./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.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/parallel-parallel-sum-1.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/parallel-parallel-sum-1.wvr.c ./goblint.2024-05-07_14-17-48.files/mutex-meet/parallel-parallel-sum-1.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 10:51:19,618 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 10:51:19,694 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 10:51:19,699 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 10:51:19,700 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 10:51:19,731 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 10:51:19,732 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 10:51:19,732 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 10:51:19,733 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 10:51:19,736 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 10:51:19,736 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 10:51:19,737 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 10:51:19,737 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 10:51:19,738 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 10:51:19,738 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 10:51:19,739 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 10:51:19,739 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 10:51:19,739 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 10:51:19,739 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 10:51:19,739 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 10:51:19,740 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 10:51:19,741 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 10:51:19,741 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 10:51:19,741 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 10:51:19,741 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 10:51:19,742 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 10:51:19,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 10:51:19,742 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 10:51:19,742 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 10:51:19,743 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 10:51:19,743 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 10:51:19,744 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 10:51:19,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:51:19,744 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 10:51:19,744 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 10:51:19,744 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 10:51:19,745 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 10:51:19,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 10:51:19,745 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 10:51:19,745 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 10:51:19,745 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 10:51:19,745 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 10:51:19,746 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 10:51:19,746 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 10:51:19,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 10:51:19,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 10:51:19,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 10:51:19,971 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 10:51:19,971 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 10:51:19,972 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2024-05-12 10:51:20,990 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 10:51:21,156 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 10:51:21,156 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2024-05-12 10:51:21,162 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f98ae3f6c/18a63944de3b4e61894d4e8a499fa627/FLAG11d5b4076 [2024-05-12 10:51:21,550 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f98ae3f6c/18a63944de3b4e61894d4e8a499fa627 [2024-05-12 10:51:21,552 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 10:51:21,553 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 10:51:21,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/parallel-parallel-sum-1.wvr.yml/witness.yml [2024-05-12 10:51:21,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 10:51:21,658 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 10:51:21,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 10:51:21,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 10:51:21,662 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 10:51:21,663 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:51:21" (1/2) ... [2024-05-12 10:51:21,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196d3709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:51:21, skipping insertion in model container [2024-05-12 10:51:21,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:51:21" (1/2) ... [2024-05-12 10:51:21,667 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@135cb551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:51:21, skipping insertion in model container [2024-05-12 10:51:21,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:51:21" (2/2) ... [2024-05-12 10:51:21,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196d3709 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:51:21, skipping insertion in model container [2024-05-12 10:51:21,668 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:51:21" (2/2) ... [2024-05-12 10:51:21,668 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 10:51:21,686 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 10:51:21,691 INFO L97 edCorrectnessWitness]: Location invariant before [L130-L130] ! multithreaded || ((4294967296LL + (long long )i2) + (long long )n >= 0LL && (4294967295LL + (long long )i2) - (long long )n >= 0LL) [2024-05-12 10:51:21,692 INFO L97 edCorrectnessWitness]: Location invariant before [L129-L129] ! multithreaded || ((4294967296LL + (long long )i2) + (long long )n >= 0LL && (4294967295LL + (long long )i2) - (long long )n >= 0LL) [2024-05-12 10:51:21,692 INFO L97 edCorrectnessWitness]: Location invariant before [L128-L128] ! multithreaded || ((4294967296LL + (long long )i2) + (long long )n >= 0LL && (4294967295LL + (long long )i2) - (long long )n >= 0LL) [2024-05-12 10:51:21,692 INFO L97 edCorrectnessWitness]: Location invariant before [L127-L127] ! multithreaded || ((4294967296LL + (long long )i2) + (long long )n >= 0LL && (4294967295LL + (long long )i2) - (long long )n >= 0LL) [2024-05-12 10:51:21,692 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 10:51:21,693 INFO L106 edCorrectnessWitness]: ghost_update [L126-L126] multithreaded = 1; [2024-05-12 10:51:21,713 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 10:51:21,911 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/parallel-parallel-sum-1.wvr.c[3642,3655] [2024-05-12 10:51:21,921 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:51:21,929 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 10:51:21,979 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/parallel-parallel-sum-1.wvr.c[3642,3655] [2024-05-12 10:51:21,983 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:51:21,996 INFO L206 MainTranslator]: Completed translation [2024-05-12 10:51:21,996 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:51:21 WrapperNode [2024-05-12 10:51:21,997 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 10:51:21,997 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 10:51:21,998 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 10:51:21,998 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 10:51:22,003 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 10:51:21" (1/1) ... [2024-05-12 10:51:22,020 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 10:51:21" (1/1) ... [2024-05-12 10:51:22,062 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 318 [2024-05-12 10:51:22,063 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 10:51:22,063 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 10:51:22,064 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 10:51:22,064 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 10:51:22,080 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 10:51:21" (1/1) ... [2024-05-12 10:51:22,081 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 10:51:21" (1/1) ... [2024-05-12 10:51:22,094 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 10:51:21" (1/1) ... [2024-05-12 10:51:22,113 INFO L175 MemorySlicer]: Split 15 memory accesses to 6 slices as follows [2, 5, 2, 2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 5 writes are split as follows [0, 1, 1, 1, 1, 1]. [2024-05-12 10:51:22,126 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 10:51:21" (1/1) ... [2024-05-12 10:51:22,126 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 10:51:21" (1/1) ... [2024-05-12 10:51:22,133 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 10:51:21" (1/1) ... [2024-05-12 10:51:22,143 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 10:51:21" (1/1) ... [2024-05-12 10:51:22,146 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 10:51:21" (1/1) ... [2024-05-12 10:51:22,151 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 10:51:21" (1/1) ... [2024-05-12 10:51:22,154 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 10:51:22,155 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 10:51:22,155 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 10:51:22,155 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 10:51:22,156 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 10:51:21" (1/1) ... [2024-05-12 10:51:22,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:51:22,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:51:22,179 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 10:51:22,185 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 10:51:22,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 10:51:22,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 10:51:22,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 10:51:22,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 10:51:22,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 10:51:22,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 10:51:22,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 10:51:22,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-05-12 10:51:22,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 10:51:22,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 10:51:22,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 10:51:22,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 10:51:22,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-05-12 10:51:22,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-05-12 10:51:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-05-12 10:51:22,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-05-12 10:51:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-05-12 10:51:22,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-05-12 10:51:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-05-12 10:51:22,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-05-12 10:51:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-05-12 10:51:22,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-05-12 10:51:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 10:51:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 10:51:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 10:51:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 10:51:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 10:51:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-05-12 10:51:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 10:51:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 10:51:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-05-12 10:51:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 10:51:22,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 10:51:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 10:51:22,216 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 10:51:22,313 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 10:51:22,314 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 10:51:22,654 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 10:51:22,654 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 10:51:22,980 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 10:51:22,981 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-05-12 10:51:22,982 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:51:22 BoogieIcfgContainer [2024-05-12 10:51:22,982 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 10:51:22,984 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 10:51:22,984 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 10:51:22,986 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 10:51:22,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 10:51:21" (1/4) ... [2024-05-12 10:51:22,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760add9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:51:22, skipping insertion in model container [2024-05-12 10:51:22,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:51:21" (2/4) ... [2024-05-12 10:51:22,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760add9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 10:51:22, skipping insertion in model container [2024-05-12 10:51:22,989 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 10:51:21" (3/4) ... [2024-05-12 10:51:22,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760add9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 10:51:22, skipping insertion in model container [2024-05-12 10:51:22,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:51:22" (4/4) ... [2024-05-12 10:51:22,991 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2024-05-12 10:51:23,005 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 10:51:23,006 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 10:51:23,006 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 10:51:23,059 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-05-12 10:51:23,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 63 transitions, 154 flow [2024-05-12 10:51:23,124 INFO L124 PetriNetUnfolderBase]: 9/59 cut-off events. [2024-05-12 10:51:23,125 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-05-12 10:51:23,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 59 events. 9/59 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-05-12 10:51:23,130 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 63 transitions, 154 flow [2024-05-12 10:51:23,141 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 58 transitions, 140 flow [2024-05-12 10:51:23,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 10:51:23,159 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;@1ec79ef6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 10:51:23,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-05-12 10:51:23,192 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 10:51:23,193 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2024-05-12 10:51:23,193 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:51:23,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:51:23,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:51:23,197 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:51:23,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:51:23,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2052386491, now seen corresponding path program 1 times [2024-05-12 10:51:23,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:51:23,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064524978] [2024-05-12 10:51:23,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:23,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:51:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:23,478 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 10:51:23,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:51:23,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064524978] [2024-05-12 10:51:23,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064524978] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:51:23,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:51:23,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 10:51:23,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829528676] [2024-05-12 10:51:23,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:51:23,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:51:23,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:51:23,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:51:23,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:51:23,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 63 [2024-05-12 10:51:23,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 10:51:23,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:51:23,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 63 [2024-05-12 10:51:23,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:51:24,501 INFO L124 PetriNetUnfolderBase]: 9027/11828 cut-off events. [2024-05-12 10:51:24,501 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2024-05-12 10:51:24,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23985 conditions, 11828 events. 9027/11828 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 58800 event pairs, 7096 based on Foata normal form. 1930/11686 useless extension candidates. Maximal degree in co-relation 21464. Up to 11683 conditions per place. [2024-05-12 10:51:24,576 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 44 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2024-05-12 10:51:24,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 50 transitions, 214 flow [2024-05-12 10:51:24,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:51:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:51:24,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-05-12 10:51:24,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-05-12 10:51:24,588 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 140 flow. Second operand 3 states and 80 transitions. [2024-05-12 10:51:24,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 50 transitions, 214 flow [2024-05-12 10:51:24,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 50 transitions, 198 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-05-12 10:51:24,607 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 110 flow [2024-05-12 10:51:24,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2024-05-12 10:51:24,613 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -10 predicate places. [2024-05-12 10:51:24,613 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 110 flow [2024-05-12 10:51:24,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 10:51:24,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:51:24,614 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 10:51:24,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 10:51:24,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:51:24,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:51:24,615 INFO L85 PathProgramCache]: Analyzing trace with hash 852066895, now seen corresponding path program 1 times [2024-05-12 10:51:24,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:51:24,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64508592] [2024-05-12 10:51:24,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:24,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:51:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:24,803 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 10:51:24,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:51:24,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64508592] [2024-05-12 10:51:24,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64508592] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:51:24,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:51:24,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:51:24,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115859352] [2024-05-12 10:51:24,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:51:24,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:51:24,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:51:24,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:51:24,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:51:24,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 63 [2024-05-12 10:51:24,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 10:51:24,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:51:24,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 63 [2024-05-12 10:51:24,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:51:26,284 INFO L124 PetriNetUnfolderBase]: 18052/23972 cut-off events. [2024-05-12 10:51:26,284 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-05-12 10:51:26,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47646 conditions, 23972 events. 18052/23972 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 1050. Compared 135684 event pairs, 7096 based on Foata normal form. 1/19971 useless extension candidates. Maximal degree in co-relation 47640. Up to 13610 conditions per place. [2024-05-12 10:51:26,393 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 77 selfloop transitions, 5 changer transitions 1/88 dead transitions. [2024-05-12 10:51:26,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 88 transitions, 359 flow [2024-05-12 10:51:26,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:51:26,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:51:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-05-12 10:51:26,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2024-05-12 10:51:26,397 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 110 flow. Second operand 3 states and 123 transitions. [2024-05-12 10:51:26,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 88 transitions, 359 flow [2024-05-12 10:51:26,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 88 transitions, 358 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 10:51:26,400 INFO L231 Difference]: Finished difference. Result has 54 places, 54 transitions, 142 flow [2024-05-12 10:51:26,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=54, PETRI_TRANSITIONS=54} [2024-05-12 10:51:26,401 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2024-05-12 10:51:26,402 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 54 transitions, 142 flow [2024-05-12 10:51:26,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 10:51:26,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:51:26,402 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1] [2024-05-12 10:51:26,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 10:51:26,403 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:51:26,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:51:26,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1398479253, now seen corresponding path program 1 times [2024-05-12 10:51:26,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:51:26,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200124860] [2024-05-12 10:51:26,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:26,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:51:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:51:26,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:51:26,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200124860] [2024-05-12 10:51:26,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200124860] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:51:26,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:51:26,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:51:26,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006692275] [2024-05-12 10:51:26,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:51:26,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:51:26,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:51:26,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:51:26,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:51:26,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 63 [2024-05-12 10:51:26,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 54 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 10:51:26,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:51:26,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 63 [2024-05-12 10:51:26,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:51:29,248 INFO L124 PetriNetUnfolderBase]: 28254/37532 cut-off events. [2024-05-12 10:51:29,249 INFO L125 PetriNetUnfolderBase]: For 3739/3739 co-relation queries the response was YES. [2024-05-12 10:51:29,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82739 conditions, 37532 events. 28254/37532 cut-off events. For 3739/3739 co-relation queries the response was YES. Maximal size of possible extension queue 1649. Compared 222306 event pairs, 23939 based on Foata normal form. 1568/32308 useless extension candidates. Maximal degree in co-relation 82732. Up to 23360 conditions per place. [2024-05-12 10:51:29,350 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 48 selfloop transitions, 2 changer transitions 40/95 dead transitions. [2024-05-12 10:51:29,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 95 transitions, 425 flow [2024-05-12 10:51:29,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:51:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:51:29,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-05-12 10:51:29,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5515873015873016 [2024-05-12 10:51:29,360 INFO L175 Difference]: Start difference. First operand has 54 places, 54 transitions, 142 flow. Second operand 4 states and 139 transitions. [2024-05-12 10:51:29,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 95 transitions, 425 flow [2024-05-12 10:51:29,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 95 transitions, 417 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 10:51:29,363 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 155 flow [2024-05-12 10:51:29,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2024-05-12 10:51:29,364 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2024-05-12 10:51:29,364 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 155 flow [2024-05-12 10:51:29,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 10:51:29,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:51:29,365 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1] [2024-05-12 10:51:29,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 10:51:29,365 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:51:29,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:51:29,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1029574680, now seen corresponding path program 1 times [2024-05-12 10:51:29,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:51:29,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580653932] [2024-05-12 10:51:29,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:29,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:51:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:51:29,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:51:29,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580653932] [2024-05-12 10:51:29,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580653932] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:51:29,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330421113] [2024-05-12 10:51:29,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:29,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:51:29,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:51:29,501 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 10:51:29,529 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 10:51:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:29,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 7 conjunts are in the unsatisfiable core [2024-05-12 10:51:29,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:51:29,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:51:29,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:51:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:51:29,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330421113] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 10:51:29,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 10:51:29,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-05-12 10:51:29,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180659752] [2024-05-12 10:51:29,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 10:51:29,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:51:29,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:51:29,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:51:29,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:51:29,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 63 [2024-05-12 10:51:29,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 155 flow. Second operand has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 states have internal predecessors, (179), 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 10:51:29,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:51:29,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 63 [2024-05-12 10:51:29,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:51:31,856 INFO L124 PetriNetUnfolderBase]: 28254/37535 cut-off events. [2024-05-12 10:51:31,856 INFO L125 PetriNetUnfolderBase]: For 7249/7249 co-relation queries the response was YES. [2024-05-12 10:51:31,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82162 conditions, 37535 events. 28254/37535 cut-off events. For 7249/7249 co-relation queries the response was YES. Maximal size of possible extension queue 1687. Compared 223118 event pairs, 23939 based on Foata normal form. 1567/32310 useless extension candidates. Maximal degree in co-relation 82152. Up to 23359 conditions per place. [2024-05-12 10:51:32,017 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 85 selfloop transitions, 5 changer transitions 2/97 dead transitions. [2024-05-12 10:51:32,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 97 transitions, 449 flow [2024-05-12 10:51:32,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:51:32,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:51:32,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-05-12 10:51:32,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2024-05-12 10:51:32,020 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 155 flow. Second operand 6 states and 166 transitions. [2024-05-12 10:51:32,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 97 transitions, 449 flow [2024-05-12 10:51:32,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 97 transitions, 441 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-05-12 10:51:32,028 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 190 flow [2024-05-12 10:51:32,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-05-12 10:51:32,029 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2024-05-12 10:51:32,029 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 190 flow [2024-05-12 10:51:32,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 states have internal predecessors, (179), 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 10:51:32,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:51:32,031 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1] [2024-05-12 10:51:32,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-05-12 10:51:32,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:51:32,246 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:51:32,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:51:32,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1613068396, now seen corresponding path program 1 times [2024-05-12 10:51:32,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:51:32,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303659624] [2024-05-12 10:51:32,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:32,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:51:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:51:32,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:51:32,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303659624] [2024-05-12 10:51:32,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303659624] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:51:32,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744523007] [2024-05-12 10:51:32,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:32,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:51:32,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:51:32,561 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 10:51:32,576 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 10:51:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:32,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjunts are in the unsatisfiable core [2024-05-12 10:51:32,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:51:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 10:51:32,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:51:32,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 10:51:32,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744523007] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 10:51:32,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 10:51:32,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-05-12 10:51:32,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095744727] [2024-05-12 10:51:32,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 10:51:32,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 10:51:32,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:51:32,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 10:51:32,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 10:51:32,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 63 [2024-05-12 10:51:32,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 190 flow. Second operand has 9 states, 9 states have (on average 24.77777777777778) internal successors, (223), 9 states have internal predecessors, (223), 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 10:51:32,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:51:32,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 63 [2024-05-12 10:51:32,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:51:37,288 INFO L124 PetriNetUnfolderBase]: 49486/66040 cut-off events. [2024-05-12 10:51:37,288 INFO L125 PetriNetUnfolderBase]: For 16149/16149 co-relation queries the response was YES. [2024-05-12 10:51:37,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150573 conditions, 66040 events. 49486/66040 cut-off events. For 16149/16149 co-relation queries the response was YES. Maximal size of possible extension queue 2332. Compared 417510 event pairs, 6179 based on Foata normal form. 517/55202 useless extension candidates. Maximal degree in co-relation 150559. Up to 15695 conditions per place. [2024-05-12 10:51:37,602 INFO L140 encePairwiseOnDemand]: 55/63 looper letters, 188 selfloop transitions, 22 changer transitions 50/265 dead transitions. [2024-05-12 10:51:37,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 265 transitions, 1246 flow [2024-05-12 10:51:37,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:51:37,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:51:37,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 394 transitions. [2024-05-12 10:51:37,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5685425685425686 [2024-05-12 10:51:37,605 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 190 flow. Second operand 11 states and 394 transitions. [2024-05-12 10:51:37,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 265 transitions, 1246 flow [2024-05-12 10:51:37,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 265 transitions, 1210 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-05-12 10:51:37,623 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 303 flow [2024-05-12 10:51:37,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=303, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2024-05-12 10:51:37,625 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 13 predicate places. [2024-05-12 10:51:37,625 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 303 flow [2024-05-12 10:51:37,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.77777777777778) internal successors, (223), 9 states have internal predecessors, (223), 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 10:51:37,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:51:37,626 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 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] [2024-05-12 10:51:37,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-05-12 10:51:37,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:51:37,839 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:51:37,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:51:37,839 INFO L85 PathProgramCache]: Analyzing trace with hash 938928183, now seen corresponding path program 2 times [2024-05-12 10:51:37,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:51:37,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930347581] [2024-05-12 10:51:37,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:37,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:51:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-05-12 10:51:37,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:51:37,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930347581] [2024-05-12 10:51:37,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930347581] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:51:37,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:51:37,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:51:37,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794402816] [2024-05-12 10:51:37,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:51:37,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:51:37,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:51:37,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:51:37,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:51:37,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 63 [2024-05-12 10:51:37,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 303 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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 10:51:37,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:51:37,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 63 [2024-05-12 10:51:37,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:51:44,798 INFO L124 PetriNetUnfolderBase]: 73271/97520 cut-off events. [2024-05-12 10:51:44,798 INFO L125 PetriNetUnfolderBase]: For 78344/78344 co-relation queries the response was YES. [2024-05-12 10:51:45,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253158 conditions, 97520 events. 73271/97520 cut-off events. For 78344/78344 co-relation queries the response was YES. Maximal size of possible extension queue 3465. Compared 643385 event pairs, 14794 based on Foata normal form. 2/81498 useless extension candidates. Maximal degree in co-relation 253141. Up to 47434 conditions per place. [2024-05-12 10:51:45,334 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 164 selfloop transitions, 21 changer transitions 2/192 dead transitions. [2024-05-12 10:51:45,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 192 transitions, 1056 flow [2024-05-12 10:51:45,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:51:45,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:51:45,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 221 transitions. [2024-05-12 10:51:45,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7015873015873015 [2024-05-12 10:51:45,336 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 303 flow. Second operand 5 states and 221 transitions. [2024-05-12 10:51:45,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 192 transitions, 1056 flow [2024-05-12 10:51:47,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 192 transitions, 995 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-05-12 10:51:47,083 INFO L231 Difference]: Finished difference. Result has 76 places, 84 transitions, 440 flow [2024-05-12 10:51:47,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=440, PETRI_PLACES=76, PETRI_TRANSITIONS=84} [2024-05-12 10:51:47,084 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 14 predicate places. [2024-05-12 10:51:47,084 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 84 transitions, 440 flow [2024-05-12 10:51:47,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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 10:51:47,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:51:47,085 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, 1, 1, 1] [2024-05-12 10:51:47,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 10:51:47,085 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:51:47,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:51:47,086 INFO L85 PathProgramCache]: Analyzing trace with hash 596414889, now seen corresponding path program 1 times [2024-05-12 10:51:47,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:51:47,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798593347] [2024-05-12 10:51:47,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:47,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:51:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-05-12 10:51:47,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:51:47,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798593347] [2024-05-12 10:51:47,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798593347] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:51:47,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268180186] [2024-05-12 10:51:47,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:47,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:51:47,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:51:47,633 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 10:51:47,634 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 10:51:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:47,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 26 conjunts are in the unsatisfiable core [2024-05-12 10:51:47,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:51:47,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-05-12 10:51:48,055 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 10:51:48,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:51:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-05-12 10:51:48,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268180186] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 10:51:48,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 10:51:48,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 18 [2024-05-12 10:51:48,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228538695] [2024-05-12 10:51:48,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 10:51:48,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-05-12 10:51:48,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:51:48,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-05-12 10:51:48,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-05-12 10:51:48,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 63 [2024-05-12 10:51:48,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 84 transitions, 440 flow. Second operand has 18 states, 18 states have (on average 19.5) internal successors, (351), 18 states have internal predecessors, (351), 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 10:51:48,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:51:48,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 63 [2024-05-12 10:51:48,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand