13,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 110 transitions, 716 flow. Second operand has 12 states, 12 states have (on average 17.416666666666668) internal successors, (209), 12 states have internal predecessors, (209), 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) [2024-05-12 11:04:13,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:13,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-05-12 11:04:13,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:14,454 INFO L124 PetriNetUnfolderBase]: 7345/11273 cut-off events. [2024-05-12 11:04:14,454 INFO L125 PetriNetUnfolderBase]: For 16777/17290 co-relation queries the response was YES. [2024-05-12 11:04:14,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31168 conditions, 11273 events. 7345/11273 cut-off events. For 16777/17290 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 67149 event pairs, 3789 based on Foata normal form. 127/9121 useless extension candidates. Maximal degree in co-relation 28765. Up to 7324 conditions per place. [2024-05-12 11:04:14,520 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 89 selfloop transitions, 23 changer transitions 42/168 dead transitions. [2024-05-12 11:04:14,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 168 transitions, 1262 flow [2024-05-12 11:04:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:04:14,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:04:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-05-12 11:04:14,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-05-12 11:04:14,522 INFO L175 Difference]: Start difference. First operand has 110 places, 110 transitions, 716 flow. Second operand 9 states and 217 transitions. [2024-05-12 11:04:14,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 168 transitions, 1262 flow [2024-05-12 11:04:14,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 168 transitions, 1260 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 11:04:14,565 INFO L231 Difference]: Finished difference. Result has 119 places, 97 transitions, 651 flow [2024-05-12 11:04:14,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=651, PETRI_PLACES=119, PETRI_TRANSITIONS=97} [2024-05-12 11:04:14,565 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 71 predicate places. [2024-05-12 11:04:14,566 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 97 transitions, 651 flow [2024-05-12 11:04:14,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.416666666666668) internal successors, (209), 12 states have internal predecessors, (209), 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) [2024-05-12 11:04:14,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:14,566 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:14,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-05-12 11:04:14,777 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 [2024-05-12 11:04:14,780 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:04:14,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:14,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1794261779, now seen corresponding path program 3 times [2024-05-12 11:04:14,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:14,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891829659] [2024-05-12 11:04:14,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:14,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:15,223 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-05-12 11:04:15,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:15,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891829659] [2024-05-12 11:04:15,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891829659] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 11:04:15,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339396006] [2024-05-12 11:04:15,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-05-12 11:04:15,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:04:15,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:04:15,225 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 11:04:15,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-05-12 11:04:15,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-05-12 11:04:15,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 11:04:15,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 14 conjunts are in the unsatisfiable core [2024-05-12 11:04:15,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:04:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-05-12 11:04:15,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 11:04:15,846 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-05-12 11:04:15,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339396006] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 11:04:15,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 11:04:15,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 30 [2024-05-12 11:04:15,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309326644] [2024-05-12 11:04:15,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 11:04:15,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-05-12 11:04:15,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:15,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-05-12 11:04:15,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2024-05-12 11:04:15,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-05-12 11:04:15,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 97 transitions, 651 flow. Second operand has 31 states, 31 states have (on average 16.516129032258064) internal successors, (512), 31 states have internal predecessors, (512), 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) [2024-05-12 11:04:15,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:15,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-05-12 11:04:15,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:18,245 INFO L124 PetriNetUnfolderBase]: 12612/18577 cut-off events. [2024-05-12 11:04:18,245 INFO L125 PetriNetUnfolderBase]: For 16139/16214 co-relation queries the response was YES. [2024-05-12 11:04:18,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51979 conditions, 18577 events. 12612/18577 cut-off events. For 16139/16214 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 117567 event pairs, 3928 based on Foata normal form. 192/15606 useless extension candidates. Maximal degree in co-relation 49944. Up to 5256 conditions per place. [2024-05-12 11:04:18,385 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 229 selfloop transitions, 100 changer transitions 0/339 dead transitions. [2024-05-12 11:04:18,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 339 transitions, 2430 flow [2024-05-12 11:04:18,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-05-12 11:04:18,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-05-12 11:04:18,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 686 transitions. [2024-05-12 11:04:18,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2024-05-12 11:04:18,388 INFO L175 Difference]: Start difference. First operand has 119 places, 97 transitions, 651 flow. Second operand 29 states and 686 transitions. [2024-05-12 11:04:18,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 339 transitions, 2430 flow [2024-05-12 11:04:18,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 339 transitions, 2210 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-05-12 11:04:18,742 INFO L231 Difference]: Finished difference. Result has 131 places, 161 transitions, 1280 flow [2024-05-12 11:04:18,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1280, PETRI_PLACES=131, PETRI_TRANSITIONS=161} [2024-05-12 11:04:18,743 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 83 predicate places. [2024-05-12 11:04:18,743 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 161 transitions, 1280 flow [2024-05-12 11:04:18,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 16.516129032258064) internal successors, (512), 31 states have internal predecessors, (512), 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) [2024-05-12 11:04:18,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:18,744 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:18,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-05-12 11:04:18,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:04:18,956 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:04:18,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:18,957 INFO L85 PathProgramCache]: Analyzing trace with hash 312184266, now seen corresponding path program 2 times [2024-05-12 11:04:18,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:18,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920362926] [2024-05-12 11:04:18,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:18,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:19,101 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-05-12 11:04:19,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:19,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920362926] [2024-05-12 11:04:19,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920362926] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 11:04:19,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385360035] [2024-05-12 11:04:19,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-12 11:04:19,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:04:19,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:04:19,103 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 11:04:19,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-05-12 11:04:19,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-12 11:04:19,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 11:04:19,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 7 conjunts are in the unsatisfiable core [2024-05-12 11:04:19,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:04:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-05-12 11:04:19,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 11:04:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-05-12 11:04:19,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385360035] provided 1 perfect and 1 imperfect interpolant sequences [2024-05-12 11:04:19,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-05-12 11:04:19,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2024-05-12 11:04:19,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628858600] [2024-05-12 11:04:19,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:04:19,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 11:04:19,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:19,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 11:04:19,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-05-12 11:04:19,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-05-12 11:04:19,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 161 transitions, 1280 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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) [2024-05-12 11:04:19,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:19,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-05-12 11:04:19,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:20,838 INFO L124 PetriNetUnfolderBase]: 9986/15719 cut-off events. [2024-05-12 11:04:20,839 INFO L125 PetriNetUnfolderBase]: For 32289/32778 co-relation queries the response was YES. [2024-05-12 11:04:20,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49629 conditions, 15719 events. 9986/15719 cut-off events. For 32289/32778 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 105684 event pairs, 5902 based on Foata normal form. 228/14467 useless extension candidates. Maximal degree in co-relation 46870. Up to 10866 conditions per place. [2024-05-12 11:04:21,138 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 187 selfloop transitions, 5 changer transitions 0/209 dead transitions. [2024-05-12 11:04:21,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 209 transitions, 2010 flow [2024-05-12 11:04:21,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 11:04:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 11:04:21,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-05-12 11:04:21,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-05-12 11:04:21,149 INFO L175 Difference]: Start difference. First operand has 131 places, 161 transitions, 1280 flow. Second operand 6 states and 141 transitions. [2024-05-12 11:04:21,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 209 transitions, 2010 flow [2024-05-12 11:04:21,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 209 transitions, 1732 flow, removed 101 selfloop flow, removed 5 redundant places. [2024-05-12 11:04:21,287 INFO L231 Difference]: Finished difference. Result has 132 places, 162 transitions, 1030 flow [2024-05-12 11:04:21,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1030, PETRI_PLACES=132, PETRI_TRANSITIONS=162} [2024-05-12 11:04:21,288 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 84 predicate places. [2024-05-12 11:04:21,288 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 162 transitions, 1030 flow [2024-05-12 11:04:21,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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) [2024-05-12 11:04:21,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:21,289 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:21,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-05-12 11:04:21,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-05-12 11:04:21,501 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:04:21,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:21,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1008424200, now seen corresponding path program 1 times [2024-05-12 11:04:21,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:21,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797988832] [2024-05-12 11:04:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:21,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-05-12 11:04:21,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:21,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797988832] [2024-05-12 11:04:21,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797988832] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:04:21,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:04:21,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 11:04:21,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674151089] [2024-05-12 11:04:21,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:04:21,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 11:04:21,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:21,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 11:04:21,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 11:04:21,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-05-12 11:04:21,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 162 transitions, 1030 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-05-12 11:04:21,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:21,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-05-12 11:04:21,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:23,600 INFO L124 PetriNetUnfolderBase]: 12123/18166 cut-off events. [2024-05-12 11:04:23,600 INFO L125 PetriNetUnfolderBase]: For 38456/39703 co-relation queries the response was YES. [2024-05-12 11:04:23,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60541 conditions, 18166 events. 12123/18166 cut-off events. For 38456/39703 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 121328 event pairs, 1307 based on Foata normal form. 46/16602 useless extension candidates. Maximal degree in co-relation 57879. Up to 9555 conditions per place. [2024-05-12 11:04:23,713 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 261 selfloop transitions, 12 changer transitions 0/285 dead transitions. [2024-05-12 11:04:23,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 285 transitions, 2419 flow [2024-05-12 11:04:23,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 11:04:23,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 11:04:23,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-05-12 11:04:23,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2024-05-12 11:04:23,715 INFO L175 Difference]: Start difference. First operand has 132 places, 162 transitions, 1030 flow. Second operand 5 states and 150 transitions. [2024-05-12 11:04:23,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 285 transitions, 2419 flow [2024-05-12 11:04:23,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 285 transitions, 2409 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-05-12 11:04:23,840 INFO L231 Difference]: Finished difference. Result has 134 places, 172 transitions, 1176 flow [2024-05-12 11:04:23,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1176, PETRI_PLACES=134, PETRI_TRANSITIONS=172} [2024-05-12 11:04:23,858 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 86 predicate places. [2024-05-12 11:04:23,858 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 172 transitions, 1176 flow [2024-05-12 11:04:23,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-05-12 11:04:23,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:23,859 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:23,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 11:04:23,859 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:04:23,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:23,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1793968584, now seen corresponding path program 2 times [2024-05-12 11:04:23,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:23,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796296531] [2024-05-12 11:04:23,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:23,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-05-12 11:04:23,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:23,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796296531] [2024-05-12 11:04:23,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796296531] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:04:23,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:04:23,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 11:04:23,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876548771] [2024-05-12 11:04:23,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:04:23,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 11:04:23,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:23,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 11:04:23,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 11:04:23,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 11:04:23,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 172 transitions, 1176 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2024-05-12 11:04:23,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:23,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 11:04:23,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:26,297 INFO L124 PetriNetUnfolderBase]: 14777/23030 cut-off events. [2024-05-12 11:04:26,298 INFO L125 PetriNetUnfolderBase]: For 52870/54362 co-relation queries the response was YES. [2024-05-12 11:04:26,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77026 conditions, 23030 events. 14777/23030 cut-off events. For 52870/54362 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 152746 event pairs, 7905 based on Foata normal form. 1420/21089 useless extension candidates. Maximal degree in co-relation 73756. Up to 14714 conditions per place. [2024-05-12 11:04:26,481 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 172 selfloop transitions, 21 changer transitions 15/219 dead transitions. [2024-05-12 11:04:26,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 219 transitions, 1729 flow [2024-05-12 11:04:26,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 11:04:26,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 11:04:26,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-05-12 11:04:26,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5959183673469388 [2024-05-12 11:04:26,484 INFO L175 Difference]: Start difference. First operand has 134 places, 172 transitions, 1176 flow. Second operand 5 states and 146 transitions. [2024-05-12 11:04:26,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 219 transitions, 1729 flow [2024-05-12 11:04:26,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 219 transitions, 1723 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 11:04:26,803 INFO L231 Difference]: Finished difference. Result has 138 places, 172 transitions, 1220 flow [2024-05-12 11:04:26,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1220, PETRI_PLACES=138, PETRI_TRANSITIONS=172} [2024-05-12 11:04:26,804 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 90 predicate places. [2024-05-12 11:04:26,804 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 172 transitions, 1220 flow [2024-05-12 11:04:26,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2024-05-12 11:04:26,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:26,804 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:26,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 11:04:26,805 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:04:26,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:26,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1374574386, now seen corresponding path program 3 times [2024-05-12 11:04:26,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:26,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574799067] [2024-05-12 11:04:26,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:26,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:26,917 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-05-12 11:04:26,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:26,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574799067] [2024-05-12 11:04:26,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574799067] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 11:04:26,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500766693] [2024-05-12 11:04:26,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-05-12 11:04:26,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:04:26,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:04:26,919 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 11:04:26,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-05-12 11:04:27,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-05-12 11:04:27,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 11:04:27,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 7 conjunts are in the unsatisfiable core [2024-05-12 11:04:27,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:04:27,147 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-05-12 11:04:27,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 11:04:27,195 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-05-12 11:04:27,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500766693] provided 1 perfect and 1 imperfect interpolant sequences [2024-05-12 11:04:27,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-05-12 11:04:27,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-05-12 11:04:27,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179024429] [2024-05-12 11:04:27,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:04:27,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 11:04:27,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:27,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 11:04:27,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:04:27,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-05-12 11:04:27,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 172 transitions, 1220 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-05-12 11:04:27,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:27,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-05-12 11:04:27,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:29,242 INFO L124 PetriNetUnfolderBase]: 12715/18631 cut-off events. [2024-05-12 11:04:29,242 INFO L125 PetriNetUnfolderBase]: For 40088/41402 co-relation queries the response was YES. [2024-05-12 11:04:29,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64028 conditions, 18631 events. 12715/18631 cut-off events. For 40088/41402 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 117533 event pairs, 3923 based on Foata normal form. 1304/17829 useless extension candidates. Maximal degree in co-relation 61815. Up to 10676 conditions per place. [2024-05-12 11:04:29,389 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 139 selfloop transitions, 36 changer transitions 0/185 dead transitions. [2024-05-12 11:04:29,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 185 transitions, 1598 flow [2024-05-12 11:04:29,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 11:04:29,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 11:04:29,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-05-12 11:04:29,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557823129251701 [2024-05-12 11:04:29,390 INFO L175 Difference]: Start difference. First operand has 138 places, 172 transitions, 1220 flow. Second operand 6 states and 134 transitions. [2024-05-12 11:04:29,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 185 transitions, 1598 flow [2024-05-12 11:04:29,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 185 transitions, 1554 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-05-12 11:04:29,632 INFO L231 Difference]: Finished difference. Result has 137 places, 171 transitions, 1235 flow [2024-05-12 11:04:29,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1235, PETRI_PLACES=137, PETRI_TRANSITIONS=171} [2024-05-12 11:04:29,633 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 89 predicate places. [2024-05-12 11:04:29,633 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 171 transitions, 1235 flow [2024-05-12 11:04:29,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-05-12 11:04:29,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:29,633 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:29,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-05-12 11:04:29,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-05-12 11:04:29,845 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:04:29,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:29,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1483665464, now seen corresponding path program 1 times [2024-05-12 11:04:29,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:29,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182052168] [2024-05-12 11:04:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:29,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:04:31,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:31,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182052168] [2024-05-12 11:04:31,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182052168] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 11:04:31,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529766897] [2024-05-12 11:04:31,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:31,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:04:31,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:04:31,825 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 11:04:31,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-05-12 11:04:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:32,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 35 conjunts are in the unsatisfiable core [2024-05-12 11:04:32,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:04:32,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-05-12 11:04:32,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 11:04:32,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 11:04:32,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2024-05-12 11:04:32,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 11:04:32,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:04:32,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:04:32,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 11:04:32,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 11:04:32,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:04:32,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:04:32,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 11:04:32,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:04:32,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 11:04:32,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:04:32,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 11:04:32,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:04:32,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 11:04:32,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 11:04:32,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:04:32,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:04:32,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 11:04:32,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:04:32,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:04:32,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 11:04:32,230 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-05-12 11:04:32,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-05-12 11:04:32,268 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-05-12 11:04:32,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2024-05-12 11:04:32,525 INFO L349 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2024-05-12 11:04:32,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 55 [2024-05-12 11:04:37,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 11:04:37,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 380 treesize of output 1818 [2024-05-12 11:07:15,400 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-05-12 11:07:15,403 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 101 [2024-05-12 11:07:15,404 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-05-12 11:07:15,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-05-12 11:07:15,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-05-12 11:07:15,618 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:287) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:519) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:503) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:609) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:298) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 67 more [2024-05-12 11:07:15,622 INFO L158 Benchmark]: Toolchain (without parser) took 194423.49ms. Allocated memory was 134.2MB in the beginning and 10.9GB in the end (delta: 10.8GB). Free memory was 56.4MB in the beginning and 8.1GB in the end (delta: -8.0GB). Peak memory consumption was 3.8GB. Max. memory is 16.1GB. [2024-05-12 11:07:15,622 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 134.2MB. Free memory was 96.6MB in the beginning and 96.5MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 11:07:15,622 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 103.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 11:07:15,623 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.76ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 56.3MB in the beginning and 133.4MB in the end (delta: -77.2MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2024-05-12 11:07:15,623 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.84ms. Allocated memory is still 169.9MB. Free memory was 133.4MB in the beginning and 130.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-05-12 11:07:15,623 INFO L158 Benchmark]: Boogie Preprocessor took 52.89ms. Allocated memory is still 169.9MB. Free memory was 130.5MB in the beginning and 127.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 11:07:15,623 INFO L158 Benchmark]: RCFGBuilder took 848.31ms. Allocated memory is still 169.9MB. Free memory was 127.2MB in the beginning and 94.3MB in the end (delta: 32.9MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-05-12 11:07:15,624 INFO L158 Benchmark]: TraceAbstraction took 193151.45ms. Allocated memory was 169.9MB in the beginning and 10.9GB in the end (delta: 10.7GB). Free memory was 94.3MB in the beginning and 8.1GB in the end (delta: -8.0GB). Peak memory consumption was 3.8GB. Max. memory is 16.1GB. [2024-05-12 11:07:15,625 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.14ms. Allocated memory is still 134.2MB. Free memory was 96.6MB in the beginning and 96.5MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 103.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 330.76ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 56.3MB in the beginning and 133.4MB in the end (delta: -77.2MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.84ms. Allocated memory is still 169.9MB. Free memory was 133.4MB in the beginning and 130.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.89ms. Allocated memory is still 169.9MB. Free memory was 130.5MB in the beginning and 127.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 848.31ms. Allocated memory is still 169.9MB. Free memory was 127.2MB in the beginning and 94.3MB in the end (delta: 32.9MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 193151.45ms. Allocated memory was 169.9MB in the beginning and 10.9GB in the end (delta: 10.7GB). Free memory was 94.3MB in the beginning and 8.1GB in the end (delta: -8.0GB). Peak memory consumption was 3.8GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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.2024-05-07_14-17-48.files/mutex-meet/popl20-three-array-max.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 11:07:17,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 11:07:17,898 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-05-12 11:07:17,904 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 11:07:17,904 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 11:07:17,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 11:07:17,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 11:07:17,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 11:07:17,930 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 11:07:17,933 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 11:07:17,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 11:07:17,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 11:07:17,934 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 11:07:17,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 11:07:17,935 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 11:07:17,936 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 11:07:17,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 11:07:17,936 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 11:07:17,936 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 11:07:17,937 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 11:07:17,937 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 11:07:17,937 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 11:07:17,937 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 11:07:17,938 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-05-12 11:07:17,938 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-05-12 11:07:17,938 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 11:07:17,938 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-05-12 11:07:17,938 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 11:07:17,939 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 11:07:17,939 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 11:07:17,940 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 11:07:17,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 11:07:17,940 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 11:07:17,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 11:07:17,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 11:07:17,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 11:07:17,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 11:07:17,941 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 11:07:17,942 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-05-12 11:07:17,942 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-05-12 11:07:17,942 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 11:07:17,942 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 11:07:17,942 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 11:07:17,942 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 11:07:17,943 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 11:07:17,943 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-05-12 11:07:17,943 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 11:07:18,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 11:07:18,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 11:07:18,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 11:07:18,216 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 11:07:18,216 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 11:07:18,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2024-05-12 11:07:19,310 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 11:07:19,435 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 11:07:19,435 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2024-05-12 11:07:19,441 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8087bffd8/370375a1eb8b4b0e8492fdb5405afd85/FLAG9f5f323fb [2024-05-12 11:07:19,470 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8087bffd8/370375a1eb8b4b0e8492fdb5405afd85 [2024-05-12 11:07:19,473 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 11:07:19,474 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 11:07:19,475 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/popl20-three-array-max.wvr.yml/witness.yml [2024-05-12 11:07:19,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 11:07:19,620 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 11:07:19,621 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 11:07:19,621 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 11:07:19,624 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 11:07:19,636 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 11:07:19" (1/2) ... [2024-05-12 11:07:19,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a6201e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:07:19, skipping insertion in model container [2024-05-12 11:07:19,637 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 11:07:19" (1/2) ... [2024-05-12 11:07:19,638 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5556d5e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:07:19, skipping insertion in model container [2024-05-12 11:07:19,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:07:19" (2/2) ... [2024-05-12 11:07:19,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a6201e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:07:19, skipping insertion in model container [2024-05-12 11:07:19,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:07:19" (2/2) ... [2024-05-12 11:07:19,639 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 11:07:19,658 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 11:07:19,659 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)) [2024-05-12 11:07:19,659 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)) [2024-05-12 11:07:19,660 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)) [2024-05-12 11:07:19,660 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 11:07:19,660 INFO L106 edCorrectnessWitness]: ghost_update [L106-L106] multithreaded = 1; [2024-05-12 11:07:19,678 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 11:07:19,848 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2823,2836] [2024-05-12 11:07:19,865 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 11:07:19,876 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-05-12 11:07:19,882 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 11:07:19,908 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2823,2836] [2024-05-12 11:07:19,911 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 11:07:19,915 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 11:07:19,971 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2823,2836] [2024-05-12 11:07:19,987 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 11:07:20,002 INFO L206 MainTranslator]: Completed translation [2024-05-12 11:07:20,004 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:07:20 WrapperNode [2024-05-12 11:07:20,004 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 11:07:20,005 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 11:07:20,005 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 11:07:20,005 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 11:07:20,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:07:20" (1/1) ... [2024-05-12 11:07:20,029 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:07:20" (1/1) ... [2024-05-12 11:07:20,056 INFO L138 Inliner]: procedures = 28, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 238 [2024-05-12 11:07:20,056 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 11:07:20,057 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 11:07:20,057 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 11:07:20,057 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 11:07:20,065 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:07:20" (1/1) ... [2024-05-12 11:07:20,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:07:20" (1/1) ... [2024-05-12 11:07:20,080 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:07:20" (1/1) ... [2024-05-12 11:07:20,099 INFO L175 MemorySlicer]: Split 24 memory accesses to 5 slices as follows [2, 2, 2, 2, 16]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 1, 1, 4]. [2024-05-12 11:07:20,099 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:07:20" (1/1) ... [2024-05-12 11:07:20,099 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:07:20" (1/1) ... [2024-05-12 11:07:20,120 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:07:20" (1/1) ... [2024-05-12 11:07:20,123 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:07:20" (1/1) ... [2024-05-12 11:07:20,125 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:07:20" (1/1) ... [2024-05-12 11:07:20,126 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:07:20" (1/1) ... [2024-05-12 11:07:20,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 11:07:20,129 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 11:07:20,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 11:07:20,129 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 11:07:20,130 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:07:20" (1/1) ... [2024-05-12 11:07:20,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 11:07:20,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:07:20,170 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) [2024-05-12 11:07:20,201 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 [2024-05-12 11:07:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 11:07:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-05-12 11:07:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-05-12 11:07:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-05-12 11:07:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-05-12 11:07:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-05-12 11:07:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 11:07:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-05-12 11:07:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-05-12 11:07:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-05-12 11:07:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-05-12 11:07:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-05-12 11:07:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-05-12 11:07:20,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-05-12 11:07:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-05-12 11:07:20,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-05-12 11:07:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-05-12 11:07:20,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-05-12 11:07:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 11:07:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 11:07:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-05-12 11:07:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 11:07:20,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 11:07:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 11:07:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-05-12 11:07:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-05-12 11:07:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-05-12 11:07:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-05-12 11:07:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2024-05-12 11:07:20,236 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 11:07:20,352 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 11:07:20,354 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 11:07:20,867 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 11:07:20,867 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 11:07:21,123 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 11:07:21,123 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-05-12 11:07:21,123 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 11:07:21 BoogieIcfgContainer [2024-05-12 11:07:21,123 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 11:07:21,125 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 11:07:21,125 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 11:07:21,127 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 11:07:21,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 11:07:19" (1/4) ... [2024-05-12 11:07:21,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca3d2a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 11:07:21, skipping insertion in model container [2024-05-12 11:07:21,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:07:19" (2/4) ... [2024-05-12 11:07:21,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca3d2a0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 11:07:21, skipping insertion in model container [2024-05-12 11:07:21,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:07:20" (3/4) ... [2024-05-12 11:07:21,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca3d2a0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 11:07:21, skipping insertion in model container [2024-05-12 11:07:21,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 11:07:21" (4/4) ... [2024-05-12 11:07:21,129 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2024-05-12 11:07:21,143 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 11:07:21,143 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 11:07:21,143 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 11:07:21,182 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-05-12 11:07:21,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 49 transitions, 119 flow [2024-05-12 11:07:21,257 INFO L124 PetriNetUnfolderBase]: 7/46 cut-off events. [2024-05-12 11:07:21,257 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-05-12 11:07:21,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 7/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-05-12 11:07:21,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 49 transitions, 119 flow [2024-05-12 11:07:21,262 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 45 transitions, 108 flow [2024-05-12 11:07:21,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 11:07:21,273 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;@7daa4c9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 11:07:21,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-05-12 11:07:21,278 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 11:07:21,278 INFO L124 PetriNetUnfolderBase]: 4/14 cut-off events. [2024-05-12 11:07:21,279 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 11:07:21,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:07:21,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:07:21,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:07:21,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:07:21,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1342792819, now seen corresponding path program 1 times [2024-05-12 11:07:21,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-05-12 11:07:21,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470174901] [2024-05-12 11:07:21,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:07:21,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:21,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-05-12 11:07:21,296 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-05-12 11:07:21,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-05-12 11:07:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:07:21,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2024-05-12 11:07:21,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:07:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:07:21,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 11:07:21,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-05-12 11:07:21,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470174901] [2024-05-12 11:07:21,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470174901] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:07:21,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:07:21,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 11:07:21,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526763062] [2024-05-12 11:07:21,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:07:21,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 11:07:21,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-05-12 11:07:21,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 11:07:21,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 11:07:21,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 11:07:21,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 108 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) [2024-05-12 11:07:21,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:07:21,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 11:07:21,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:07:21,971 INFO L124 PetriNetUnfolderBase]: 1002/1651 cut-off events. [2024-05-12 11:07:21,972 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-05-12 11:07:21,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3000 conditions, 1651 events. 1002/1651 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8327 event pairs, 250 based on Foata normal form. 0/1323 useless extension candidates. Maximal degree in co-relation 2547. Up to 898 conditions per place. [2024-05-12 11:07:21,983 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 49 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-05-12 11:07:21,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 258 flow [2024-05-12 11:07:21,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 11:07:21,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 11:07:21,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-05-12 11:07:21,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459183673469388 [2024-05-12 11:07:21,995 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 108 flow. Second operand 4 states and 107 transitions. [2024-05-12 11:07:21,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 258 flow [2024-05-12 11:07:21,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 238 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-05-12 11:07:22,000 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 110 flow [2024-05-12 11:07:22,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2024-05-12 11:07:22,005 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -3 predicate places. [2024-05-12 11:07:22,005 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 110 flow [2024-05-12 11:07:22,005 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) [2024-05-12 11:07:22,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:07:22,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:07:22,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-05-12 11:07:22,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:22,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:07:22,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:07:22,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1402930523, now seen corresponding path program 1 times [2024-05-12 11:07:22,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-05-12 11:07:22,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140359383] [2024-05-12 11:07:22,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:07:22,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:22,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-05-12 11:07:22,212 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-05-12 11:07:22,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-05-12 11:07:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:07:22,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2024-05-12 11:07:22,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:07:22,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:07:22,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 11:07:22,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-05-12 11:07:22,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140359383] [2024-05-12 11:07:22,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140359383] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:07:22,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:07:22,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 11:07:22,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400225648] [2024-05-12 11:07:22,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:07:22,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 11:07:22,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-05-12 11:07:22,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 11:07:22,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-05-12 11:07:22,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 11:07:22,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2024-05-12 11:07:22,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:07:22,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 11:07:22,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:07:22,957 INFO L124 PetriNetUnfolderBase]: 1661/2714 cut-off events. [2024-05-12 11:07:22,957 INFO L125 PetriNetUnfolderBase]: For 260/260 co-relation queries the response was YES. [2024-05-12 11:07:22,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5142 conditions, 2714 events. 1661/2714 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14789 event pairs, 444 based on Foata normal form. 45/2273 useless extension candidates. Maximal degree in co-relation 1378. Up to 1266 conditions per place. [2024-05-12 11:07:22,994 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 74 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2024-05-12 11:07:22,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 89 transitions, 368 flow [2024-05-12 11:07:22,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 11:07:22,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 11:07:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-05-12 11:07:22,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-05-12 11:07:22,998 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 110 flow. Second operand 6 states and 156 transitions. [2024-05-12 11:07:22,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 89 transitions, 368 flow [2024-05-12 11:07:22,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 89 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 11:07:23,000 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 147 flow [2024-05-12 11:07:23,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-05-12 11:07:23,001 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2024-05-12 11:07:23,001 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 147 flow [2024-05-12 11:07:23,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2024-05-12 11:07:23,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:07:23,001 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:07:23,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-05-12 11:07:23,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:23,206 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:07:23,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:07:23,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1854206285, now seen corresponding path program 1 times [2024-05-12 11:07:23,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-05-12 11:07:23,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255620605] [2024-05-12 11:07:23,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:07:23,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:23,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-05-12 11:07:23,209 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-05-12 11:07:23,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-05-12 11:07:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:07:23,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2024-05-12 11:07:23,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:07:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:07:23,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 11:07:23,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:07:23,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-05-12 11:07:23,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255620605] [2024-05-12 11:07:23,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255620605] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 11:07:23,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-05-12 11:07:23,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-05-12 11:07:23,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790521047] [2024-05-12 11:07:23,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-05-12 11:07:23,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 11:07:23,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-05-12 11:07:23,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 11:07:23,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 11:07:23,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 11:07:23,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 147 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 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) [2024-05-12 11:07:23,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:07:23,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 11:07:23,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:07:24,780 INFO L124 PetriNetUnfolderBase]: 2941/4527 cut-off events. [2024-05-12 11:07:24,781 INFO L125 PetriNetUnfolderBase]: For 1892/1892 co-relation queries the response was YES. [2024-05-12 11:07:24,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10113 conditions, 4527 events. 2941/4527 cut-off events. For 1892/1892 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 24514 event pairs, 432 based on Foata normal form. 120/3904 useless extension candidates. Maximal degree in co-relation 2173. Up to 1059 conditions per place. [2024-05-12 11:07:24,808 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 139 selfloop transitions, 14 changer transitions 0/162 dead transitions. [2024-05-12 11:07:24,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 162 transitions, 727 flow [2024-05-12 11:07:24,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:07:24,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:07:24,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 297 transitions. [2024-05-12 11:07:24,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-05-12 11:07:24,815 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 147 flow. Second operand 11 states and 297 transitions. [2024-05-12 11:07:24,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 162 transitions, 727 flow [2024-05-12 11:07:24,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 162 transitions, 718 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-05-12 11:07:24,824 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 258 flow [2024-05-12 11:07:24,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=258, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-05-12 11:07:24,825 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 16 predicate places. [2024-05-12 11:07:24,825 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 258 flow [2024-05-12 11:07:24,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 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) [2024-05-12 11:07:24,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:07:24,826 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:07:24,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-05-12 11:07:25,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:25,031 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:07:25,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:07:25,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1848586587, now seen corresponding path program 2 times [2024-05-12 11:07:25,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-05-12 11:07:25,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601593451] [2024-05-12 11:07:25,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-12 11:07:25,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:25,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-05-12 11:07:25,034 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-05-12 11:07:25,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-05-12 11:07:25,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-05-12 11:07:25,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 11:07:25,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2024-05-12 11:07:25,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:07:25,183 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-05-12 11:07:25,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 11:07:25,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-05-12 11:07:25,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601593451] [2024-05-12 11:07:25,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601593451] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:07:25,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:07:25,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 11:07:25,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307194404] [2024-05-12 11:07:25,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:07:25,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 11:07:25,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-05-12 11:07:25,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 11:07:25,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 11:07:25,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-05-12 11:07:25,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2024-05-12 11:07:25,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:07:25,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-05-12 11:07:25,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:07:25,670 INFO L124 PetriNetUnfolderBase]: 2703/4276 cut-off events. [2024-05-12 11:07:25,670 INFO L125 PetriNetUnfolderBase]: For 4646/4702 co-relation queries the response was YES. [2024-05-12 11:07:25,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10793 conditions, 4276 events. 2703/4276 cut-off events. For 4646/4702 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 24182 event pairs, 1638 based on Foata normal form. 44/3619 useless extension candidates. Maximal degree in co-relation 9654. Up to 3508 conditions per place. [2024-05-12 11:07:25,693 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 44 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-05-12 11:07:25,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 58 transitions, 352 flow [2024-05-12 11:07:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 11:07:25,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 11:07:25,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-05-12 11:07:25,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578231292517006 [2024-05-12 11:07:25,695 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 258 flow. Second operand 3 states and 82 transitions. [2024-05-12 11:07:25,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 58 transitions, 352 flow [2024-05-12 11:07:25,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 323 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-05-12 11:07:25,711 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 241 flow [2024-05-12 11:07:25,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-05-12 11:07:25,712 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 15 predicate places. [2024-05-12 11:07:25,712 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 241 flow [2024-05-12 11:07:25,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2024-05-12 11:07:25,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:07:25,713 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:07:25,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-05-12 11:07:25,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:25,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:07:25,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:07:25,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1950009972, now seen corresponding path program 1 times [2024-05-12 11:07:25,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-05-12 11:07:25,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027711937] [2024-05-12 11:07:25,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:07:25,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:25,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-05-12 11:07:25,919 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-05-12 11:07:25,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-05-12 11:07:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:07:26,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2024-05-12 11:07:26,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:07:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 11:07:26,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 11:07:26,420 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 11:07:26,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-05-12 11:07:26,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027711937] [2024-05-12 11:07:26,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027711937] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 11:07:26,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-05-12 11:07:26,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2024-05-12 11:07:26,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978570382] [2024-05-12 11:07:26,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-05-12 11:07:26,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-05-12 11:07:26,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-05-12 11:07:26,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-05-12 11:07:26,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-05-12 11:07:26,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 11:07:26,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 241 flow. Second operand has 15 states, 15 states have (on average 15.066666666666666) internal successors, (226), 15 states have internal predecessors, (226), 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) [2024-05-12 11:07:26,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:07:26,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 11:07:26,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:07:29,160 INFO L124 PetriNetUnfolderBase]: 5370/8171 cut-off events. [2024-05-12 11:07:29,160 INFO L125 PetriNetUnfolderBase]: For 13127/13127 co-relation queries the response was YES. [2024-05-12 11:07:29,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20025 conditions, 8171 events. 5370/8171 cut-off events. For 13127/13127 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 44081 event pairs, 616 based on Foata normal form. 210/7152 useless extension candidates. Maximal degree in co-relation 20004. Up to 1703 conditions per place. [2024-05-12 11:07:29,265 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 218 selfloop transitions, 26 changer transitions 0/253 dead transitions. [2024-05-12 11:07:29,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 253 transitions, 1243 flow [2024-05-12 11:07:29,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-05-12 11:07:29,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-05-12 11:07:29,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 465 transitions. [2024-05-12 11:07:29,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5582232893157263 [2024-05-12 11:07:29,268 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 241 flow. Second operand 17 states and 465 transitions. [2024-05-12 11:07:29,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 253 transitions, 1243 flow [2024-05-12 11:07:29,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 253 transitions, 1239 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-05-12 11:07:29,281 INFO L231 Difference]: Finished difference. Result has 87 places, 72 transitions, 448 flow [2024-05-12 11:07:29,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=448, PETRI_PLACES=87, PETRI_TRANSITIONS=72} [2024-05-12 11:07:29,282 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 39 predicate places. [2024-05-12 11:07:29,282 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 72 transitions, 448 flow [2024-05-12 11:07:29,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.066666666666666) internal successors, (226), 15 states have internal predecessors, (226), 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) [2024-05-12 11:07:29,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:07:29,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:07:29,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-05-12 11:07:29,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:29,490 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:07:29,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:07:29,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1258126216, now seen corresponding path program 1 times [2024-05-12 11:07:29,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-05-12 11:07:29,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476350952] [2024-05-12 11:07:29,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:07:29,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:29,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-05-12 11:07:29,495 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-05-12 11:07:29,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-05-12 11:07:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:07:29,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2024-05-12 11:07:29,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:07:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:07:29,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 11:07:29,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:07:29,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-05-12 11:07:29,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476350952] [2024-05-12 11:07:29,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476350952] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 11:07:29,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-05-12 11:07:29,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-05-12 11:07:29,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957061843] [2024-05-12 11:07:29,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-05-12 11:07:29,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 11:07:29,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-05-12 11:07:29,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 11:07:29,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 11:07:29,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-05-12 11:07:29,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 72 transitions, 448 flow. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 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) [2024-05-12 11:07:29,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:07:29,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-05-12 11:07:29,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:07:31,942 INFO L124 PetriNetUnfolderBase]: 10245/15557 cut-off events. [2024-05-12 11:07:31,942 INFO L125 PetriNetUnfolderBase]: For 33719/33743 co-relation queries the response was YES. [2024-05-12 11:07:31,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44184 conditions, 15557 events. 10245/15557 cut-off events. For 33719/33743 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 95081 event pairs, 6212 based on Foata normal form. 2/13334 useless extension candidates. Maximal degree in co-relation 41390. Up to 6687 conditions per place. [2024-05-12 11:07:32,025 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 110 selfloop transitions, 28 changer transitions 0/150 dead transitions. [2024-05-12 11:07:32,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 150 transitions, 1130 flow [2024-05-12 11:07:32,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 11:07:32,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 11:07:32,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-05-12 11:07:32,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-05-12 11:07:32,028 INFO L175 Difference]: Start difference. First operand has 87 places, 72 transitions, 448 flow. Second operand 8 states and 216 transitions. [2024-05-12 11:07:32,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 150 transitions, 1130 flow [2024-05-12 11:07:32,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 150 transitions, 976 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-05-12 11:07:32,099 INFO L231 Difference]: Finished difference. Result has 87 places, 98 transitions, 525 flow [2024-05-12 11:07:32,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=525, PETRI_PLACES=87, PETRI_TRANSITIONS=98} [2024-05-12 11:07:32,101 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 39 predicate places. [2024-05-12 11:07:32,101 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 98 transitions, 525 flow [2024-05-12 11:07:32,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 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) [2024-05-12 11:07:32,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:07:32,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:07:32,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-05-12 11:07:32,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:32,305 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:07:32,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:07:32,305 INFO L85 PathProgramCache]: Analyzing trace with hash -2036592129, now seen corresponding path program 1 times [2024-05-12 11:07:32,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-05-12 11:07:32,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765494448] [2024-05-12 11:07:32,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:07:32,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:32,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-05-12 11:07:32,310 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-05-12 11:07:32,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-05-12 11:07:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:07:32,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjunts are in the unsatisfiable core [2024-05-12 11:07:32,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:07:32,701 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 11:07:32,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 124 treesize of output 252 [2024-05-12 11:07:33,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-05-12 11:07:33,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 11:07:33,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-05-12 11:07:33,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765494448] [2024-05-12 11:07:33,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765494448] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:07:33,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:07:33,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 11:07:33,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179581451] [2024-05-12 11:07:33,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:07:33,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 11:07:33,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-05-12 11:07:33,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 11:07:33,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 11:07:33,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-05-12 11:07:33,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 98 transitions, 525 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-05-12 11:07:33,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:07:33,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-05-12 11:07:33,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:07:35,353 INFO L124 PetriNetUnfolderBase]: 12301/19014 cut-off events. [2024-05-12 11:07:35,353 INFO L125 PetriNetUnfolderBase]: For 32444/32474 co-relation queries the response was YES. [2024-05-12 11:07:35,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50569 conditions, 19014 events. 12301/19014 cut-off events. For 32444/32474 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 122649 event pairs, 3838 based on Foata normal form. 14/16597 useless extension candidates. Maximal degree in co-relation 47274. Up to 12693 conditions per place. [2024-05-12 11:07:35,457 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 129 selfloop transitions, 3 changer transitions 1/145 dead transitions. [2024-05-12 11:07:35,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 145 transitions, 1023 flow [2024-05-12 11:07:35,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 11:07:35,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 11:07:35,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-05-12 11:07:35,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6870748299319728 [2024-05-12 11:07:35,459 INFO L175 Difference]: Start difference. First operand has 87 places, 98 transitions, 525 flow. Second operand 3 states and 101 transitions. [2024-05-12 11:07:35,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 145 transitions, 1023 flow [2024-05-12 11:07:35,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 145 transitions, 1005 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-05-12 11:07:35,517 INFO L231 Difference]: Finished difference. Result has 89 places, 100 transitions, 526 flow [2024-05-12 11:07:35,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=526, PETRI_PLACES=89, PETRI_TRANSITIONS=100} [2024-05-12 11:07:35,517 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 41 predicate places. [2024-05-12 11:07:35,517 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 100 transitions, 526 flow [2024-05-12 11:07:35,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-05-12 11:07:35,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:07:35,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:07:35,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-05-12 11:07:35,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:35,722 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:07:35,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:07:35,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1229014383, now seen corresponding path program 1 times [2024-05-12 11:07:35,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-05-12 11:07:35,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541656269] [2024-05-12 11:07:35,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:07:35,724 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:35,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-05-12 11:07:35,725 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-05-12 11:07:35,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-05-12 11:07:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:07:35,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2024-05-12 11:07:35,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:07:35,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-05-12 11:07:35,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 11:07:35,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-05-12 11:07:35,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541656269] [2024-05-12 11:07:35,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541656269] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:07:35,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:07:35,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 11:07:35,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076650512] [2024-05-12 11:07:35,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:07:35,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 11:07:35,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-05-12 11:07:35,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 11:07:35,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 11:07:35,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-05-12 11:07:35,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 100 transitions, 526 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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) [2024-05-12 11:07:35,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:07:35,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-05-12 11:07:35,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:07:38,490 INFO L124 PetriNetUnfolderBase]: 13605/21350 cut-off events. [2024-05-12 11:07:38,491 INFO L125 PetriNetUnfolderBase]: For 40364/40398 co-relation queries the response was YES. [2024-05-12 11:07:38,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62088 conditions, 21350 events. 13605/21350 cut-off events. For 40364/40398 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 137117 event pairs, 6754 based on Foata normal form. 36/20741 useless extension candidates. Maximal degree in co-relation 58244. Up to 16712 conditions per place. [2024-05-12 11:07:38,612 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 128 selfloop transitions, 6 changer transitions 0/144 dead transitions. [2024-05-12 11:07:38,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 144 transitions, 916 flow [2024-05-12 11:07:38,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 11:07:38,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 11:07:38,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-05-12 11:07:38,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-05-12 11:07:38,614 INFO L175 Difference]: Start difference. First operand has 89 places, 100 transitions, 526 flow. Second operand 6 states and 161 transitions. [2024-05-12 11:07:38,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 144 transitions, 916 flow [2024-05-12 11:07:38,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 144 transitions, 908 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 11:07:38,670 INFO L231 Difference]: Finished difference. Result has 95 places, 102 transitions, 552 flow [2024-05-12 11:07:38,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=552, PETRI_PLACES=95, PETRI_TRANSITIONS=102} [2024-05-12 11:07:38,671 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 47 predicate places. [2024-05-12 11:07:38,671 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 102 transitions, 552 flow [2024-05-12 11:07:38,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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) [2024-05-12 11:07:38,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:07:38,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:07:38,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-05-12 11:07:38,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:38,876 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:07:38,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:07:38,876 INFO L85 PathProgramCache]: Analyzing trace with hash -124928805, now seen corresponding path program 2 times [2024-05-12 11:07:38,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-05-12 11:07:38,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531591409] [2024-05-12 11:07:38,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-12 11:07:38,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:38,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-05-12 11:07:38,880 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-05-12 11:07:38,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-05-12 11:07:39,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-12 11:07:39,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 11:07:39,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2024-05-12 11:07:39,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:07:39,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-05-12 11:07:39,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 11:07:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-05-12 11:07:39,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-05-12 11:07:39,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531591409] [2024-05-12 11:07:39,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531591409] provided 1 perfect and 1 imperfect interpolant sequences [2024-05-12 11:07:39,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-05-12 11:07:39,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-05-12 11:07:39,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961126582] [2024-05-12 11:07:39,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:07:39,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 11:07:39,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-05-12 11:07:39,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 11:07:39,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-05-12 11:07:39,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 11:07:39,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 102 transitions, 552 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:07:39,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:07:39,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 11:07:39,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:07:44,397 INFO L124 PetriNetUnfolderBase]: 27745/47140 cut-off events. [2024-05-12 11:07:44,397 INFO L125 PetriNetUnfolderBase]: For 90872/91094 co-relation queries the response was YES. [2024-05-12 11:07:44,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131673 conditions, 47140 events. 27745/47140 cut-off events. For 90872/91094 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 370757 event pairs, 7018 based on Foata normal form. 0/43201 useless extension candidates. Maximal degree in co-relation 123305. Up to 8873 conditions per place. [2024-05-12 11:07:44,781 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 284 selfloop transitions, 19 changer transitions 0/312 dead transitions. [2024-05-12 11:07:44,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 312 transitions, 2319 flow [2024-05-12 11:07:44,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 11:07:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 11:07:44,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-05-12 11:07:44,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5830903790087464 [2024-05-12 11:07:44,784 INFO L175 Difference]: Start difference. First operand has 95 places, 102 transitions, 552 flow. Second operand 7 states and 200 transitions. [2024-05-12 11:07:44,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 312 transitions, 2319 flow [2024-05-12 11:07:44,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 312 transitions, 2297 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 11:07:44,952 INFO L231 Difference]: Finished difference. Result has 104 places, 116 transitions, 697 flow [2024-05-12 11:07:44,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=697, PETRI_PLACES=104, PETRI_TRANSITIONS=116} [2024-05-12 11:07:44,953 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 56 predicate places. [2024-05-12 11:07:44,953 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 116 transitions, 697 flow [2024-05-12 11:07:44,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:07:44,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:07:44,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:07:44,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-05-12 11:07:45,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:45,158 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:07:45,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:07:45,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1348132157, now seen corresponding path program 3 times [2024-05-12 11:07:45,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-05-12 11:07:45,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182312933] [2024-05-12 11:07:45,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-05-12 11:07:45,159 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:45,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-05-12 11:07:45,161 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-05-12 11:07:45,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-05-12 11:07:45,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-05-12 11:07:45,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 11:07:45,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2024-05-12 11:07:45,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:07:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-05-12 11:07:45,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 11:07:45,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-05-12 11:07:45,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182312933] [2024-05-12 11:07:45,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182312933] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:07:45,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:07:45,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 11:07:45,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153488992] [2024-05-12 11:07:45,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:07:45,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 11:07:45,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-05-12 11:07:45,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 11:07:45,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 11:07:45,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-05-12 11:07:45,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 116 transitions, 697 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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) [2024-05-12 11:07:45,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:07:45,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-05-12 11:07:45,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:07:51,455 INFO L124 PetriNetUnfolderBase]: 30873/50616 cut-off events. [2024-05-12 11:07:51,455 INFO L125 PetriNetUnfolderBase]: For 180406/182122 co-relation queries the response was YES. [2024-05-12 11:07:51,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185891 conditions, 50616 events. 30873/50616 cut-off events. For 180406/182122 co-relation queries the response was YES. Maximal size of possible extension queue 848. Compared 397874 event pairs, 11550 based on Foata normal form. 528/49377 useless extension candidates. Maximal degree in co-relation 174476. Up to 24316 conditions per place. [2024-05-12 11:07:51,929 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 211 selfloop transitions, 9 changer transitions 15/248 dead transitions. [2024-05-12 11:07:51,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 248 transitions, 2013 flow [2024-05-12 11:07:51,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 11:07:51,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 11:07:51,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-05-12 11:07:51,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-05-12 11:07:51,931 INFO L175 Difference]: Start difference. First operand has 104 places, 116 transitions, 697 flow. Second operand 6 states and 154 transitions. [2024-05-12 11:07:51,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 248 transitions, 2013 flow [2024-05-12 11:07:53,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 248 transitions, 1999 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-05-12 11:07:53,063 INFO L231 Difference]: Finished difference. Result has 112 places, 122 transitions, 778 flow [2024-05-12 11:07:53,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=778, PETRI_PLACES=112, PETRI_TRANSITIONS=122} [2024-05-12 11:07:53,063 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 64 predicate places. [2024-05-12 11:07:53,063 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 122 transitions, 778 flow [2024-05-12 11:07:53,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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) [2024-05-12 11:07:53,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:07:53,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:07:53,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-05-12 11:07:53,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:53,269 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:07:53,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:07:53,269 INFO L85 PathProgramCache]: Analyzing trace with hash 733543263, now seen corresponding path program 4 times [2024-05-12 11:07:53,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-05-12 11:07:53,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709043737] [2024-05-12 11:07:53,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-05-12 11:07:53,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:07:53,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-05-12 11:07:53,271 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-05-12 11:07:53,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-05-12 11:07:53,430 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-05-12 11:07:53,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 11:07:53,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2024-05-12 11:07:53,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:07:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-05-12 11:07:53,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 11:07:53,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-05-12 11:07:53,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709043737] [2024-05-12 11:07:53,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709043737] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:07:53,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:07:53,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 11:07:53,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866050003] [2024-05-12 11:07:53,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:07:53,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 11:07:53,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-05-12 11:07:53,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 11:07:53,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-05-12 11:07:53,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-05-12 11:07:53,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 122 transitions, 778 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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) [2024-05-12 11:07:53,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:07:53,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-05-12 11:07:53,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:07:59,616 INFO L124 PetriNetUnfolderBase]: 29971/46898 cut-off events. [2024-05-12 11:07:59,616 INFO L125 PetriNetUnfolderBase]: For 222846/227426 co-relation queries the response was YES. [2024-05-12 11:07:59,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187664 conditions, 46898 events. 29971/46898 cut-off events. For 222846/227426 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 343540 event pairs, 12910 based on Foata normal form. 2232/47989 useless extension candidates. Maximal degree in co-relation 177173. Up to 33874 conditions per place. [2024-05-12 11:08:00,094 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 157 selfloop transitions, 27 changer transitions 2/200 dead transitions. [2024-05-12 11:08:00,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 200 transitions, 1629 flow [2024-05-12 11:08:00,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 11:08:00,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 11:08:00,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-05-12 11:08:00,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5374149659863946 [2024-05-12 11:08:00,096 INFO L175 Difference]: Start difference. First operand has 112 places, 122 transitions, 778 flow. Second operand 6 states and 158 transitions. [2024-05-12 11:08:00,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 200 transitions, 1629 flow [2024-05-12 11:08:00,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 200 transitions, 1612 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-05-12 11:08:00,810 INFO L231 Difference]: Finished difference. Result has 117 places, 134 transitions, 953 flow [2024-05-12 11:08:00,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=953, PETRI_PLACES=117, PETRI_TRANSITIONS=134} [2024-05-12 11:08:00,813 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 69 predicate places. [2024-05-12 11:08:00,813 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 134 transitions, 953 flow [2024-05-12 11:08:00,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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) [2024-05-12 11:08:00,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:08:00,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:08:00,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-05-12 11:08:01,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:08:01,016 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:08:01,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:08:01,017 INFO L85 PathProgramCache]: Analyzing trace with hash -611658083, now seen corresponding path program 5 times [2024-05-12 11:08:01,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-05-12 11:08:01,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866864155] [2024-05-12 11:08:01,018 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-05-12 11:08:01,018 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:08:01,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-05-12 11:08:01,019 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-05-12 11:08:01,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-05-12 11:08:01,206 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-12 11:08:01,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 11:08:01,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2024-05-12 11:08:01,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:08:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-05-12 11:08:01,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 11:08:01,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-05-12 11:08:01,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866864155] [2024-05-12 11:08:01,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866864155] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:08:01,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:08:01,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 11:08:01,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336537112] [2024-05-12 11:08:01,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:08:01,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 11:08:01,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-05-12 11:08:01,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 11:08:01,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-05-12 11:08:01,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-05-12 11:08:01,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 134 transitions, 953 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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) [2024-05-12 11:08:01,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:08:01,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-05-12 11:08:01,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:08:08,766 INFO L124 PetriNetUnfolderBase]: 36267/56700 cut-off events. [2024-05-12 11:08:08,766 INFO L125 PetriNetUnfolderBase]: For 306212/308712 co-relation queries the response was YES. [2024-05-12 11:08:09,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240638 conditions, 56700 events. 36267/56700 cut-off events. For 306212/308712 co-relation queries the response was YES. Maximal size of possible extension queue 939. Compared 416509 event pairs, 15642 based on Foata normal form. 888/56003 useless extension candidates. Maximal degree in co-relation 227389. Up to 38962 conditions per place. [2024-05-12 11:08:09,391 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 194 selfloop transitions, 43 changer transitions 15/266 dead transitions. [2024-05-12 11:08:09,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 266 transitions, 2399 flow [2024-05-12 11:08:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 11:08:09,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 11:08:09,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-05-12 11:08:09,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-05-12 11:08:09,393 INFO L175 Difference]: Start difference. First operand has 117 places, 134 transitions, 953 flow. Second operand 6 states and 152 transitions. [2024-05-12 11:08:09,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 266 transitions, 2399 flow [2024-05-12 11:08:11,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 266 transitions, 2322 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-05-12 11:08:11,136 INFO L231 Difference]: Finished difference. Result has 122 places, 153 transitions, 1232 flow [2024-05-12 11:08:11,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1232, PETRI_PLACES=122, PETRI_TRANSITIONS=153} [2024-05-12 11:08:11,152 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 74 predicate places. [2024-05-12 11:08:11,152 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 153 transitions, 1232 flow [2024-05-12 11:08:11,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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) [2024-05-12 11:08:11,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:08:11,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:08:11,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2024-05-12 11:08:11,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:08:11,357 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:08:11,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:08:11,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1594864277, now seen corresponding path program 6 times [2024-05-12 11:08:11,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-05-12 11:08:11,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061263836] [2024-05-12 11:08:11,358 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-05-12 11:08:11,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-05-12 11:08:11,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-05-12 11:08:11,359 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-05-12 11:08:11,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-05-12 11:08:11,564 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-05-12 11:08:11,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 11:08:11,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2024-05-12 11:08:11,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:08:11,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-05-12 11:08:11,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 11:08:11,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-05-12 11:08:11,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-05-12 11:08:11,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061263836] [2024-05-12 11:08:11,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061263836] provided 1 perfect and 1 imperfect interpolant sequences [2024-05-12 11:08:11,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-05-12 11:08:11,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-05-12 11:08:11,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583108357] [2024-05-12 11:08:11,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:08:11,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 11:08:11,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-05-12 11:08:11,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 11:08:11,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-05-12 11:08:11,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 11:08:11,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 153 transitions, 1232 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:08:11,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:08:11,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 11:08:11,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand