./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe013_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe013_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:00:31,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:00:31,762 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:00:31,766 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:00:31,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:00:31,797 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:00:31,797 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:00:31,798 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:00:31,798 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:00:31,801 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:00:31,801 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:00:31,802 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:00:31,802 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:00:31,803 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:00:31,804 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:00:31,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:00:31,804 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:00:31,804 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:00:31,804 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:00:31,805 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:00:31,806 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:00:31,806 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:00:31,806 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:00:31,806 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:00:31,807 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:00:31,807 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:00:31,807 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:00:31,807 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:00:31,808 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:00:31,808 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:00:31,809 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:00:31,809 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:00:31,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:00:31,809 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:00:31,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:00:31,810 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:00:31,810 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:00:31,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:00:31,810 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:00:31,810 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:00:31,810 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:00:31,811 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:00:31,811 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:00:31,811 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:00:32,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:00:32,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:00:32,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:00:32,125 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:00:32,126 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:00:32,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe013_tso.yml/witness.yml [2024-06-27 23:00:32,230 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:00:32,231 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:00:32,231 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.i [2024-06-27 23:00:33,362 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:00:33,583 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:00:33,584 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.i [2024-06-27 23:00:33,597 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/710564110/435f98f6311f4d0c83c9e637a6df21e8/FLAG22e88f806 [2024-06-27 23:00:33,607 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/710564110/435f98f6311f4d0c83c9e637a6df21e8 [2024-06-27 23:00:33,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:00:33,611 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:00:33,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:00:33,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:00:33,618 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:00:33,618 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:00:32" (1/2) ... [2024-06-27 23:00:33,619 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2777dad9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:00:33, skipping insertion in model container [2024-06-27 23:00:33,619 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:00:32" (1/2) ... [2024-06-27 23:00:33,621 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@48b54a87 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:00:33, skipping insertion in model container [2024-06-27 23:00:33,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:00:33" (2/2) ... [2024-06-27 23:00:33,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2777dad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:00:33, skipping insertion in model container [2024-06-27 23:00:33,623 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:00:33" (2/2) ... [2024-06-27 23:00:33,623 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:00:33,647 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:00:33,648 INFO L97 edCorrectnessWitness]: Location invariant before [L783-L783] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) [2024-06-27 23:00:33,648 INFO L97 edCorrectnessWitness]: Location invariant before [L786-L786] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) [2024-06-27 23:00:33,648 INFO L97 edCorrectnessWitness]: Location invariant before [L785-L785] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) [2024-06-27 23:00:33,648 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:00:33,648 INFO L106 edCorrectnessWitness]: ghost_update [L781-L781] multithreaded = 1; [2024-06-27 23:00:33,691 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:00:33,984 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:00:33,993 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:00:34,073 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:00:34,107 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:00:34,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:00:34 WrapperNode [2024-06-27 23:00:34,108 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:00:34,110 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:00:34,110 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:00:34,110 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:00:34,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:00:34" (1/1) ... [2024-06-27 23:00:34,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:00:34" (1/1) ... [2024-06-27 23:00:34,149 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2024-06-27 23:00:34,150 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:00:34,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:00:34,151 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:00:34,151 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:00:34,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:00:34" (1/1) ... [2024-06-27 23:00:34,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:00:34" (1/1) ... [2024-06-27 23:00:34,175 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:00:34" (1/1) ... [2024-06-27 23:00:34,199 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 23:00:34,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:00:34" (1/1) ... [2024-06-27 23:00:34,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:00:34" (1/1) ... [2024-06-27 23:00:34,210 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:00:34" (1/1) ... [2024-06-27 23:00:34,217 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:00:34" (1/1) ... [2024-06-27 23:00:34,218 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:00:34" (1/1) ... [2024-06-27 23:00:34,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:00:34" (1/1) ... [2024-06-27 23:00:34,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:00:34,233 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:00:34,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:00:34,234 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:00:34,234 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:00:34" (1/1) ... [2024-06-27 23:00:34,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:00:34,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:00:34,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 23:00:34,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 23:00:34,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:00:34,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:00:34,379 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:00:34,379 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:00:34,379 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:00:34,379 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:00:34,380 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 23:00:34,380 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 23:00:34,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:00:34,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:00:34,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:00:34,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:00:34,381 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:00:34,578 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:00:34,580 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:00:34,824 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:00:34,824 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:00:34,963 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:00:34,967 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:00:34,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:00:34 BoogieIcfgContainer [2024-06-27 23:00:34,971 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:00:34,973 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:00:34,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:00:34,976 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:00:34,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:00:32" (1/4) ... [2024-06-27 23:00:34,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530fde69 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:00:34, skipping insertion in model container [2024-06-27 23:00:34,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:00:33" (2/4) ... [2024-06-27 23:00:34,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530fde69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:00:34, skipping insertion in model container [2024-06-27 23:00:34,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:00:34" (3/4) ... [2024-06-27 23:00:34,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530fde69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:00:34, skipping insertion in model container [2024-06-27 23:00:34,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:00:34" (4/4) ... [2024-06-27 23:00:34,982 INFO L112 eAbstractionObserver]: Analyzing ICFG safe013_tso.i [2024-06-27 23:00:34,996 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:00:34,996 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-27 23:00:34,997 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:00:35,049 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:00:35,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-27 23:00:35,102 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-27 23:00:35,102 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:00:35,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 66 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:00:35,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-27 23:00:35,119 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-27 23:00:35,126 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:00:35,131 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;@a52882b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:00:35,131 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-27 23:00:35,134 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:00:35,134 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:00:35,134 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:00:35,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:35,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:00:35,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:35,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:35,146 INFO L85 PathProgramCache]: Analyzing trace with hash 219069644, now seen corresponding path program 1 times [2024-06-27 23:00:35,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:35,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775220143] [2024-06-27 23:00:35,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:35,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:35,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:35,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775220143] [2024-06-27 23:00:35,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775220143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:35,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:35,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:00:35,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623435339] [2024-06-27 23:00:35,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:35,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:00:35,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:35,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:00:35,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:00:35,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 41 [2024-06-27 23:00:35,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:35,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:35,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 41 [2024-06-27 23:00:35,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:35,576 INFO L124 PetriNetUnfolderBase]: 101/229 cut-off events. [2024-06-27 23:00:35,577 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-27 23:00:35,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 229 events. 101/229 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1200 event pairs, 23 based on Foata normal form. 4/202 useless extension candidates. Maximal degree in co-relation 426. Up to 151 conditions per place. [2024-06-27 23:00:35,582 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 20 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-06-27 23:00:35,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 37 transitions, 130 flow [2024-06-27 23:00:35,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:00:35,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:00:35,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-06-27 23:00:35,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7398373983739838 [2024-06-27 23:00:35,595 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 91 transitions. [2024-06-27 23:00:35,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 37 transitions, 130 flow [2024-06-27 23:00:35,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 126 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 23:00:35,599 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 78 flow [2024-06-27 23:00:35,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-27 23:00:35,604 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2024-06-27 23:00:35,605 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 78 flow [2024-06-27 23:00:35,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:35,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:35,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:35,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:00:35,606 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:35,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:35,607 INFO L85 PathProgramCache]: Analyzing trace with hash 627187612, now seen corresponding path program 1 times [2024-06-27 23:00:35,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:35,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918574894] [2024-06-27 23:00:35,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:35,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:35,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:35,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918574894] [2024-06-27 23:00:35,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918574894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:35,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:35,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:00:35,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421662341] [2024-06-27 23:00:35,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:35,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:00:35,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:35,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:00:35,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:00:35,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 41 [2024-06-27 23:00:35,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:35,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:35,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 41 [2024-06-27 23:00:35,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:35,827 INFO L124 PetriNetUnfolderBase]: 164/358 cut-off events. [2024-06-27 23:00:35,827 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-27 23:00:35,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 358 events. 164/358 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1940 event pairs, 46 based on Foata normal form. 3/338 useless extension candidates. Maximal degree in co-relation 731. Up to 257 conditions per place. [2024-06-27 23:00:35,830 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 29 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2024-06-27 23:00:35,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 189 flow [2024-06-27 23:00:35,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:00:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:00:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-06-27 23:00:35,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7317073170731707 [2024-06-27 23:00:35,832 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 78 flow. Second operand 4 states and 120 transitions. [2024-06-27 23:00:35,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 189 flow [2024-06-27 23:00:35,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 183 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:00:35,834 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 109 flow [2024-06-27 23:00:35,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-06-27 23:00:35,834 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2024-06-27 23:00:35,835 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 109 flow [2024-06-27 23:00:35,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:35,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:35,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:35,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:00:35,836 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:35,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:35,836 INFO L85 PathProgramCache]: Analyzing trace with hash -2032019753, now seen corresponding path program 1 times [2024-06-27 23:00:35,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:35,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287397964] [2024-06-27 23:00:35,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:35,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:35,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:35,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:35,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287397964] [2024-06-27 23:00:35,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287397964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:35,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:35,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:00:35,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066062915] [2024-06-27 23:00:35,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:35,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:00:35,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:35,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:00:35,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:00:35,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-06-27 23:00:35,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 109 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:35,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:35,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-06-27 23:00:35,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:36,017 INFO L124 PetriNetUnfolderBase]: 220/490 cut-off events. [2024-06-27 23:00:36,017 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2024-06-27 23:00:36,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1122 conditions, 490 events. 220/490 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2719 event pairs, 97 based on Foata normal form. 4/469 useless extension candidates. Maximal degree in co-relation 1108. Up to 331 conditions per place. [2024-06-27 23:00:36,021 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 37 selfloop transitions, 9 changer transitions 0/59 dead transitions. [2024-06-27 23:00:36,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 59 transitions, 273 flow [2024-06-27 23:00:36,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:00:36,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:00:36,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2024-06-27 23:00:36,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7024390243902439 [2024-06-27 23:00:36,023 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 109 flow. Second operand 5 states and 144 transitions. [2024-06-27 23:00:36,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 59 transitions, 273 flow [2024-06-27 23:00:36,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 59 transitions, 273 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 23:00:36,026 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 186 flow [2024-06-27 23:00:36,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2024-06-27 23:00:36,026 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-06-27 23:00:36,027 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 186 flow [2024-06-27 23:00:36,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:36,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:36,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:36,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:00:36,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:36,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:36,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1804174214, now seen corresponding path program 1 times [2024-06-27 23:00:36,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:36,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696095839] [2024-06-27 23:00:36,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:36,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:36,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:36,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:36,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696095839] [2024-06-27 23:00:36,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696095839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:36,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:36,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:00:36,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137074088] [2024-06-27 23:00:36,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:36,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:00:36,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:36,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:00:36,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:00:36,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 41 [2024-06-27 23:00:36,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 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) [2024-06-27 23:00:36,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:36,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 41 [2024-06-27 23:00:36,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:36,197 INFO L124 PetriNetUnfolderBase]: 220/472 cut-off events. [2024-06-27 23:00:36,197 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2024-06-27 23:00:36,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 472 events. 220/472 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2646 event pairs, 49 based on Foata normal form. 8/445 useless extension candidates. Maximal degree in co-relation 1230. Up to 254 conditions per place. [2024-06-27 23:00:36,201 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 30 selfloop transitions, 9 changer transitions 0/56 dead transitions. [2024-06-27 23:00:36,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 56 transitions, 296 flow [2024-06-27 23:00:36,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:00:36,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:00:36,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-06-27 23:00:36,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7195121951219512 [2024-06-27 23:00:36,202 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 186 flow. Second operand 4 states and 118 transitions. [2024-06-27 23:00:36,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 56 transitions, 296 flow [2024-06-27 23:00:36,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 294 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 23:00:36,205 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 220 flow [2024-06-27 23:00:36,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-06-27 23:00:36,206 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2024-06-27 23:00:36,206 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 220 flow [2024-06-27 23:00:36,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 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) [2024-06-27 23:00:36,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:36,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:36,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:00:36,207 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:36,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:36,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1655768282, now seen corresponding path program 2 times [2024-06-27 23:00:36,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:36,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412640489] [2024-06-27 23:00:36,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:36,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:36,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:36,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:36,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412640489] [2024-06-27 23:00:36,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412640489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:36,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:36,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:00:36,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608742954] [2024-06-27 23:00:36,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:36,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:00:36,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:36,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:00:36,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:00:36,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 41 [2024-06-27 23:00:36,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 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) [2024-06-27 23:00:36,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:36,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 41 [2024-06-27 23:00:36,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:36,391 INFO L124 PetriNetUnfolderBase]: 209/455 cut-off events. [2024-06-27 23:00:36,391 INFO L125 PetriNetUnfolderBase]: For 598/598 co-relation queries the response was YES. [2024-06-27 23:00:36,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1311 conditions, 455 events. 209/455 cut-off events. For 598/598 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2552 event pairs, 44 based on Foata normal form. 6/430 useless extension candidates. Maximal degree in co-relation 1289. Up to 207 conditions per place. [2024-06-27 23:00:36,395 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 35 selfloop transitions, 10 changer transitions 0/62 dead transitions. [2024-06-27 23:00:36,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 352 flow [2024-06-27 23:00:36,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:00:36,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:00:36,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-06-27 23:00:36,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7073170731707317 [2024-06-27 23:00:36,397 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 220 flow. Second operand 5 states and 145 transitions. [2024-06-27 23:00:36,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 352 flow [2024-06-27 23:00:36,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 62 transitions, 336 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 23:00:36,404 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 231 flow [2024-06-27 23:00:36,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-06-27 23:00:36,405 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2024-06-27 23:00:36,405 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 231 flow [2024-06-27 23:00:36,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 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) [2024-06-27 23:00:36,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:36,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:36,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:00:36,406 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:36,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:36,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1860072281, now seen corresponding path program 1 times [2024-06-27 23:00:36,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:36,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121553542] [2024-06-27 23:00:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:36,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:36,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:36,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:36,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121553542] [2024-06-27 23:00:36,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121553542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:36,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:36,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:00:36,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651873568] [2024-06-27 23:00:36,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:36,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:36,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:36,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:36,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:36,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-06-27 23:00:36,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 231 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:36,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:36,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-06-27 23:00:36,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:36,583 INFO L124 PetriNetUnfolderBase]: 257/589 cut-off events. [2024-06-27 23:00:36,584 INFO L125 PetriNetUnfolderBase]: For 764/764 co-relation queries the response was YES. [2024-06-27 23:00:36,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1637 conditions, 589 events. 257/589 cut-off events. For 764/764 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3557 event pairs, 28 based on Foata normal form. 8/577 useless extension candidates. Maximal degree in co-relation 1614. Up to 299 conditions per place. [2024-06-27 23:00:36,587 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 39 selfloop transitions, 13 changer transitions 0/65 dead transitions. [2024-06-27 23:00:36,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 402 flow [2024-06-27 23:00:36,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:00:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:00:36,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2024-06-27 23:00:36,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7024390243902439 [2024-06-27 23:00:36,588 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 231 flow. Second operand 5 states and 144 transitions. [2024-06-27 23:00:36,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 402 flow [2024-06-27 23:00:36,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 370 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 23:00:36,590 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 281 flow [2024-06-27 23:00:36,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-06-27 23:00:36,591 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2024-06-27 23:00:36,591 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 281 flow [2024-06-27 23:00:36,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:36,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:36,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:36,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:00:36,592 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:36,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:36,593 INFO L85 PathProgramCache]: Analyzing trace with hash 45917845, now seen corresponding path program 2 times [2024-06-27 23:00:36,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:36,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498609342] [2024-06-27 23:00:36,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:36,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:36,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:36,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:36,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498609342] [2024-06-27 23:00:36,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498609342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:36,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:36,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:00:36,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142666337] [2024-06-27 23:00:36,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:36,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:36,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:36,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:36,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:36,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-06-27 23:00:36,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:36,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:36,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-06-27 23:00:36,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:36,791 INFO L124 PetriNetUnfolderBase]: 281/653 cut-off events. [2024-06-27 23:00:36,792 INFO L125 PetriNetUnfolderBase]: For 875/875 co-relation queries the response was YES. [2024-06-27 23:00:36,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1845 conditions, 653 events. 281/653 cut-off events. For 875/875 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4073 event pairs, 24 based on Foata normal form. 8/641 useless extension candidates. Maximal degree in co-relation 1819. Up to 217 conditions per place. [2024-06-27 23:00:36,796 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 43 selfloop transitions, 16 changer transitions 0/72 dead transitions. [2024-06-27 23:00:36,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 72 transitions, 470 flow [2024-06-27 23:00:36,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:36,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:36,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-06-27 23:00:36,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2024-06-27 23:00:36,797 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 281 flow. Second operand 6 states and 168 transitions. [2024-06-27 23:00:36,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 72 transitions, 470 flow [2024-06-27 23:00:36,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 72 transitions, 464 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-27 23:00:36,800 INFO L231 Difference]: Finished difference. Result has 68 places, 52 transitions, 338 flow [2024-06-27 23:00:36,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=68, PETRI_TRANSITIONS=52} [2024-06-27 23:00:36,801 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-06-27 23:00:36,801 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 52 transitions, 338 flow [2024-06-27 23:00:36,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:36,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:36,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:36,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:00:36,802 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:36,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:36,802 INFO L85 PathProgramCache]: Analyzing trace with hash 98545611, now seen corresponding path program 3 times [2024-06-27 23:00:36,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:36,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527577877] [2024-06-27 23:00:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:36,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:36,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:36,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527577877] [2024-06-27 23:00:36,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527577877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:36,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:36,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:00:36,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189339232] [2024-06-27 23:00:36,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:36,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:36,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:36,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:36,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:36,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-06-27 23:00:36,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 52 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:36,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:36,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-06-27 23:00:36,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:36,947 INFO L124 PetriNetUnfolderBase]: 269/623 cut-off events. [2024-06-27 23:00:36,947 INFO L125 PetriNetUnfolderBase]: For 1177/1177 co-relation queries the response was YES. [2024-06-27 23:00:36,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1888 conditions, 623 events. 269/623 cut-off events. For 1177/1177 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3796 event pairs, 25 based on Foata normal form. 8/615 useless extension candidates. Maximal degree in co-relation 1858. Up to 213 conditions per place. [2024-06-27 23:00:36,951 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 43 selfloop transitions, 15 changer transitions 0/71 dead transitions. [2024-06-27 23:00:36,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 71 transitions, 486 flow [2024-06-27 23:00:36,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:36,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:36,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-06-27 23:00:36,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6788617886178862 [2024-06-27 23:00:36,953 INFO L175 Difference]: Start difference. First operand has 68 places, 52 transitions, 338 flow. Second operand 6 states and 167 transitions. [2024-06-27 23:00:36,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 71 transitions, 486 flow [2024-06-27 23:00:36,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 469 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:00:36,956 INFO L231 Difference]: Finished difference. Result has 71 places, 51 transitions, 341 flow [2024-06-27 23:00:36,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=341, PETRI_PLACES=71, PETRI_TRANSITIONS=51} [2024-06-27 23:00:36,957 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2024-06-27 23:00:36,957 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 51 transitions, 341 flow [2024-06-27 23:00:36,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:36,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:36,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:36,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:00:36,958 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:36,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:36,958 INFO L85 PathProgramCache]: Analyzing trace with hash 397292103, now seen corresponding path program 1 times [2024-06-27 23:00:36,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:36,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847965339] [2024-06-27 23:00:36,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:36,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:37,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:37,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:37,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847965339] [2024-06-27 23:00:37,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847965339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:37,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:37,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:00:37,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696270235] [2024-06-27 23:00:37,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:37,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:37,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:37,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:37,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:37,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-06-27 23:00:37,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 51 transitions, 341 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:37,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:37,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-06-27 23:00:37,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:37,131 INFO L124 PetriNetUnfolderBase]: 281/664 cut-off events. [2024-06-27 23:00:37,131 INFO L125 PetriNetUnfolderBase]: For 1307/1307 co-relation queries the response was YES. [2024-06-27 23:00:37,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 664 events. 281/664 cut-off events. For 1307/1307 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4087 event pairs, 73 based on Foata normal form. 4/643 useless extension candidates. Maximal degree in co-relation 1987. Up to 386 conditions per place. [2024-06-27 23:00:37,136 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 49 selfloop transitions, 13 changer transitions 0/75 dead transitions. [2024-06-27 23:00:37,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 539 flow [2024-06-27 23:00:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:37,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:37,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-27 23:00:37,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6869918699186992 [2024-06-27 23:00:37,137 INFO L175 Difference]: Start difference. First operand has 71 places, 51 transitions, 341 flow. Second operand 6 states and 169 transitions. [2024-06-27 23:00:37,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 539 flow [2024-06-27 23:00:37,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 75 transitions, 496 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:00:37,141 INFO L231 Difference]: Finished difference. Result has 72 places, 52 transitions, 334 flow [2024-06-27 23:00:37,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=72, PETRI_TRANSITIONS=52} [2024-06-27 23:00:37,142 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2024-06-27 23:00:37,142 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 52 transitions, 334 flow [2024-06-27 23:00:37,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:37,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:37,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:37,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:00:37,143 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:37,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:37,144 INFO L85 PathProgramCache]: Analyzing trace with hash 397412073, now seen corresponding path program 2 times [2024-06-27 23:00:37,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:37,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781264156] [2024-06-27 23:00:37,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:37,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:37,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:37,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781264156] [2024-06-27 23:00:37,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781264156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:37,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:37,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:00:37,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780620012] [2024-06-27 23:00:37,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:37,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:37,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:37,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:37,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:37,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-06-27 23:00:37,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 52 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:37,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:37,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-06-27 23:00:37,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:37,330 INFO L124 PetriNetUnfolderBase]: 301/704 cut-off events. [2024-06-27 23:00:37,330 INFO L125 PetriNetUnfolderBase]: For 1462/1462 co-relation queries the response was YES. [2024-06-27 23:00:37,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 704 events. 301/704 cut-off events. For 1462/1462 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4397 event pairs, 85 based on Foata normal form. 4/680 useless extension candidates. Maximal degree in co-relation 2085. Up to 456 conditions per place. [2024-06-27 23:00:37,335 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 47 selfloop transitions, 13 changer transitions 0/73 dead transitions. [2024-06-27 23:00:37,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 527 flow [2024-06-27 23:00:37,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:37,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:37,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-06-27 23:00:37,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2024-06-27 23:00:37,336 INFO L175 Difference]: Start difference. First operand has 72 places, 52 transitions, 334 flow. Second operand 6 states and 165 transitions. [2024-06-27 23:00:37,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 527 flow [2024-06-27 23:00:37,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 73 transitions, 487 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 23:00:37,340 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 357 flow [2024-06-27 23:00:37,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=357, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2024-06-27 23:00:37,341 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2024-06-27 23:00:37,341 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 357 flow [2024-06-27 23:00:37,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:37,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:37,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:37,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:00:37,342 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:37,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:37,342 INFO L85 PathProgramCache]: Analyzing trace with hash 245960603, now seen corresponding path program 3 times [2024-06-27 23:00:37,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:37,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522608758] [2024-06-27 23:00:37,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:37,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:37,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:37,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522608758] [2024-06-27 23:00:37,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522608758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:37,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:37,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:00:37,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973159982] [2024-06-27 23:00:37,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:37,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:37,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:37,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:37,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:37,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-06-27 23:00:37,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:37,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:37,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-06-27 23:00:37,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:37,508 INFO L124 PetriNetUnfolderBase]: 293/696 cut-off events. [2024-06-27 23:00:37,509 INFO L125 PetriNetUnfolderBase]: For 1390/1390 co-relation queries the response was YES. [2024-06-27 23:00:37,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1995 conditions, 696 events. 293/696 cut-off events. For 1390/1390 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4332 event pairs, 67 based on Foata normal form. 4/676 useless extension candidates. Maximal degree in co-relation 1964. Up to 410 conditions per place. [2024-06-27 23:00:37,514 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 46 selfloop transitions, 15 changer transitions 0/74 dead transitions. [2024-06-27 23:00:37,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 74 transitions, 525 flow [2024-06-27 23:00:37,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:00:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:00:37,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-06-27 23:00:37,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7073170731707317 [2024-06-27 23:00:37,515 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 357 flow. Second operand 5 states and 145 transitions. [2024-06-27 23:00:37,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 74 transitions, 525 flow [2024-06-27 23:00:37,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 497 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 23:00:37,519 INFO L231 Difference]: Finished difference. Result has 76 places, 55 transitions, 368 flow [2024-06-27 23:00:37,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=368, PETRI_PLACES=76, PETRI_TRANSITIONS=55} [2024-06-27 23:00:37,520 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2024-06-27 23:00:37,520 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 55 transitions, 368 flow [2024-06-27 23:00:37,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:37,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:37,520 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] [2024-06-27 23:00:37,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:00:37,521 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:37,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:37,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1188954363, now seen corresponding path program 1 times [2024-06-27 23:00:37,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:37,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297466240] [2024-06-27 23:00:37,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:37,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:37,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:37,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297466240] [2024-06-27 23:00:37,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297466240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:37,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:37,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:37,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834545854] [2024-06-27 23:00:37,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:37,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:37,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:37,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:37,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:37,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-06-27 23:00:37,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 55 transitions, 368 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:37,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:37,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-06-27 23:00:37,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:37,717 INFO L124 PetriNetUnfolderBase]: 337/804 cut-off events. [2024-06-27 23:00:37,717 INFO L125 PetriNetUnfolderBase]: For 2160/2160 co-relation queries the response was YES. [2024-06-27 23:00:37,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2316 conditions, 804 events. 337/804 cut-off events. For 2160/2160 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5343 event pairs, 58 based on Foata normal form. 8/783 useless extension candidates. Maximal degree in co-relation 2284. Up to 235 conditions per place. [2024-06-27 23:00:37,722 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 46 selfloop transitions, 17 changer transitions 3/79 dead transitions. [2024-06-27 23:00:37,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 79 transitions, 574 flow [2024-06-27 23:00:37,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:37,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:37,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-27 23:00:37,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6869918699186992 [2024-06-27 23:00:37,724 INFO L175 Difference]: Start difference. First operand has 76 places, 55 transitions, 368 flow. Second operand 6 states and 169 transitions. [2024-06-27 23:00:37,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 79 transitions, 574 flow [2024-06-27 23:00:37,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 79 transitions, 536 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 23:00:37,730 INFO L231 Difference]: Finished difference. Result has 78 places, 53 transitions, 355 flow [2024-06-27 23:00:37,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=355, PETRI_PLACES=78, PETRI_TRANSITIONS=53} [2024-06-27 23:00:37,730 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2024-06-27 23:00:37,731 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 53 transitions, 355 flow [2024-06-27 23:00:37,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:37,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:37,731 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] [2024-06-27 23:00:37,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:00:37,731 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:37,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:37,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2093228427, now seen corresponding path program 2 times [2024-06-27 23:00:37,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:37,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47822536] [2024-06-27 23:00:37,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:37,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:37,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:37,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47822536] [2024-06-27 23:00:37,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47822536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:37,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:37,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:37,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269925207] [2024-06-27 23:00:37,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:37,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:37,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:37,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:37,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:37,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-06-27 23:00:37,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 53 transitions, 355 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:37,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:37,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-06-27 23:00:37,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:37,938 INFO L124 PetriNetUnfolderBase]: 315/742 cut-off events. [2024-06-27 23:00:37,939 INFO L125 PetriNetUnfolderBase]: For 2013/2013 co-relation queries the response was YES. [2024-06-27 23:00:37,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2193 conditions, 742 events. 315/742 cut-off events. For 2013/2013 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4820 event pairs, 84 based on Foata normal form. 8/715 useless extension candidates. Maximal degree in co-relation 2160. Up to 345 conditions per place. [2024-06-27 23:00:37,943 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 42 selfloop transitions, 13 changer transitions 5/73 dead transitions. [2024-06-27 23:00:37,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 73 transitions, 526 flow [2024-06-27 23:00:37,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:37,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:37,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-06-27 23:00:37,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2024-06-27 23:00:37,945 INFO L175 Difference]: Start difference. First operand has 78 places, 53 transitions, 355 flow. Second operand 6 states and 165 transitions. [2024-06-27 23:00:37,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 73 transitions, 526 flow [2024-06-27 23:00:37,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 478 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 23:00:37,949 INFO L231 Difference]: Finished difference. Result has 76 places, 51 transitions, 319 flow [2024-06-27 23:00:37,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=76, PETRI_TRANSITIONS=51} [2024-06-27 23:00:37,950 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2024-06-27 23:00:37,950 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 51 transitions, 319 flow [2024-06-27 23:00:37,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:37,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:37,951 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] [2024-06-27 23:00:37,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:00:37,951 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:37,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:37,951 INFO L85 PathProgramCache]: Analyzing trace with hash -823434229, now seen corresponding path program 3 times [2024-06-27 23:00:37,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:37,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564302268] [2024-06-27 23:00:37,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:37,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:38,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:38,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564302268] [2024-06-27 23:00:38,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564302268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:38,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:38,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:38,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010014096] [2024-06-27 23:00:38,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:38,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:38,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:38,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:38,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:38,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-06-27 23:00:38,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 51 transitions, 319 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:38,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:38,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-06-27 23:00:38,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:38,177 INFO L124 PetriNetUnfolderBase]: 258/615 cut-off events. [2024-06-27 23:00:38,178 INFO L125 PetriNetUnfolderBase]: For 1256/1256 co-relation queries the response was YES. [2024-06-27 23:00:38,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1731 conditions, 615 events. 258/615 cut-off events. For 1256/1256 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3778 event pairs, 66 based on Foata normal form. 8/596 useless extension candidates. Maximal degree in co-relation 1699. Up to 251 conditions per place. [2024-06-27 23:00:38,181 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 36 selfloop transitions, 13 changer transitions 8/70 dead transitions. [2024-06-27 23:00:38,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 70 transitions, 477 flow [2024-06-27 23:00:38,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:00:38,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:00:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2024-06-27 23:00:38,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7024390243902439 [2024-06-27 23:00:38,182 INFO L175 Difference]: Start difference. First operand has 76 places, 51 transitions, 319 flow. Second operand 5 states and 144 transitions. [2024-06-27 23:00:38,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 70 transitions, 477 flow [2024-06-27 23:00:38,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 436 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 23:00:38,186 INFO L231 Difference]: Finished difference. Result has 73 places, 46 transitions, 281 flow [2024-06-27 23:00:38,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=73, PETRI_TRANSITIONS=46} [2024-06-27 23:00:38,186 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2024-06-27 23:00:38,186 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 46 transitions, 281 flow [2024-06-27 23:00:38,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:38,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:38,187 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] [2024-06-27 23:00:38,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:00:38,187 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:38,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:38,188 INFO L85 PathProgramCache]: Analyzing trace with hash 546916041, now seen corresponding path program 4 times [2024-06-27 23:00:38,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:38,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055089991] [2024-06-27 23:00:38,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:38,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:38,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:38,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:38,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055089991] [2024-06-27 23:00:38,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055089991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:38,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:38,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:38,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195810527] [2024-06-27 23:00:38,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:38,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:38,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:38,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:38,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:38,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-06-27 23:00:38,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 46 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:38,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:38,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-06-27 23:00:38,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:38,349 INFO L124 PetriNetUnfolderBase]: 240/579 cut-off events. [2024-06-27 23:00:38,350 INFO L125 PetriNetUnfolderBase]: For 1397/1397 co-relation queries the response was YES. [2024-06-27 23:00:38,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 579 events. 240/579 cut-off events. For 1397/1397 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3500 event pairs, 61 based on Foata normal form. 8/566 useless extension candidates. Maximal degree in co-relation 1614. Up to 172 conditions per place. [2024-06-27 23:00:38,354 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 37 selfloop transitions, 10 changer transitions 9/69 dead transitions. [2024-06-27 23:00:38,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 69 transitions, 461 flow [2024-06-27 23:00:38,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:38,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:38,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-06-27 23:00:38,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2024-06-27 23:00:38,355 INFO L175 Difference]: Start difference. First operand has 73 places, 46 transitions, 281 flow. Second operand 6 states and 165 transitions. [2024-06-27 23:00:38,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 69 transitions, 461 flow [2024-06-27 23:00:38,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 391 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 23:00:38,359 INFO L231 Difference]: Finished difference. Result has 67 places, 44 transitions, 223 flow [2024-06-27 23:00:38,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=67, PETRI_TRANSITIONS=44} [2024-06-27 23:00:38,360 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-06-27 23:00:38,360 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 44 transitions, 223 flow [2024-06-27 23:00:38,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:38,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:38,360 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] [2024-06-27 23:00:38,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:00:38,361 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:38,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:38,361 INFO L85 PathProgramCache]: Analyzing trace with hash 547036011, now seen corresponding path program 5 times [2024-06-27 23:00:38,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:38,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978506604] [2024-06-27 23:00:38,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:38,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:38,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:38,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:38,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978506604] [2024-06-27 23:00:38,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978506604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:38,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:38,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:38,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505172232] [2024-06-27 23:00:38,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:38,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:38,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:38,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:38,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:38,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-06-27 23:00:38,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 44 transitions, 223 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:38,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:38,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-06-27 23:00:38,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:38,549 INFO L124 PetriNetUnfolderBase]: 218/539 cut-off events. [2024-06-27 23:00:38,550 INFO L125 PetriNetUnfolderBase]: For 1187/1187 co-relation queries the response was YES. [2024-06-27 23:00:38,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1437 conditions, 539 events. 218/539 cut-off events. For 1187/1187 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3277 event pairs, 52 based on Foata normal form. 8/529 useless extension candidates. Maximal degree in co-relation 1413. Up to 257 conditions per place. [2024-06-27 23:00:38,553 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 33 selfloop transitions, 9 changer transitions 13/68 dead transitions. [2024-06-27 23:00:38,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 68 transitions, 392 flow [2024-06-27 23:00:38,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:00:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:00:38,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-27 23:00:38,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6515679442508711 [2024-06-27 23:00:38,554 INFO L175 Difference]: Start difference. First operand has 67 places, 44 transitions, 223 flow. Second operand 7 states and 187 transitions. [2024-06-27 23:00:38,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 68 transitions, 392 flow [2024-06-27 23:00:38,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 368 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:00:38,557 INFO L231 Difference]: Finished difference. Result has 67 places, 42 transitions, 206 flow [2024-06-27 23:00:38,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=67, PETRI_TRANSITIONS=42} [2024-06-27 23:00:38,558 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-06-27 23:00:38,558 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 42 transitions, 206 flow [2024-06-27 23:00:38,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:38,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:38,559 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] [2024-06-27 23:00:38,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:00:38,559 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:38,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:38,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1864895227, now seen corresponding path program 6 times [2024-06-27 23:00:38,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:38,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116826520] [2024-06-27 23:00:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:38,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:38,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:38,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116826520] [2024-06-27 23:00:38,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116826520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:38,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:38,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:38,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959716812] [2024-06-27 23:00:38,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:38,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:38,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:38,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:38,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:38,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-06-27 23:00:38,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 42 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:38,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:38,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-06-27 23:00:38,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:38,724 INFO L124 PetriNetUnfolderBase]: 194/463 cut-off events. [2024-06-27 23:00:38,724 INFO L125 PetriNetUnfolderBase]: For 901/901 co-relation queries the response was YES. [2024-06-27 23:00:38,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1233 conditions, 463 events. 194/463 cut-off events. For 901/901 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2546 event pairs, 40 based on Foata normal form. 8/460 useless extension candidates. Maximal degree in co-relation 1209. Up to 126 conditions per place. [2024-06-27 23:00:38,727 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 34 selfloop transitions, 9 changer transitions 9/65 dead transitions. [2024-06-27 23:00:38,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 376 flow [2024-06-27 23:00:38,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:38,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-06-27 23:00:38,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2024-06-27 23:00:38,728 INFO L175 Difference]: Start difference. First operand has 67 places, 42 transitions, 206 flow. Second operand 6 states and 165 transitions. [2024-06-27 23:00:38,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 376 flow [2024-06-27 23:00:38,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 65 transitions, 344 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 23:00:38,732 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 184 flow [2024-06-27 23:00:38,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2024-06-27 23:00:38,733 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-06-27 23:00:38,733 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 184 flow [2024-06-27 23:00:38,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:38,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:38,733 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] [2024-06-27 23:00:38,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:00:38,733 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:38,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:38,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1732139241, now seen corresponding path program 7 times [2024-06-27 23:00:38,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:38,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062114297] [2024-06-27 23:00:38,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:38,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:38,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:38,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062114297] [2024-06-27 23:00:38,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062114297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:38,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:38,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:38,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183557043] [2024-06-27 23:00:38,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:38,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:38,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:38,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:38,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:38,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-06-27 23:00:38,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 40 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:38,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:38,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-06-27 23:00:38,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:38,904 INFO L124 PetriNetUnfolderBase]: 160/377 cut-off events. [2024-06-27 23:00:38,904 INFO L125 PetriNetUnfolderBase]: For 888/888 co-relation queries the response was YES. [2024-06-27 23:00:38,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 377 events. 160/377 cut-off events. For 888/888 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1923 event pairs, 60 based on Foata normal form. 8/377 useless extension candidates. Maximal degree in co-relation 1009. Up to 178 conditions per place. [2024-06-27 23:00:38,907 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 27 selfloop transitions, 5 changer transitions 13/58 dead transitions. [2024-06-27 23:00:38,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 58 transitions, 314 flow [2024-06-27 23:00:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-27 23:00:38,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6504065040650406 [2024-06-27 23:00:38,908 INFO L175 Difference]: Start difference. First operand has 63 places, 40 transitions, 184 flow. Second operand 6 states and 160 transitions. [2024-06-27 23:00:38,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 58 transitions, 314 flow [2024-06-27 23:00:38,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 295 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:00:38,910 INFO L231 Difference]: Finished difference. Result has 62 places, 37 transitions, 155 flow [2024-06-27 23:00:38,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=155, PETRI_PLACES=62, PETRI_TRANSITIONS=37} [2024-06-27 23:00:38,911 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-06-27 23:00:38,911 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 37 transitions, 155 flow [2024-06-27 23:00:38,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:38,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:38,911 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] [2024-06-27 23:00:38,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:00:38,912 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:38,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:38,912 INFO L85 PathProgramCache]: Analyzing trace with hash 511338321, now seen corresponding path program 8 times [2024-06-27 23:00:38,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:38,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26623546] [2024-06-27 23:00:38,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:38,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:38,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:38,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26623546] [2024-06-27 23:00:38,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26623546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:38,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:38,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:38,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652306580] [2024-06-27 23:00:38,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:38,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:38,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:38,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:38,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:39,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-06-27 23:00:39,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 37 transitions, 155 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:39,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:39,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-06-27 23:00:39,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:39,108 INFO L124 PetriNetUnfolderBase]: 176/417 cut-off events. [2024-06-27 23:00:39,128 INFO L125 PetriNetUnfolderBase]: For 771/771 co-relation queries the response was YES. [2024-06-27 23:00:39,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 417 events. 176/417 cut-off events. For 771/771 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2441 event pairs, 50 based on Foata normal form. 8/411 useless extension candidates. Maximal degree in co-relation 1078. Up to 137 conditions per place. [2024-06-27 23:00:39,131 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 32 selfloop transitions, 7 changer transitions 6/58 dead transitions. [2024-06-27 23:00:39,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 58 transitions, 305 flow [2024-06-27 23:00:39,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:00:39,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:00:39,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 23:00:39,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6376306620209059 [2024-06-27 23:00:39,132 INFO L175 Difference]: Start difference. First operand has 62 places, 37 transitions, 155 flow. Second operand 7 states and 183 transitions. [2024-06-27 23:00:39,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 58 transitions, 305 flow [2024-06-27 23:00:39,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 287 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 23:00:39,134 INFO L231 Difference]: Finished difference. Result has 60 places, 36 transitions, 148 flow [2024-06-27 23:00:39,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=148, PETRI_PLACES=60, PETRI_TRANSITIONS=36} [2024-06-27 23:00:39,134 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2024-06-27 23:00:39,134 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 36 transitions, 148 flow [2024-06-27 23:00:39,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:39,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:39,135 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] [2024-06-27 23:00:39,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:00:39,135 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:39,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:39,136 INFO L85 PathProgramCache]: Analyzing trace with hash 321936235, now seen corresponding path program 9 times [2024-06-27 23:00:39,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:39,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323156443] [2024-06-27 23:00:39,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:39,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:39,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:39,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323156443] [2024-06-27 23:00:39,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323156443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:39,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:39,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:39,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374066147] [2024-06-27 23:00:39,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:39,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:39,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:39,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:39,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:39,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-06-27 23:00:39,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 36 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:39,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:39,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-06-27 23:00:39,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:39,322 INFO L124 PetriNetUnfolderBase]: 132/303 cut-off events. [2024-06-27 23:00:39,323 INFO L125 PetriNetUnfolderBase]: For 460/460 co-relation queries the response was YES. [2024-06-27 23:00:39,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 303 events. 132/303 cut-off events. For 460/460 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1481 event pairs, 58 based on Foata normal form. 8/304 useless extension candidates. Maximal degree in co-relation 798. Up to 137 conditions per place. [2024-06-27 23:00:39,324 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 20 selfloop transitions, 4 changer transitions 16/53 dead transitions. [2024-06-27 23:00:39,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 53 transitions, 264 flow [2024-06-27 23:00:39,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:00:39,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:00:39,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 23:00:39,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6236933797909407 [2024-06-27 23:00:39,326 INFO L175 Difference]: Start difference. First operand has 60 places, 36 transitions, 148 flow. Second operand 7 states and 179 transitions. [2024-06-27 23:00:39,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 53 transitions, 264 flow [2024-06-27 23:00:39,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 53 transitions, 254 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 23:00:39,327 INFO L231 Difference]: Finished difference. Result has 61 places, 32 transitions, 118 flow [2024-06-27 23:00:39,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=118, PETRI_PLACES=61, PETRI_TRANSITIONS=32} [2024-06-27 23:00:39,328 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2024-06-27 23:00:39,328 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 32 transitions, 118 flow [2024-06-27 23:00:39,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:39,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:39,328 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] [2024-06-27 23:00:39,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:00:39,328 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:39,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:39,329 INFO L85 PathProgramCache]: Analyzing trace with hash 476308919, now seen corresponding path program 10 times [2024-06-27 23:00:39,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:39,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036981583] [2024-06-27 23:00:39,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:39,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:39,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:39,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036981583] [2024-06-27 23:00:39,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036981583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:39,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:39,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:39,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998368233] [2024-06-27 23:00:39,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:39,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:39,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:39,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:39,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:39,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-06-27 23:00:39,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 32 transitions, 118 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:39,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:39,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-06-27 23:00:39,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:39,471 INFO L124 PetriNetUnfolderBase]: 82/212 cut-off events. [2024-06-27 23:00:39,472 INFO L125 PetriNetUnfolderBase]: For 283/283 co-relation queries the response was YES. [2024-06-27 23:00:39,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 212 events. 82/212 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1030 event pairs, 6 based on Foata normal form. 8/213 useless extension candidates. Maximal degree in co-relation 504. Up to 60 conditions per place. [2024-06-27 23:00:39,473 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 20 selfloop transitions, 4 changer transitions 9/46 dead transitions. [2024-06-27 23:00:39,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 46 transitions, 212 flow [2024-06-27 23:00:39,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:00:39,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:00:39,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 23:00:39,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5914634146341463 [2024-06-27 23:00:39,474 INFO L175 Difference]: Start difference. First operand has 61 places, 32 transitions, 118 flow. Second operand 8 states and 194 transitions. [2024-06-27 23:00:39,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 46 transitions, 212 flow [2024-06-27 23:00:39,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 193 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 23:00:39,475 INFO L231 Difference]: Finished difference. Result has 55 places, 30 transitions, 98 flow [2024-06-27 23:00:39,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=30} [2024-06-27 23:00:39,476 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2024-06-27 23:00:39,476 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 30 transitions, 98 flow [2024-06-27 23:00:39,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:39,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:39,477 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] [2024-06-27 23:00:39,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:00:39,477 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:00:39,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:39,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1025306869, now seen corresponding path program 11 times [2024-06-27 23:00:39,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:39,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032488657] [2024-06-27 23:00:39,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:39,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:39,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:39,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:39,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032488657] [2024-06-27 23:00:39,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032488657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:39,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:39,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:39,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741684633] [2024-06-27 23:00:39,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:39,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:39,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:39,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:39,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:39,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-06-27 23:00:39,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 30 transitions, 98 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:39,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:39,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-06-27 23:00:39,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:39,609 INFO L124 PetriNetUnfolderBase]: 38/112 cut-off events. [2024-06-27 23:00:39,609 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2024-06-27 23:00:39,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 112 events. 38/112 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 363 event pairs, 2 based on Foata normal form. 8/117 useless extension candidates. Maximal degree in co-relation 252. Up to 40 conditions per place. [2024-06-27 23:00:39,610 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2024-06-27 23:00:39,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 36 transitions, 146 flow [2024-06-27 23:00:39,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:39,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 23:00:39,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-06-27 23:00:39,611 INFO L175 Difference]: Start difference. First operand has 55 places, 30 transitions, 98 flow. Second operand 6 states and 144 transitions. [2024-06-27 23:00:39,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 36 transitions, 146 flow [2024-06-27 23:00:39,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 36 transitions, 133 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 23:00:39,612 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2024-06-27 23:00:39,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2024-06-27 23:00:39,613 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2024-06-27 23:00:39,613 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2024-06-27 23:00:39,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:39,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-27 23:00:39,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-27 23:00:39,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-27 23:00:39,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-27 23:00:39,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-27 23:00:39,617 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-27 23:00:39,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:00:39,617 INFO L445 BasicCegarLoop]: Path program histogram: [11, 3, 3, 2, 1, 1, 1] [2024-06-27 23:00:39,620 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 23:00:39,620 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 23:00:39,623 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-27 23:00:39,623 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-27 23:00:39,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 11:00:39 BasicIcfg [2024-06-27 23:00:39,624 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 23:00:39,624 INFO L158 Benchmark]: Toolchain (without parser) took 6013.42ms. Allocated memory was 209.7MB in the beginning and 276.8MB in the end (delta: 67.1MB). Free memory was 131.7MB in the beginning and 220.6MB in the end (delta: -89.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:00:39,624 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 130.0MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:00:39,624 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 209.7MB. Free memory is still 179.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:00:39,625 INFO L158 Benchmark]: CACSL2BoogieTranslator took 494.94ms. Allocated memory is still 209.7MB. Free memory was 131.3MB in the beginning and 106.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-27 23:00:39,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.08ms. Allocated memory is still 209.7MB. Free memory was 106.2MB in the beginning and 104.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 23:00:39,625 INFO L158 Benchmark]: Boogie Preprocessor took 82.05ms. Allocated memory is still 209.7MB. Free memory was 104.0MB in the beginning and 102.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 23:00:39,625 INFO L158 Benchmark]: RCFGBuilder took 738.36ms. Allocated memory is still 209.7MB. Free memory was 101.7MB in the beginning and 170.9MB in the end (delta: -69.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-06-27 23:00:39,625 INFO L158 Benchmark]: TraceAbstraction took 4650.90ms. Allocated memory was 209.7MB in the beginning and 276.8MB in the end (delta: 67.1MB). Free memory was 169.9MB in the beginning and 220.6MB in the end (delta: -50.7MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2024-06-27 23:00:39,626 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 0.16ms. Allocated memory is still 130.0MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 209.7MB. Free memory is still 179.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 494.94ms. Allocated memory is still 209.7MB. Free memory was 131.3MB in the beginning and 106.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.08ms. Allocated memory is still 209.7MB. Free memory was 106.2MB in the beginning and 104.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.05ms. Allocated memory is still 209.7MB. Free memory was 104.0MB in the beginning and 102.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 738.36ms. Allocated memory is still 209.7MB. Free memory was 101.7MB in the beginning and 170.9MB in the end (delta: -69.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 4650.90ms. Allocated memory was 209.7MB in the beginning and 276.8MB in the end (delta: 67.1MB). Free memory was 169.9MB in the beginning and 220.6MB in the end (delta: -50.7MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 783]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 785]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 786]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 67 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.5s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1170 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 942 mSDsluCounter, 198 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 95 mSDsCounter, 93 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2557 IncrementalHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 93 mSolverCounterUnsat, 103 mSDtfsCounter, 2557 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=368occurred in iteration=11, InterpolantAutomatonStates: 125, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 367 NumberOfCodeBlocks, 367 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 345 ConstructedInterpolants, 0 QuantifiedInterpolants, 2103 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 23:00:39,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE