./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/chl-poker-hand-symm.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c ./goblint.2024-06-19_11-23-25.files/protection/chl-poker-hand-symm.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:02:10,090 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:02:10,245 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:02:10,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:02:10,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:02:10,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:02:10,276 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:02:10,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:02:10,277 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:02:10,280 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:02:10,280 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:02:10,281 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:02:10,281 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:02:10,282 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:02:10,283 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:02:10,283 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:02:10,283 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:02:10,283 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:02:10,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:02:10,284 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:02:10,284 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:02:10,284 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:02:10,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:02:10,285 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:02:10,285 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:02:10,285 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:02:10,285 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:02:10,285 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:02:10,286 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:02:10,286 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:02:10,287 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:02:10,287 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:02:10,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:02:10,287 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:02:10,288 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:02:10,288 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:02:10,288 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:02:10,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:02:10,288 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:02:10,288 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:02:10,289 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:02:10,289 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:02:10,289 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:02:10,289 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:02:10,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:02:10,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:02:10,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:02:10,582 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:02:10,583 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:02:10,584 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-06-27 18:02:11,739 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:02:11,958 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:02:11,959 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-06-27 18:02:11,967 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0be14b4c1/5e67b7b4ad424d6bada43ed25424b955/FLAG65eb6c189 [2024-06-27 18:02:11,978 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0be14b4c1/5e67b7b4ad424d6bada43ed25424b955 [2024-06-27 18:02:11,980 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:02:11,981 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:02:11,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/chl-poker-hand-symm.wvr.yml/witness.yml [2024-06-27 18:02:12,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:02:12,076 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:02:12,077 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:02:12,077 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:02:12,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:02:12,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:02:11" (1/2) ... [2024-06-27 18:02:12,083 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28215300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:12, skipping insertion in model container [2024-06-27 18:02:12,084 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:02:11" (1/2) ... [2024-06-27 18:02:12,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@57018159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:12, skipping insertion in model container [2024-06-27 18:02:12,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:02:12" (2/2) ... [2024-06-27 18:02:12,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28215300 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:12, skipping insertion in model container [2024-06-27 18:02:12,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:02:12" (2/2) ... [2024-06-27 18:02:12,087 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:02:12,115 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:02:12,116 INFO L97 edCorrectnessWitness]: Location invariant before [L230-L230] (((! multithreaded || 0 <= i1_9) && (! multithreaded || 0 <= i1_14)) && (! multithreaded || i2_16 == 0)) && (! multithreaded || i2_11 == 0) [2024-06-27 18:02:12,117 INFO L97 edCorrectnessWitness]: Location invariant before [L231-L231] (((! multithreaded || 0 <= i1_9) && (! multithreaded || 0 <= i1_14)) && (! multithreaded || i2_16 == 0)) && (! multithreaded || i2_11 == 0) [2024-06-27 18:02:12,117 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:02:12,117 INFO L106 edCorrectnessWitness]: ghost_update [L229-L229] multithreaded = 1; [2024-06-27 18:02:12,156 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:02:12,369 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-06-27 18:02:12,377 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:02:12,385 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:02:12,514 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-06-27 18:02:12,516 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:02:12,529 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:02:12,529 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:12 WrapperNode [2024-06-27 18:02:12,529 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:02:12,530 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:02:12,530 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:02:12,530 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:02:12,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:12" (1/1) ... [2024-06-27 18:02:12,551 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:12" (1/1) ... [2024-06-27 18:02:12,622 INFO L138 Inliner]: procedures = 24, calls = 297, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1564 [2024-06-27 18:02:12,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:02:12,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:02:12,624 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:02:12,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:02:12,632 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:12" (1/1) ... [2024-06-27 18:02:12,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:12" (1/1) ... [2024-06-27 18:02:12,651 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:12" (1/1) ... [2024-06-27 18:02:12,678 INFO L175 MemorySlicer]: Split 186 memory accesses to 2 slices as follows [2, 184]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 8 writes are split as follows [0, 8]. [2024-06-27 18:02:12,679 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:12" (1/1) ... [2024-06-27 18:02:12,679 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:12" (1/1) ... [2024-06-27 18:02:12,705 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:12" (1/1) ... [2024-06-27 18:02:12,714 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:12" (1/1) ... [2024-06-27 18:02:12,787 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:12" (1/1) ... [2024-06-27 18:02:12,792 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:12" (1/1) ... [2024-06-27 18:02:12,799 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:02:12,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:02:12,853 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:02:12,853 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:02:12,854 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:12" (1/1) ... [2024-06-27 18:02:12,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:02:12,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:02:12,894 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 18:02:12,913 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 18:02:12,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:02:12,926 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 18:02:12,926 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 18:02:12,926 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 18:02:12,926 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 18:02:12,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:02:12,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 18:02:12,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 18:02:12,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 18:02:12,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:02:12,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:02:12,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 18:02:12,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:02:12,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:02:12,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 18:02:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 18:02:12,932 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 18:02:13,109 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:02:13,111 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:02:14,251 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:02:14,252 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:02:15,465 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:02:15,466 INFO L320 CfgBuilder]: Removed 12 assume(true) statements. [2024-06-27 18:02:15,467 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:02:15 BoogieIcfgContainer [2024-06-27 18:02:15,467 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:02:15,470 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:02:15,470 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:02:15,473 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:02:15,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:02:11" (1/4) ... [2024-06-27 18:02:15,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a634f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:02:15, skipping insertion in model container [2024-06-27 18:02:15,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:02:12" (2/4) ... [2024-06-27 18:02:15,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a634f4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:02:15, skipping insertion in model container [2024-06-27 18:02:15,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:12" (3/4) ... [2024-06-27 18:02:15,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a634f4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:02:15, skipping insertion in model container [2024-06-27 18:02:15,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:02:15" (4/4) ... [2024-06-27 18:02:15,479 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2024-06-27 18:02:15,501 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:02:15,502 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-27 18:02:15,502 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:02:15,803 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-27 18:02:15,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 99 transitions, 212 flow [2024-06-27 18:02:15,891 INFO L124 PetriNetUnfolderBase]: 28/97 cut-off events. [2024-06-27 18:02:15,891 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 18:02:15,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 97 events. 28/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 252 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 75. Up to 7 conditions per place. [2024-06-27 18:02:15,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 99 transitions, 212 flow [2024-06-27 18:02:15,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 96 transitions, 204 flow [2024-06-27 18:02:15,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:02:15,909 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;@1a778160, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:02:15,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-27 18:02:15,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:02:15,916 INFO L124 PetriNetUnfolderBase]: 8/23 cut-off events. [2024-06-27 18:02:15,916 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:02:15,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:15,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:15,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:15,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:15,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1172158999, now seen corresponding path program 1 times [2024-06-27 18:02:15,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:15,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730988083] [2024-06-27 18:02:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:15,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:16,325 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 18:02:16,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:16,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730988083] [2024-06-27 18:02:16,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730988083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:16,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:16,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:16,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279838275] [2024-06-27 18:02:16,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:16,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:02:16,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:16,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:02:16,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:02:16,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:02:16,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 96 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 18:02:16,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:16,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:02:16,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:17,851 INFO L124 PetriNetUnfolderBase]: 2533/3813 cut-off events. [2024-06-27 18:02:17,851 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-06-27 18:02:17,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7688 conditions, 3813 events. 2533/3813 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 18266 event pairs, 1725 based on Foata normal form. 0/2998 useless extension candidates. Maximal degree in co-relation 7497. Up to 3793 conditions per place. [2024-06-27 18:02:17,875 INFO L140 encePairwiseOnDemand]: 86/99 looper letters, 83 selfloop transitions, 8 changer transitions 0/96 dead transitions. [2024-06-27 18:02:17,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 96 transitions, 386 flow [2024-06-27 18:02:17,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:17,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:17,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-06-27 18:02:17,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-27 18:02:17,887 INFO L175 Difference]: Start difference. First operand has 75 places, 96 transitions, 204 flow. Second operand 3 states and 120 transitions. [2024-06-27 18:02:17,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 96 transitions, 386 flow [2024-06-27 18:02:17,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 96 transitions, 378 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 18:02:17,893 INFO L231 Difference]: Finished difference. Result has 74 places, 96 transitions, 230 flow [2024-06-27 18:02:17,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=74, PETRI_TRANSITIONS=96} [2024-06-27 18:02:17,898 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-06-27 18:02:17,898 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 96 transitions, 230 flow [2024-06-27 18:02:17,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 18:02:17,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:17,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:17,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:02:17,899 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:17,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:17,900 INFO L85 PathProgramCache]: Analyzing trace with hash -192027891, now seen corresponding path program 1 times [2024-06-27 18:02:17,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:17,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468102678] [2024-06-27 18:02:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:17,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:18,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-27 18:02:18,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:18,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468102678] [2024-06-27 18:02:18,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468102678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:18,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:18,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:02:18,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248226761] [2024-06-27 18:02:18,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:18,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:02:18,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:18,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:02:18,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:02:18,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 99 [2024-06-27 18:02:18,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 96 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 18:02:18,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:18,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 99 [2024-06-27 18:02:18,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:19,475 INFO L124 PetriNetUnfolderBase]: 4100/6179 cut-off events. [2024-06-27 18:02:19,475 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-06-27 18:02:19,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12400 conditions, 6179 events. 4100/6179 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 31930 event pairs, 1937 based on Foata normal form. 576/5537 useless extension candidates. Maximal degree in co-relation 12351. Up to 3696 conditions per place. [2024-06-27 18:02:19,503 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 159 selfloop transitions, 3 changer transitions 0/165 dead transitions. [2024-06-27 18:02:19,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 165 transitions, 695 flow [2024-06-27 18:02:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:19,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:19,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-06-27 18:02:19,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892255892255892 [2024-06-27 18:02:19,505 INFO L175 Difference]: Start difference. First operand has 74 places, 96 transitions, 230 flow. Second operand 3 states and 175 transitions. [2024-06-27 18:02:19,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 165 transitions, 695 flow [2024-06-27 18:02:19,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 165 transitions, 687 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:02:19,508 INFO L231 Difference]: Finished difference. Result has 76 places, 98 transitions, 243 flow [2024-06-27 18:02:19,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=76, PETRI_TRANSITIONS=98} [2024-06-27 18:02:19,509 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 1 predicate places. [2024-06-27 18:02:19,510 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 98 transitions, 243 flow [2024-06-27 18:02:19,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 18:02:19,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:19,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:19,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:02:19,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:19,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:19,511 INFO L85 PathProgramCache]: Analyzing trace with hash -607312445, now seen corresponding path program 1 times [2024-06-27 18:02:19,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:19,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325988886] [2024-06-27 18:02:19,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:19,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:19,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-27 18:02:19,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:19,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325988886] [2024-06-27 18:02:19,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325988886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:19,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:19,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:19,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885319868] [2024-06-27 18:02:19,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:19,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:02:19,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:19,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:02:19,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:02:19,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 99 [2024-06-27 18:02:19,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 98 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:19,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:19,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 99 [2024-06-27 18:02:19,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:20,886 INFO L124 PetriNetUnfolderBase]: 3950/5996 cut-off events. [2024-06-27 18:02:20,887 INFO L125 PetriNetUnfolderBase]: For 337/337 co-relation queries the response was YES. [2024-06-27 18:02:20,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12530 conditions, 5996 events. 3950/5996 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 31321 event pairs, 1845 based on Foata normal form. 150/4967 useless extension candidates. Maximal degree in co-relation 12477. Up to 3696 conditions per place. [2024-06-27 18:02:20,912 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 173 selfloop transitions, 4 changer transitions 0/180 dead transitions. [2024-06-27 18:02:20,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 180 transitions, 768 flow [2024-06-27 18:02:20,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:02:20,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:02:20,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-06-27 18:02:20,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2024-06-27 18:02:20,915 INFO L175 Difference]: Start difference. First operand has 76 places, 98 transitions, 243 flow. Second operand 4 states and 195 transitions. [2024-06-27 18:02:20,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 180 transitions, 768 flow [2024-06-27 18:02:20,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 180 transitions, 765 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:02:20,919 INFO L231 Difference]: Finished difference. Result has 78 places, 98 transitions, 254 flow [2024-06-27 18:02:20,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=78, PETRI_TRANSITIONS=98} [2024-06-27 18:02:20,919 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-06-27 18:02:20,920 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 98 transitions, 254 flow [2024-06-27 18:02:20,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:20,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:20,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:20,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:02:20,921 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:20,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:20,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1450563574, now seen corresponding path program 1 times [2024-06-27 18:02:20,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:20,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454349034] [2024-06-27 18:02:20,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:20,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:21,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-27 18:02:21,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:21,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454349034] [2024-06-27 18:02:21,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454349034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:21,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:21,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:21,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979922197] [2024-06-27 18:02:21,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:21,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:02:21,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:21,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:02:21,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:02:21,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 99 [2024-06-27 18:02:21,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 98 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 18:02:21,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:21,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 99 [2024-06-27 18:02:21,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:22,468 INFO L124 PetriNetUnfolderBase]: 3806/5825 cut-off events. [2024-06-27 18:02:22,469 INFO L125 PetriNetUnfolderBase]: For 945/945 co-relation queries the response was YES. [2024-06-27 18:02:22,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12218 conditions, 5825 events. 3806/5825 cut-off events. For 945/945 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 30420 event pairs, 1851 based on Foata normal form. 144/4825 useless extension candidates. Maximal degree in co-relation 12163. Up to 3696 conditions per place. [2024-06-27 18:02:22,491 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 174 selfloop transitions, 4 changer transitions 0/181 dead transitions. [2024-06-27 18:02:22,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 181 transitions, 787 flow [2024-06-27 18:02:22,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:02:22,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:02:22,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2024-06-27 18:02:22,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4898989898989899 [2024-06-27 18:02:22,494 INFO L175 Difference]: Start difference. First operand has 78 places, 98 transitions, 254 flow. Second operand 4 states and 194 transitions. [2024-06-27 18:02:22,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 181 transitions, 787 flow [2024-06-27 18:02:22,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 181 transitions, 781 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:02:22,498 INFO L231 Difference]: Finished difference. Result has 80 places, 99 transitions, 266 flow [2024-06-27 18:02:22,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=80, PETRI_TRANSITIONS=99} [2024-06-27 18:02:22,499 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2024-06-27 18:02:22,499 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 99 transitions, 266 flow [2024-06-27 18:02:22,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 18:02:22,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:22,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:22,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:02:22,500 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:22,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:22,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1472506954, now seen corresponding path program 1 times [2024-06-27 18:02:22,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:22,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107111191] [2024-06-27 18:02:22,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:22,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-27 18:02:22,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:22,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107111191] [2024-06-27 18:02:22,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107111191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:22,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:22,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:02:22,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060801195] [2024-06-27 18:02:22,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:22,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:02:22,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:22,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:02:22,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:02:22,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:02:22,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 99 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 18:02:22,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:22,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:02:22,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:23,633 INFO L124 PetriNetUnfolderBase]: 3776/5797 cut-off events. [2024-06-27 18:02:23,633 INFO L125 PetriNetUnfolderBase]: For 779/799 co-relation queries the response was YES. [2024-06-27 18:02:23,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12256 conditions, 5797 events. 3776/5797 cut-off events. For 779/799 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 30261 event pairs, 2738 based on Foata normal form. 1/4644 useless extension candidates. Maximal degree in co-relation 12196. Up to 5778 conditions per place. [2024-06-27 18:02:23,658 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 93 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2024-06-27 18:02:23,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 101 transitions, 464 flow [2024-06-27 18:02:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:23,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-06-27 18:02:23,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771043771043771 [2024-06-27 18:02:23,660 INFO L175 Difference]: Start difference. First operand has 80 places, 99 transitions, 266 flow. Second operand 3 states and 112 transitions. [2024-06-27 18:02:23,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 101 transitions, 464 flow [2024-06-27 18:02:23,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 101 transitions, 458 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:02:23,664 INFO L231 Difference]: Finished difference. Result has 81 places, 101 transitions, 282 flow [2024-06-27 18:02:23,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=81, PETRI_TRANSITIONS=101} [2024-06-27 18:02:23,664 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2024-06-27 18:02:23,665 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 101 transitions, 282 flow [2024-06-27 18:02:23,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 18:02:23,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:23,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:23,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:02:23,666 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:23,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:23,666 INFO L85 PathProgramCache]: Analyzing trace with hash -875710147, now seen corresponding path program 1 times [2024-06-27 18:02:23,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:23,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104429865] [2024-06-27 18:02:23,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:23,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:23,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-06-27 18:02:23,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:23,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104429865] [2024-06-27 18:02:23,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104429865] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:02:23,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204964109] [2024-06-27 18:02:23,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:23,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:02:23,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:02:23,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:02:23,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 18:02:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:24,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 18:02:24,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:02:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-06-27 18:02:24,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:02:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-06-27 18:02:24,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204964109] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:02:24,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:02:24,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-06-27 18:02:24,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847436237] [2024-06-27 18:02:24,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:02:24,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:02:24,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:24,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:02:24,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:02:24,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:02:24,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 101 transitions, 282 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 18:02:24,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:24,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:02:24,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:25,563 INFO L124 PetriNetUnfolderBase]: 3776/5815 cut-off events. [2024-06-27 18:02:25,563 INFO L125 PetriNetUnfolderBase]: For 538/558 co-relation queries the response was YES. [2024-06-27 18:02:25,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12248 conditions, 5815 events. 3776/5815 cut-off events. For 538/558 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 30257 event pairs, 2738 based on Foata normal form. 6/4668 useless extension candidates. Maximal degree in co-relation 12213. Up to 5774 conditions per place. [2024-06-27 18:02:25,588 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 83 selfloop transitions, 32 changer transitions 0/119 dead transitions. [2024-06-27 18:02:25,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 119 transitions, 568 flow [2024-06-27 18:02:25,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:02:25,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:02:25,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:02:25,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2335858585858586 [2024-06-27 18:02:25,590 INFO L175 Difference]: Start difference. First operand has 81 places, 101 transitions, 282 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:02:25,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 119 transitions, 568 flow [2024-06-27 18:02:25,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 119 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:02:25,593 INFO L231 Difference]: Finished difference. Result has 91 places, 119 transitions, 462 flow [2024-06-27 18:02:25,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=462, PETRI_PLACES=91, PETRI_TRANSITIONS=119} [2024-06-27 18:02:25,594 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 16 predicate places. [2024-06-27 18:02:25,594 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 119 transitions, 462 flow [2024-06-27 18:02:25,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 18:02:25,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:25,595 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:25,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-06-27 18:02:25,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-06-27 18:02:25,809 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:25,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:25,810 INFO L85 PathProgramCache]: Analyzing trace with hash -168706714, now seen corresponding path program 1 times [2024-06-27 18:02:25,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:25,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896092809] [2024-06-27 18:02:25,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:25,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:26,114 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-06-27 18:02:26,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:26,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896092809] [2024-06-27 18:02:26,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896092809] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:02:26,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781388506] [2024-06-27 18:02:26,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:26,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:02:26,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:02:26,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:02:26,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 18:02:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:26,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-27 18:02:26,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:02:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-06-27 18:02:26,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:02:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-06-27 18:02:26,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781388506] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:02:26,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:02:26,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-06-27 18:02:26,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760072291] [2024-06-27 18:02:26,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:02:26,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-06-27 18:02:26,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:26,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-06-27 18:02:26,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2024-06-27 18:02:26,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:02:26,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 119 transitions, 462 flow. Second operand has 17 states, 17 states have (on average 9.882352941176471) internal successors, (168), 17 states have internal predecessors, (168), 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 18:02:26,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:26,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:02:26,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:28,317 INFO L124 PetriNetUnfolderBase]: 3776/5827 cut-off events. [2024-06-27 18:02:28,317 INFO L125 PetriNetUnfolderBase]: For 557/577 co-relation queries the response was YES. [2024-06-27 18:02:28,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12360 conditions, 5827 events. 3776/5827 cut-off events. For 557/577 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 30239 event pairs, 2738 based on Foata normal form. 11/4690 useless extension candidates. Maximal degree in co-relation 12282. Up to 5774 conditions per place. [2024-06-27 18:02:28,345 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 83 selfloop transitions, 44 changer transitions 0/131 dead transitions. [2024-06-27 18:02:28,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 131 transitions, 784 flow [2024-06-27 18:02:28,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 18:02:28,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 18:02:28,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 247 transitions. [2024-06-27 18:02:28,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.15593434343434343 [2024-06-27 18:02:28,348 INFO L175 Difference]: Start difference. First operand has 91 places, 119 transitions, 462 flow. Second operand 16 states and 247 transitions. [2024-06-27 18:02:28,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 131 transitions, 784 flow [2024-06-27 18:02:28,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 131 transitions, 746 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-27 18:02:28,354 INFO L231 Difference]: Finished difference. Result has 106 places, 131 transitions, 606 flow [2024-06-27 18:02:28,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=606, PETRI_PLACES=106, PETRI_TRANSITIONS=131} [2024-06-27 18:02:28,355 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 31 predicate places. [2024-06-27 18:02:28,356 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 131 transitions, 606 flow [2024-06-27 18:02:28,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.882352941176471) internal successors, (168), 17 states have internal predecessors, (168), 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 18:02:28,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:28,357 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:28,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-27 18:02:28,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-06-27 18:02:28,573 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:28,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:28,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1961127598, now seen corresponding path program 2 times [2024-06-27 18:02:28,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:28,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985259633] [2024-06-27 18:02:28,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:28,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-27 18:02:28,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:28,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985259633] [2024-06-27 18:02:28,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985259633] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:02:28,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011963399] [2024-06-27 18:02:28,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 18:02:28,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:02:28,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:02:28,915 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:02:28,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 18:02:29,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-27 18:02:29,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 18:02:29,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 18:02:29,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:02:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-06-27 18:02:29,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 18:02:29,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011963399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:29,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 18:02:29,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2024-06-27 18:02:29,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350688243] [2024-06-27 18:02:29,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:29,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:02:29,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:29,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:02:29,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:02:29,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 99 [2024-06-27 18:02:29,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 131 transitions, 606 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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 18:02:29,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:29,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 99 [2024-06-27 18:02:29,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:30,972 INFO L124 PetriNetUnfolderBase]: 3848/5944 cut-off events. [2024-06-27 18:02:30,972 INFO L125 PetriNetUnfolderBase]: For 854/854 co-relation queries the response was YES. [2024-06-27 18:02:30,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12625 conditions, 5944 events. 3848/5944 cut-off events. For 854/854 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 31137 event pairs, 2151 based on Foata normal form. 72/4866 useless extension candidates. Maximal degree in co-relation 12548. Up to 4583 conditions per place. [2024-06-27 18:02:30,995 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 181 selfloop transitions, 5 changer transitions 0/189 dead transitions. [2024-06-27 18:02:30,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 189 transitions, 1105 flow [2024-06-27 18:02:30,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:02:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:02:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-06-27 18:02:30,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-27 18:02:30,997 INFO L175 Difference]: Start difference. First operand has 106 places, 131 transitions, 606 flow. Second operand 5 states and 174 transitions. [2024-06-27 18:02:30,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 189 transitions, 1105 flow [2024-06-27 18:02:31,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 189 transitions, 991 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 18:02:31,003 INFO L231 Difference]: Finished difference. Result has 102 places, 131 transitions, 506 flow [2024-06-27 18:02:31,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=506, PETRI_PLACES=102, PETRI_TRANSITIONS=131} [2024-06-27 18:02:31,004 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 27 predicate places. [2024-06-27 18:02:31,004 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 131 transitions, 506 flow [2024-06-27 18:02:31,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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 18:02:31,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:31,004 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:31,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-27 18:02:31,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:02:31,219 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:31,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:31,219 INFO L85 PathProgramCache]: Analyzing trace with hash -598060533, now seen corresponding path program 1 times [2024-06-27 18:02:31,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:31,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994901596] [2024-06-27 18:02:31,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:31,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-27 18:02:31,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:31,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994901596] [2024-06-27 18:02:31,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994901596] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:02:31,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654162068] [2024-06-27 18:02:31,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:31,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:02:31,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:02:31,506 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:02:31,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-27 18:02:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:31,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 18:02:31,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:02:32,025 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-27 18:02:32,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:02:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-27 18:02:32,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654162068] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:02:32,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:02:32,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-06-27 18:02:32,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592356242] [2024-06-27 18:02:32,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:02:32,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-06-27 18:02:32,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:32,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-06-27 18:02:32,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=200, Unknown=0, NotChecked=0, Total=380 [2024-06-27 18:02:32,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:02:32,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 131 transitions, 506 flow. Second operand has 20 states, 20 states have (on average 9.65) internal successors, (193), 20 states have internal predecessors, (193), 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 18:02:32,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:32,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:02:32,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:33,290 INFO L124 PetriNetUnfolderBase]: 3848/5958 cut-off events. [2024-06-27 18:02:33,291 INFO L125 PetriNetUnfolderBase]: For 1195/1195 co-relation queries the response was YES. [2024-06-27 18:02:33,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12803 conditions, 5958 events. 3848/5958 cut-off events. For 1195/1195 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 31128 event pairs, 2815 based on Foata normal form. 14/4822 useless extension candidates. Maximal degree in co-relation 12734. Up to 5896 conditions per place. [2024-06-27 18:02:33,319 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 84 selfloop transitions, 58 changer transitions 0/145 dead transitions. [2024-06-27 18:02:33,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 145 transitions, 874 flow [2024-06-27 18:02:33,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:02:33,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:02:33,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 249 transitions. [2024-06-27 18:02:33,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.17965367965367965 [2024-06-27 18:02:33,322 INFO L175 Difference]: Start difference. First operand has 102 places, 131 transitions, 506 flow. Second operand 14 states and 249 transitions. [2024-06-27 18:02:33,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 145 transitions, 874 flow [2024-06-27 18:02:33,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 145 transitions, 868 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:02:33,328 INFO L231 Difference]: Finished difference. Result has 120 places, 145 transitions, 798 flow [2024-06-27 18:02:33,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=798, PETRI_PLACES=120, PETRI_TRANSITIONS=145} [2024-06-27 18:02:33,329 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 45 predicate places. [2024-06-27 18:02:33,329 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 145 transitions, 798 flow [2024-06-27 18:02:33,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.65) internal successors, (193), 20 states have internal predecessors, (193), 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 18:02:33,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:33,330 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:33,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-27 18:02:33,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:02:33,543 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:33,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:33,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1745127550, now seen corresponding path program 2 times [2024-06-27 18:02:33,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:33,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312202190] [2024-06-27 18:02:33,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:33,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-27 18:02:33,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:33,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312202190] [2024-06-27 18:02:33,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312202190] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:02:33,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057123696] [2024-06-27 18:02:33,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 18:02:33,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:02:33,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:02:33,992 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:02:34,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-06-27 18:02:34,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-27 18:02:34,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 18:02:34,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 18:02:34,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:02:34,472 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:02:34,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2024-06-27 18:02:34,497 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-06-27 18:02:34,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 18:02:34,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057123696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:34,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 18:02:34,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2024-06-27 18:02:34,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918089076] [2024-06-27 18:02:34,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:34,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:02:34,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:34,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:02:34,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2024-06-27 18:02:34,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:02:34,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 145 transitions, 798 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 18:02:34,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:34,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:02:34,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:35,985 INFO L124 PetriNetUnfolderBase]: 4736/7351 cut-off events. [2024-06-27 18:02:35,985 INFO L125 PetriNetUnfolderBase]: For 881/881 co-relation queries the response was YES. [2024-06-27 18:02:35,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15704 conditions, 7351 events. 4736/7351 cut-off events. For 881/881 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 40790 event pairs, 1623 based on Foata normal form. 1/5954 useless extension candidates. Maximal degree in co-relation 15607. Up to 4302 conditions per place. [2024-06-27 18:02:36,017 INFO L140 encePairwiseOnDemand]: 78/99 looper letters, 220 selfloop transitions, 22 changer transitions 9/254 dead transitions. [2024-06-27 18:02:36,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 254 transitions, 1542 flow [2024-06-27 18:02:36,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:02:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:02:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 232 transitions. [2024-06-27 18:02:36,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4686868686868687 [2024-06-27 18:02:36,018 INFO L175 Difference]: Start difference. First operand has 120 places, 145 transitions, 798 flow. Second operand 5 states and 232 transitions. [2024-06-27 18:02:36,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 254 transitions, 1542 flow [2024-06-27 18:02:36,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 254 transitions, 1482 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 18:02:36,025 INFO L231 Difference]: Finished difference. Result has 122 places, 163 transitions, 891 flow [2024-06-27 18:02:36,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=891, PETRI_PLACES=122, PETRI_TRANSITIONS=163} [2024-06-27 18:02:36,026 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 47 predicate places. [2024-06-27 18:02:36,026 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 163 transitions, 891 flow [2024-06-27 18:02:36,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 18:02:36,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:36,027 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:36,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-06-27 18:02:36,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-06-27 18:02:36,240 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:36,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:36,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1396954360, now seen corresponding path program 3 times [2024-06-27 18:02:36,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:36,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357247474] [2024-06-27 18:02:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:36,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-27 18:02:36,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:36,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357247474] [2024-06-27 18:02:36,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357247474] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:02:36,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254220802] [2024-06-27 18:02:36,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 18:02:36,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:02:36,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:02:36,604 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:02:36,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-06-27 18:02:37,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-06-27 18:02:37,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 18:02:37,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 18:02:37,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:02:37,078 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:02:37,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2024-06-27 18:02:37,116 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-06-27 18:02:37,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 18:02:37,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254220802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:37,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 18:02:37,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2024-06-27 18:02:37,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089730240] [2024-06-27 18:02:37,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:37,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:02:37,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:37,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:02:37,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2024-06-27 18:02:37,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:02:37,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 163 transitions, 891 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 18:02:37,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:37,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:02:37,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:38,721 INFO L124 PetriNetUnfolderBase]: 4876/7621 cut-off events. [2024-06-27 18:02:38,722 INFO L125 PetriNetUnfolderBase]: For 2200/2200 co-relation queries the response was YES. [2024-06-27 18:02:38,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18743 conditions, 7621 events. 4876/7621 cut-off events. For 2200/2200 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 43235 event pairs, 1629 based on Foata normal form. 1/6188 useless extension candidates. Maximal degree in co-relation 18668. Up to 4642 conditions per place. [2024-06-27 18:02:38,762 INFO L140 encePairwiseOnDemand]: 78/99 looper letters, 217 selfloop transitions, 22 changer transitions 9/251 dead transitions. [2024-06-27 18:02:38,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 251 transitions, 1600 flow [2024-06-27 18:02:38,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:02:38,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:02:38,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 229 transitions. [2024-06-27 18:02:38,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4626262626262626 [2024-06-27 18:02:38,763 INFO L175 Difference]: Start difference. First operand has 122 places, 163 transitions, 891 flow. Second operand 5 states and 229 transitions. [2024-06-27 18:02:38,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 251 transitions, 1600 flow [2024-06-27 18:02:38,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 251 transitions, 1592 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 18:02:38,775 INFO L231 Difference]: Finished difference. Result has 127 places, 163 transitions, 941 flow [2024-06-27 18:02:38,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=941, PETRI_PLACES=127, PETRI_TRANSITIONS=163} [2024-06-27 18:02:38,776 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 52 predicate places. [2024-06-27 18:02:38,776 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 163 transitions, 941 flow [2024-06-27 18:02:38,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 18:02:38,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:38,776 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:38,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-06-27 18:02:38,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:02:38,990 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:38,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:38,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2063384416, now seen corresponding path program 1 times [2024-06-27 18:02:38,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:38,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663836484] [2024-06-27 18:02:38,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:38,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-27 18:02:39,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:39,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663836484] [2024-06-27 18:02:39,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663836484] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:02:39,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239069849] [2024-06-27 18:02:39,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:39,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:02:39,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:02:39,472 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:02:39,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-06-27 18:02:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:40,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 16 conjunts are in the unsatisfiable core [2024-06-27 18:02:40,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:02:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-27 18:02:40,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:02:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-27 18:02:40,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239069849] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:02:40,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:02:40,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-06-27 18:02:40,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624449764] [2024-06-27 18:02:40,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:02:40,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-06-27 18:02:40,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:40,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-06-27 18:02:40,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=484, Unknown=0, NotChecked=0, Total=812 [2024-06-27 18:02:40,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:02:40,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 163 transitions, 941 flow. Second operand has 29 states, 29 states have (on average 9.206896551724139) internal successors, (267), 29 states have internal predecessors, (267), 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 18:02:40,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:40,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:02:40,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:41,956 INFO L124 PetriNetUnfolderBase]: 4863/7599 cut-off events. [2024-06-27 18:02:41,956 INFO L125 PetriNetUnfolderBase]: For 4271/4271 co-relation queries the response was YES. [2024-06-27 18:02:41,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19619 conditions, 7599 events. 4863/7599 cut-off events. For 4271/4271 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 42694 event pairs, 3638 based on Foata normal form. 2/6167 useless extension candidates. Maximal degree in co-relation 19541. Up to 7531 conditions per place. [2024-06-27 18:02:41,988 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 102 selfloop transitions, 60 changer transitions 0/165 dead transitions. [2024-06-27 18:02:41,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 165 transitions, 1281 flow [2024-06-27 18:02:41,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-06-27 18:02:41,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-06-27 18:02:41,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 281 transitions. [2024-06-27 18:02:41,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.14191919191919192 [2024-06-27 18:02:41,991 INFO L175 Difference]: Start difference. First operand has 127 places, 163 transitions, 941 flow. Second operand 20 states and 281 transitions. [2024-06-27 18:02:41,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 165 transitions, 1281 flow [2024-06-27 18:02:42,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 165 transitions, 1256 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 18:02:42,009 INFO L231 Difference]: Finished difference. Result has 144 places, 165 transitions, 1062 flow [2024-06-27 18:02:42,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1062, PETRI_PLACES=144, PETRI_TRANSITIONS=165} [2024-06-27 18:02:42,010 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 69 predicate places. [2024-06-27 18:02:42,010 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 165 transitions, 1062 flow [2024-06-27 18:02:42,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.206896551724139) internal successors, (267), 29 states have internal predecessors, (267), 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 18:02:42,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:42,010 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:42,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-06-27 18:02:42,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:02:42,225 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:42,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:42,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1537631943, now seen corresponding path program 2 times [2024-06-27 18:02:42,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:42,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493210286] [2024-06-27 18:02:42,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:42,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:42,617 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:02:42,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:42,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493210286] [2024-06-27 18:02:42,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493210286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:42,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:42,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:42,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896615535] [2024-06-27 18:02:42,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:42,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:02:42,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:42,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:02:42,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:02:42,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:02:42,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 165 transitions, 1062 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 18:02:42,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:42,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:02:42,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:44,452 INFO L124 PetriNetUnfolderBase]: 4788/7524 cut-off events. [2024-06-27 18:02:44,452 INFO L125 PetriNetUnfolderBase]: For 2685/2685 co-relation queries the response was YES. [2024-06-27 18:02:44,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19354 conditions, 7524 events. 4788/7524 cut-off events. For 2685/2685 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 42560 event pairs, 3054 based on Foata normal form. 75/6165 useless extension candidates. Maximal degree in co-relation 19237. Up to 6094 conditions per place. [2024-06-27 18:02:44,480 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 198 selfloop transitions, 4 changer transitions 1/206 dead transitions. [2024-06-27 18:02:44,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 206 transitions, 1579 flow [2024-06-27 18:02:44,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:44,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:44,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-06-27 18:02:44,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117845117845118 [2024-06-27 18:02:44,482 INFO L175 Difference]: Start difference. First operand has 144 places, 165 transitions, 1062 flow. Second operand 3 states and 152 transitions. [2024-06-27 18:02:44,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 206 transitions, 1579 flow [2024-06-27 18:02:44,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 206 transitions, 1399 flow, removed 14 selfloop flow, removed 17 redundant places. [2024-06-27 18:02:44,498 INFO L231 Difference]: Finished difference. Result has 130 places, 164 transitions, 890 flow [2024-06-27 18:02:44,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=890, PETRI_PLACES=130, PETRI_TRANSITIONS=164} [2024-06-27 18:02:44,499 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 55 predicate places. [2024-06-27 18:02:44,499 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 164 transitions, 890 flow [2024-06-27 18:02:44,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 18:02:44,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:44,500 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:44,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:02:44,500 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:44,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:44,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2071233451, now seen corresponding path program 1 times [2024-06-27 18:02:44,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:44,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923285503] [2024-06-27 18:02:44,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:44,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:44,788 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:02:44,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:44,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923285503] [2024-06-27 18:02:44,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923285503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:44,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:44,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:44,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691239532] [2024-06-27 18:02:44,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:44,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:02:44,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:44,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:02:44,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:02:44,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:02:44,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 164 transitions, 890 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 18:02:44,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:44,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:02:44,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:46,388 INFO L124 PetriNetUnfolderBase]: 4713/7449 cut-off events. [2024-06-27 18:02:46,388 INFO L125 PetriNetUnfolderBase]: For 3121/3121 co-relation queries the response was YES. [2024-06-27 18:02:46,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19183 conditions, 7449 events. 4713/7449 cut-off events. For 3121/3121 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 42419 event pairs, 3056 based on Foata normal form. 75/6090 useless extension candidates. Maximal degree in co-relation 19083. Up to 6101 conditions per place. [2024-06-27 18:02:46,426 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 194 selfloop transitions, 4 changer transitions 1/202 dead transitions. [2024-06-27 18:02:46,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 202 transitions, 1390 flow [2024-06-27 18:02:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:46,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-06-27 18:02:46,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016835016835017 [2024-06-27 18:02:46,444 INFO L175 Difference]: Start difference. First operand has 130 places, 164 transitions, 890 flow. Second operand 3 states and 149 transitions. [2024-06-27 18:02:46,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 202 transitions, 1390 flow [2024-06-27 18:02:46,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 202 transitions, 1382 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:02:46,462 INFO L231 Difference]: Finished difference. Result has 131 places, 163 transitions, 890 flow [2024-06-27 18:02:46,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=890, PETRI_PLACES=131, PETRI_TRANSITIONS=163} [2024-06-27 18:02:46,462 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 56 predicate places. [2024-06-27 18:02:46,463 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 163 transitions, 890 flow [2024-06-27 18:02:46,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 18:02:46,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:46,463 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:46,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:02:46,463 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:46,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash -881969135, now seen corresponding path program 1 times [2024-06-27 18:02:46,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:46,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858113529] [2024-06-27 18:02:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:46,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:02:47,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:47,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858113529] [2024-06-27 18:02:47,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858113529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:47,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:47,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:47,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788329951] [2024-06-27 18:02:47,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:47,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:02:47,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:47,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:02:47,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:02:47,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:02:47,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 163 transitions, 890 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 18:02:47,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:47,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:02:47,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:48,522 INFO L124 PetriNetUnfolderBase]: 4692/7621 cut-off events. [2024-06-27 18:02:48,523 INFO L125 PetriNetUnfolderBase]: For 3056/3056 co-relation queries the response was YES. [2024-06-27 18:02:48,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19372 conditions, 7621 events. 4692/7621 cut-off events. For 3056/3056 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 46542 event pairs, 2183 based on Foata normal form. 241/6365 useless extension candidates. Maximal degree in co-relation 19271. Up to 3829 conditions per place. [2024-06-27 18:02:48,568 INFO L140 encePairwiseOnDemand]: 85/99 looper letters, 191 selfloop transitions, 6 changer transitions 18/218 dead transitions. [2024-06-27 18:02:48,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 218 transitions, 1479 flow [2024-06-27 18:02:48,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:48,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:48,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 167 transitions. [2024-06-27 18:02:48,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5622895622895623 [2024-06-27 18:02:48,570 INFO L175 Difference]: Start difference. First operand has 131 places, 163 transitions, 890 flow. Second operand 3 states and 167 transitions. [2024-06-27 18:02:48,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 218 transitions, 1479 flow [2024-06-27 18:02:48,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 218 transitions, 1471 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:02:48,586 INFO L231 Difference]: Finished difference. Result has 133 places, 169 transitions, 988 flow [2024-06-27 18:02:48,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=988, PETRI_PLACES=133, PETRI_TRANSITIONS=169} [2024-06-27 18:02:48,587 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 58 predicate places. [2024-06-27 18:02:48,587 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 169 transitions, 988 flow [2024-06-27 18:02:48,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 18:02:48,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:48,588 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:48,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:02:48,588 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:48,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:48,589 INFO L85 PathProgramCache]: Analyzing trace with hash 606676327, now seen corresponding path program 2 times [2024-06-27 18:02:48,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:48,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489990954] [2024-06-27 18:02:48,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:48,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:49,126 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:02:49,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:49,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489990954] [2024-06-27 18:02:49,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489990954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:49,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:49,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:49,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953342128] [2024-06-27 18:02:49,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:49,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:02:49,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:49,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:02:49,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:02:49,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:02:49,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 169 transitions, 988 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 18:02:49,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:49,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:02:49,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:50,388 INFO L124 PetriNetUnfolderBase]: 4058/6600 cut-off events. [2024-06-27 18:02:50,388 INFO L125 PetriNetUnfolderBase]: For 4182/4182 co-relation queries the response was YES. [2024-06-27 18:02:50,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17498 conditions, 6600 events. 4058/6600 cut-off events. For 4182/4182 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 38722 event pairs, 2202 based on Foata normal form. 91/5326 useless extension candidates. Maximal degree in co-relation 17397. Up to 3887 conditions per place. [2024-06-27 18:02:50,421 INFO L140 encePairwiseOnDemand]: 85/99 looper letters, 195 selfloop transitions, 10 changer transitions 4/212 dead transitions. [2024-06-27 18:02:50,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 212 transitions, 1529 flow [2024-06-27 18:02:50,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:50,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-06-27 18:02:50,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286195286195287 [2024-06-27 18:02:50,424 INFO L175 Difference]: Start difference. First operand has 133 places, 169 transitions, 988 flow. Second operand 3 states and 157 transitions. [2024-06-27 18:02:50,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 212 transitions, 1529 flow [2024-06-27 18:02:50,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 212 transitions, 1525 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:02:50,455 INFO L231 Difference]: Finished difference. Result has 136 places, 177 transitions, 1102 flow [2024-06-27 18:02:50,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1102, PETRI_PLACES=136, PETRI_TRANSITIONS=177} [2024-06-27 18:02:50,456 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 61 predicate places. [2024-06-27 18:02:50,457 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 177 transitions, 1102 flow [2024-06-27 18:02:50,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 18:02:50,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:50,457 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:50,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:02:50,472 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:50,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:50,472 INFO L85 PathProgramCache]: Analyzing trace with hash -42038725, now seen corresponding path program 1 times [2024-06-27 18:02:50,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:50,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569677173] [2024-06-27 18:02:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:50,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:51,470 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:02:51,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:51,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569677173] [2024-06-27 18:02:51,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569677173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:51,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:51,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:02:51,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183107325] [2024-06-27 18:02:51,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:51,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:02:51,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:51,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:02:51,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:02:51,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:02:51,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 177 transitions, 1102 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 18:02:51,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:51,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:02:51,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:53,298 INFO L124 PetriNetUnfolderBase]: 4186/6861 cut-off events. [2024-06-27 18:02:53,298 INFO L125 PetriNetUnfolderBase]: For 5446/5446 co-relation queries the response was YES. [2024-06-27 18:02:53,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18903 conditions, 6861 events. 4186/6861 cut-off events. For 5446/5446 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 40963 event pairs, 3306 based on Foata normal form. 6/5467 useless extension candidates. Maximal degree in co-relation 18801. Up to 6531 conditions per place. [2024-06-27 18:02:53,342 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 197 selfloop transitions, 3 changer transitions 10/213 dead transitions. [2024-06-27 18:02:53,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 213 transitions, 1624 flow [2024-06-27 18:02:53,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:02:53,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:02:53,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2024-06-27 18:02:53,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-27 18:02:53,346 INFO L175 Difference]: Start difference. First operand has 136 places, 177 transitions, 1102 flow. Second operand 4 states and 153 transitions. [2024-06-27 18:02:53,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 213 transitions, 1624 flow [2024-06-27 18:02:53,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 213 transitions, 1614 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:02:53,366 INFO L231 Difference]: Finished difference. Result has 140 places, 177 transitions, 1107 flow [2024-06-27 18:02:53,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1107, PETRI_PLACES=140, PETRI_TRANSITIONS=177} [2024-06-27 18:02:53,367 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 65 predicate places. [2024-06-27 18:02:53,367 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 177 transitions, 1107 flow [2024-06-27 18:02:53,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 18:02:53,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:53,367 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:53,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:02:53,368 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:53,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:53,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1187581829, now seen corresponding path program 2 times [2024-06-27 18:02:53,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:53,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651003648] [2024-06-27 18:02:53,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:53,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:54,250 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:02:54,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:54,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651003648] [2024-06-27 18:02:54,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651003648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:54,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:54,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:02:54,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725946299] [2024-06-27 18:02:54,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:54,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:02:54,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:54,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:02:54,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:02:54,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:02:54,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 177 transitions, 1107 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 18:02:54,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:54,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:02:54,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:55,768 INFO L124 PetriNetUnfolderBase]: 4283/7056 cut-off events. [2024-06-27 18:02:55,768 INFO L125 PetriNetUnfolderBase]: For 4990/4990 co-relation queries the response was YES. [2024-06-27 18:02:55,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19449 conditions, 7056 events. 4283/7056 cut-off events. For 4990/4990 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 42941 event pairs, 1541 based on Foata normal form. 1/5629 useless extension candidates. Maximal degree in co-relation 19369. Up to 4399 conditions per place. [2024-06-27 18:02:55,796 INFO L140 encePairwiseOnDemand]: 80/99 looper letters, 214 selfloop transitions, 29 changer transitions 11/257 dead transitions. [2024-06-27 18:02:55,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 257 transitions, 1826 flow [2024-06-27 18:02:55,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:02:55,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:02:55,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 220 transitions. [2024-06-27 18:02:55,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 18:02:55,798 INFO L175 Difference]: Start difference. First operand has 140 places, 177 transitions, 1107 flow. Second operand 5 states and 220 transitions. [2024-06-27 18:02:55,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 257 transitions, 1826 flow [2024-06-27 18:02:55,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 257 transitions, 1818 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 18:02:55,817 INFO L231 Difference]: Finished difference. Result has 143 places, 177 transitions, 1169 flow [2024-06-27 18:02:55,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1169, PETRI_PLACES=143, PETRI_TRANSITIONS=177} [2024-06-27 18:02:55,818 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 68 predicate places. [2024-06-27 18:02:55,818 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 177 transitions, 1169 flow [2024-06-27 18:02:55,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 18:02:55,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:55,824 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:55,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:02:55,825 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:55,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:55,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1596430013, now seen corresponding path program 1 times [2024-06-27 18:02:55,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:55,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623231274] [2024-06-27 18:02:55,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:55,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-06-27 18:02:56,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:56,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623231274] [2024-06-27 18:02:56,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623231274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:56,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:56,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:56,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603814765] [2024-06-27 18:02:56,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:56,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:02:56,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:56,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:02:56,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:02:56,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:02:56,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 177 transitions, 1169 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 18:02:56,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:56,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:02:56,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:57,695 INFO L124 PetriNetUnfolderBase]: 4233/6994 cut-off events. [2024-06-27 18:02:57,696 INFO L125 PetriNetUnfolderBase]: For 6917/6917 co-relation queries the response was YES. [2024-06-27 18:02:57,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19784 conditions, 6994 events. 4233/6994 cut-off events. For 6917/6917 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 42927 event pairs, 1170 based on Foata normal form. 41/5607 useless extension candidates. Maximal degree in co-relation 19691. Up to 5591 conditions per place. [2024-06-27 18:02:57,733 INFO L140 encePairwiseOnDemand]: 83/99 looper letters, 187 selfloop transitions, 16 changer transitions 2/208 dead transitions. [2024-06-27 18:02:57,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 208 transitions, 1613 flow [2024-06-27 18:02:57,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:57,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:57,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-06-27 18:02:57,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2024-06-27 18:02:57,734 INFO L175 Difference]: Start difference. First operand has 143 places, 177 transitions, 1169 flow. Second operand 3 states and 156 transitions. [2024-06-27 18:02:57,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 208 transitions, 1613 flow [2024-06-27 18:02:57,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 208 transitions, 1582 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 18:02:57,755 INFO L231 Difference]: Finished difference. Result has 143 places, 175 transitions, 1156 flow [2024-06-27 18:02:57,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1156, PETRI_PLACES=143, PETRI_TRANSITIONS=175} [2024-06-27 18:02:57,755 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 68 predicate places. [2024-06-27 18:02:57,755 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 175 transitions, 1156 flow [2024-06-27 18:02:57,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 18:02:57,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:57,756 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:57,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:02:57,756 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:57,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:57,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1838575005, now seen corresponding path program 2 times [2024-06-27 18:02:57,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:57,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919037067] [2024-06-27 18:02:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:57,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-06-27 18:02:58,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:58,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919037067] [2024-06-27 18:02:58,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919037067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:58,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:58,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:58,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903887610] [2024-06-27 18:02:58,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:58,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:02:58,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:58,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:02:58,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:02:58,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:02:58,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 175 transitions, 1156 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 18:02:58,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:58,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:02:58,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:59,326 INFO L124 PetriNetUnfolderBase]: 4133/6797 cut-off events. [2024-06-27 18:02:59,326 INFO L125 PetriNetUnfolderBase]: For 5932/5932 co-relation queries the response was YES. [2024-06-27 18:02:59,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20044 conditions, 6797 events. 4133/6797 cut-off events. For 5932/5932 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 40525 event pairs, 3279 based on Foata normal form. 9/5396 useless extension candidates. Maximal degree in co-relation 19936. Up to 6470 conditions per place. [2024-06-27 18:02:59,363 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 164 selfloop transitions, 0 changer transitions 37/204 dead transitions. [2024-06-27 18:02:59,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 204 transitions, 1592 flow [2024-06-27 18:02:59,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:59,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:59,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-06-27 18:02:59,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 18:02:59,364 INFO L175 Difference]: Start difference. First operand has 143 places, 175 transitions, 1156 flow. Second operand 3 states and 143 transitions. [2024-06-27 18:02:59,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 204 transitions, 1592 flow [2024-06-27 18:02:59,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 204 transitions, 1575 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:02:59,383 INFO L231 Difference]: Finished difference. Result has 143 places, 167 transitions, 1075 flow [2024-06-27 18:02:59,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1075, PETRI_PLACES=143, PETRI_TRANSITIONS=167} [2024-06-27 18:02:59,384 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 68 predicate places. [2024-06-27 18:02:59,384 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 167 transitions, 1075 flow [2024-06-27 18:02:59,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 18:02:59,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:59,384 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:59,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:02:59,385 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:02:59,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:59,385 INFO L85 PathProgramCache]: Analyzing trace with hash -205653522, now seen corresponding path program 1 times [2024-06-27 18:02:59,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:59,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232220365] [2024-06-27 18:02:59,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:59,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:03:00,102 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:03:00,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:03:00,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232220365] [2024-06-27 18:03:00,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232220365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:03:00,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:03:00,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:03:00,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028910216] [2024-06-27 18:03:00,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:03:00,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:03:00,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:03:00,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:03:00,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:03:00,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:03:00,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 167 transitions, 1075 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:03:00,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:03:00,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:03:00,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:03:01,366 INFO L124 PetriNetUnfolderBase]: 3868/6440 cut-off events. [2024-06-27 18:03:01,366 INFO L125 PetriNetUnfolderBase]: For 5234/5234 co-relation queries the response was YES. [2024-06-27 18:03:01,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18302 conditions, 6440 events. 3868/6440 cut-off events. For 5234/5234 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 38731 event pairs, 2816 based on Foata normal form. 54/5279 useless extension candidates. Maximal degree in co-relation 18264. Up to 5436 conditions per place. [2024-06-27 18:03:01,395 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 191 selfloop transitions, 12 changer transitions 8/214 dead transitions. [2024-06-27 18:03:01,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 214 transitions, 1626 flow [2024-06-27 18:03:01,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:03:01,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:03:01,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-06-27 18:03:01,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286195286195287 [2024-06-27 18:03:01,397 INFO L175 Difference]: Start difference. First operand has 143 places, 167 transitions, 1075 flow. Second operand 3 states and 157 transitions. [2024-06-27 18:03:01,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 214 transitions, 1626 flow [2024-06-27 18:03:01,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 214 transitions, 1574 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-27 18:03:01,410 INFO L231 Difference]: Finished difference. Result has 142 places, 171 transitions, 1123 flow [2024-06-27 18:03:01,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1023, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1123, PETRI_PLACES=142, PETRI_TRANSITIONS=171} [2024-06-27 18:03:01,410 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 67 predicate places. [2024-06-27 18:03:01,410 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 171 transitions, 1123 flow [2024-06-27 18:03:01,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:03:01,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:03:01,411 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:03:01,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:03:01,411 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:03:01,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:03:01,411 INFO L85 PathProgramCache]: Analyzing trace with hash 349088932, now seen corresponding path program 2 times [2024-06-27 18:03:01,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:03:01,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378275387] [2024-06-27 18:03:01,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:03:01,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:03:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:03:01,969 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:03:01,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:03:01,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378275387] [2024-06-27 18:03:01,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378275387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:03:01,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:03:01,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:03:01,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007707671] [2024-06-27 18:03:01,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:03:01,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:03:01,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:03:01,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:03:01,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:03:01,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:03:01,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 171 transitions, 1123 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:03:01,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:03:01,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:03:01,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:03:03,222 INFO L124 PetriNetUnfolderBase]: 3658/6106 cut-off events. [2024-06-27 18:03:03,223 INFO L125 PetriNetUnfolderBase]: For 5321/5321 co-relation queries the response was YES. [2024-06-27 18:03:03,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16872 conditions, 6106 events. 3658/6106 cut-off events. For 5321/5321 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 36593 event pairs, 2148 based on Foata normal form. 100/5009 useless extension candidates. Maximal degree in co-relation 16833. Up to 3752 conditions per place. [2024-06-27 18:03:03,248 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 180 selfloop transitions, 6 changer transitions 7/196 dead transitions. [2024-06-27 18:03:03,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 196 transitions, 1468 flow [2024-06-27 18:03:03,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:03:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:03:03,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-06-27 18:03:03,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2024-06-27 18:03:03,249 INFO L175 Difference]: Start difference. First operand has 142 places, 171 transitions, 1123 flow. Second operand 3 states and 147 transitions. [2024-06-27 18:03:03,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 196 transitions, 1468 flow [2024-06-27 18:03:03,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 196 transitions, 1450 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-27 18:03:03,265 INFO L231 Difference]: Finished difference. Result has 143 places, 163 transitions, 1007 flow [2024-06-27 18:03:03,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1007, PETRI_PLACES=143, PETRI_TRANSITIONS=163} [2024-06-27 18:03:03,266 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 68 predicate places. [2024-06-27 18:03:03,266 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 163 transitions, 1007 flow [2024-06-27 18:03:03,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:03:03,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:03:03,266 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:03:03,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:03:03,266 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:03:03,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:03:03,267 INFO L85 PathProgramCache]: Analyzing trace with hash -692548033, now seen corresponding path program 1 times [2024-06-27 18:03:03,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:03:03,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263962199] [2024-06-27 18:03:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:03:03,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:03:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:03:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:03:03,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:03:03,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263962199] [2024-06-27 18:03:03,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263962199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:03:03,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:03:03,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:03:03,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709506709] [2024-06-27 18:03:03,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:03:03,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:03:03,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:03:03,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:03:03,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:03:03,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:03:03,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 163 transitions, 1007 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:03:03,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:03:03,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:03:03,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:03:05,090 INFO L124 PetriNetUnfolderBase]: 3742/6326 cut-off events. [2024-06-27 18:03:05,090 INFO L125 PetriNetUnfolderBase]: For 3861/3861 co-relation queries the response was YES. [2024-06-27 18:03:05,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17307 conditions, 6326 events. 3742/6326 cut-off events. For 3861/3861 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 39019 event pairs, 2130 based on Foata normal form. 59/5143 useless extension candidates. Maximal degree in co-relation 17268. Up to 3700 conditions per place. [2024-06-27 18:03:05,127 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 176 selfloop transitions, 11 changer transitions 8/198 dead transitions. [2024-06-27 18:03:05,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 198 transitions, 1477 flow [2024-06-27 18:03:05,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:03:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:03:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-06-27 18:03:05,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2024-06-27 18:03:05,129 INFO L175 Difference]: Start difference. First operand has 143 places, 163 transitions, 1007 flow. Second operand 3 states and 147 transitions. [2024-06-27 18:03:05,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 198 transitions, 1477 flow [2024-06-27 18:03:05,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 198 transitions, 1437 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 18:03:05,143 INFO L231 Difference]: Finished difference. Result has 142 places, 164 transitions, 1027 flow [2024-06-27 18:03:05,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1027, PETRI_PLACES=142, PETRI_TRANSITIONS=164} [2024-06-27 18:03:05,143 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 67 predicate places. [2024-06-27 18:03:05,143 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 164 transitions, 1027 flow [2024-06-27 18:03:05,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:03:05,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:03:05,144 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:03:05,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:03:05,144 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:03:05,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:03:05,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1155317905, now seen corresponding path program 2 times [2024-06-27 18:03:05,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:03:05,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92130646] [2024-06-27 18:03:05,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:03:05,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:03:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:03:05,823 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:03:05,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:03:05,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92130646] [2024-06-27 18:03:05,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92130646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:03:05,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:03:05,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:03:05,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069389904] [2024-06-27 18:03:05,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:03:05,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:03:05,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:03:05,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:03:05,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:03:05,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:03:05,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 164 transitions, 1027 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:03:05,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:03:05,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:03:05,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:03:06,950 INFO L124 PetriNetUnfolderBase]: 3613/6100 cut-off events. [2024-06-27 18:03:06,950 INFO L125 PetriNetUnfolderBase]: For 4279/4279 co-relation queries the response was YES. [2024-06-27 18:03:06,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16109 conditions, 6100 events. 3613/6100 cut-off events. For 4279/4279 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 36996 event pairs, 2899 based on Foata normal form. 27/4910 useless extension candidates. Maximal degree in co-relation 16073. Up to 5483 conditions per place. [2024-06-27 18:03:06,988 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 171 selfloop transitions, 2 changer transitions 15/191 dead transitions. [2024-06-27 18:03:06,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 191 transitions, 1397 flow [2024-06-27 18:03:06,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:03:06,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:03:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-06-27 18:03:06,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882154882154882 [2024-06-27 18:03:06,989 INFO L175 Difference]: Start difference. First operand has 142 places, 164 transitions, 1027 flow. Second operand 3 states and 145 transitions. [2024-06-27 18:03:06,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 191 transitions, 1397 flow [2024-06-27 18:03:07,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 191 transitions, 1386 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 18:03:07,007 INFO L231 Difference]: Finished difference. Result has 142 places, 154 transitions, 917 flow [2024-06-27 18:03:07,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=917, PETRI_PLACES=142, PETRI_TRANSITIONS=154} [2024-06-27 18:03:07,007 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 67 predicate places. [2024-06-27 18:03:07,007 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 154 transitions, 917 flow [2024-06-27 18:03:07,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:03:07,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:03:07,008 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:03:07,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:03:07,008 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:03:07,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:03:07,009 INFO L85 PathProgramCache]: Analyzing trace with hash -949352589, now seen corresponding path program 1 times [2024-06-27 18:03:07,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:03:07,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217805954] [2024-06-27 18:03:07,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:03:07,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:03:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:03:07,115 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:03:07,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:03:07,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217805954] [2024-06-27 18:03:07,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217805954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:03:07,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:03:07,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:03:07,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241964490] [2024-06-27 18:03:07,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:03:07,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:03:07,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:03:07,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:03:07,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:03:07,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:03:07,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 154 transitions, 917 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:03:07,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:03:07,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:03:07,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:03:08,154 INFO L124 PetriNetUnfolderBase]: 3136/5310 cut-off events. [2024-06-27 18:03:08,155 INFO L125 PetriNetUnfolderBase]: For 2858/2858 co-relation queries the response was YES. [2024-06-27 18:03:08,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13783 conditions, 5310 events. 3136/5310 cut-off events. For 2858/2858 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 31499 event pairs, 2006 based on Foata normal form. 41/4375 useless extension candidates. Maximal degree in co-relation 13748. Up to 3564 conditions per place. [2024-06-27 18:03:08,173 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 159 selfloop transitions, 5 changer transitions 15/182 dead transitions. [2024-06-27 18:03:08,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 182 transitions, 1304 flow [2024-06-27 18:03:08,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:03:08,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:03:08,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-06-27 18:03:08,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:03:08,175 INFO L175 Difference]: Start difference. First operand has 142 places, 154 transitions, 917 flow. Second operand 3 states and 135 transitions. [2024-06-27 18:03:08,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 182 transitions, 1304 flow [2024-06-27 18:03:08,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 182 transitions, 1263 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 18:03:08,186 INFO L231 Difference]: Finished difference. Result has 136 places, 150 transitions, 855 flow [2024-06-27 18:03:08,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=855, PETRI_PLACES=136, PETRI_TRANSITIONS=150} [2024-06-27 18:03:08,187 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 61 predicate places. [2024-06-27 18:03:08,187 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 150 transitions, 855 flow [2024-06-27 18:03:08,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:03:08,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:03:08,187 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:03:08,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:03:08,187 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:03:08,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:03:08,188 INFO L85 PathProgramCache]: Analyzing trace with hash -167582909, now seen corresponding path program 2 times [2024-06-27 18:03:08,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:03:08,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027723733] [2024-06-27 18:03:08,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:03:08,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:03:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:03:08,287 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:03:08,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:03:08,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027723733] [2024-06-27 18:03:08,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027723733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:03:08,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:03:08,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:03:08,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120058592] [2024-06-27 18:03:08,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:03:08,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:03:08,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:03:08,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:03:08,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:03:08,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:03:08,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 150 transitions, 855 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:03:08,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:03:08,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:03:08,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:03:09,200 INFO L124 PetriNetUnfolderBase]: 2986/5052 cut-off events. [2024-06-27 18:03:09,200 INFO L125 PetriNetUnfolderBase]: For 2025/2025 co-relation queries the response was YES. [2024-06-27 18:03:09,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12714 conditions, 5052 events. 2986/5052 cut-off events. For 2025/2025 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 29372 event pairs, 2602 based on Foata normal form. 4/4179 useless extension candidates. Maximal degree in co-relation 12681. Up to 4935 conditions per place. [2024-06-27 18:03:09,223 INFO L140 encePairwiseOnDemand]: 97/99 looper letters, 144 selfloop transitions, 0 changer transitions 14/161 dead transitions. [2024-06-27 18:03:09,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 161 transitions, 1186 flow [2024-06-27 18:03:09,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:03:09,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:03:09,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-06-27 18:03:09,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-27 18:03:09,224 INFO L175 Difference]: Start difference. First operand has 136 places, 150 transitions, 855 flow. Second operand 3 states and 111 transitions. [2024-06-27 18:03:09,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 161 transitions, 1186 flow [2024-06-27 18:03:09,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 161 transitions, 1178 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:03:09,231 INFO L231 Difference]: Finished difference. Result has 135 places, 147 transitions, 825 flow [2024-06-27 18:03:09,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=825, PETRI_PLACES=135, PETRI_TRANSITIONS=147} [2024-06-27 18:03:09,232 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 60 predicate places. [2024-06-27 18:03:09,232 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 147 transitions, 825 flow [2024-06-27 18:03:09,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:03:09,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:03:09,233 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:03:09,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:03:09,233 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:03:09,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:03:09,233 INFO L85 PathProgramCache]: Analyzing trace with hash -266823865, now seen corresponding path program 1 times [2024-06-27 18:03:09,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:03:09,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831400062] [2024-06-27 18:03:09,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:03:09,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:03:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:03:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:03:09,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:03:09,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831400062] [2024-06-27 18:03:09,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831400062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:03:09,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:03:09,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:03:09,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693217821] [2024-06-27 18:03:09,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:03:09,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:03:09,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:03:09,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:03:09,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:03:09,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:03:09,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 147 transitions, 825 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 18:03:09,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:03:09,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:03:09,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:03:10,364 INFO L124 PetriNetUnfolderBase]: 2816/4775 cut-off events. [2024-06-27 18:03:10,365 INFO L125 PetriNetUnfolderBase]: For 1758/1758 co-relation queries the response was YES. [2024-06-27 18:03:10,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11917 conditions, 4775 events. 2816/4775 cut-off events. For 1758/1758 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 27413 event pairs, 2407 based on Foata normal form. 1/3999 useless extension candidates. Maximal degree in co-relation 11884. Up to 4583 conditions per place. [2024-06-27 18:03:10,382 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 147 selfloop transitions, 1 changer transitions 20/171 dead transitions. [2024-06-27 18:03:10,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 171 transitions, 1214 flow [2024-06-27 18:03:10,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:03:10,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:03:10,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-06-27 18:03:10,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32575757575757575 [2024-06-27 18:03:10,383 INFO L175 Difference]: Start difference. First operand has 135 places, 147 transitions, 825 flow. Second operand 4 states and 129 transitions. [2024-06-27 18:03:10,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 171 transitions, 1214 flow [2024-06-27 18:03:10,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 171 transitions, 1214 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 18:03:10,391 INFO L231 Difference]: Finished difference. Result has 136 places, 145 transitions, 813 flow [2024-06-27 18:03:10,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=813, PETRI_PLACES=136, PETRI_TRANSITIONS=145} [2024-06-27 18:03:10,391 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 61 predicate places. [2024-06-27 18:03:10,391 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 145 transitions, 813 flow [2024-06-27 18:03:10,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 18:03:10,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:03:10,392 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:03:10,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:03:10,392 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:03:10,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:03:10,393 INFO L85 PathProgramCache]: Analyzing trace with hash 6064804, now seen corresponding path program 1 times [2024-06-27 18:03:10,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:03:10,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432706251] [2024-06-27 18:03:10,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:03:10,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:03:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:03:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:03:10,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:03:10,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432706251] [2024-06-27 18:03:10,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432706251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:03:10,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:03:10,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:03:10,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679793475] [2024-06-27 18:03:10,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:03:10,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:03:10,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:03:10,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:03:10,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:03:10,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:03:10,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 145 transitions, 813 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 18:03:10,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:03:10,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:03:10,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:03:11,511 INFO L124 PetriNetUnfolderBase]: 2733/4631 cut-off events. [2024-06-27 18:03:11,511 INFO L125 PetriNetUnfolderBase]: For 1704/1704 co-relation queries the response was YES. [2024-06-27 18:03:11,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11523 conditions, 4631 events. 2733/4631 cut-off events. For 1704/1704 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 26292 event pairs, 2328 based on Foata normal form. 1/3870 useless extension candidates. Maximal degree in co-relation 11488. Up to 4439 conditions per place. [2024-06-27 18:03:11,533 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 145 selfloop transitions, 1 changer transitions 20/169 dead transitions. [2024-06-27 18:03:11,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 169 transitions, 1200 flow [2024-06-27 18:03:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:03:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:03:11,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-06-27 18:03:11,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32575757575757575 [2024-06-27 18:03:11,534 INFO L175 Difference]: Start difference. First operand has 136 places, 145 transitions, 813 flow. Second operand 4 states and 129 transitions. [2024-06-27 18:03:11,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 169 transitions, 1200 flow [2024-06-27 18:03:11,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 169 transitions, 1195 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 18:03:11,541 INFO L231 Difference]: Finished difference. Result has 137 places, 143 transitions, 798 flow [2024-06-27 18:03:11,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=798, PETRI_PLACES=137, PETRI_TRANSITIONS=143} [2024-06-27 18:03:11,546 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 62 predicate places. [2024-06-27 18:03:11,546 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 143 transitions, 798 flow [2024-06-27 18:03:11,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 18:03:11,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:03:11,546 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:03:11,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:03:11,547 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:03:11,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:03:11,547 INFO L85 PathProgramCache]: Analyzing trace with hash -138341557, now seen corresponding path program 2 times [2024-06-27 18:03:11,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:03:11,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926100588] [2024-06-27 18:03:11,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:03:11,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:03:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:03:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:03:11,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:03:11,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926100588] [2024-06-27 18:03:11,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926100588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:03:11,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:03:11,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:03:11,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512156736] [2024-06-27 18:03:11,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:03:11,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:03:11,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:03:11,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:03:11,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:03:11,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:03:11,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 143 transitions, 798 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 18:03:11,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:03:11,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:03:11,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:03:12,685 INFO L124 PetriNetUnfolderBase]: 2645/4469 cut-off events. [2024-06-27 18:03:12,686 INFO L125 PetriNetUnfolderBase]: For 1493/1493 co-relation queries the response was YES. [2024-06-27 18:03:12,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11046 conditions, 4469 events. 2645/4469 cut-off events. For 1493/1493 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 24996 event pairs, 2266 based on Foata normal form. 1/3723 useless extension candidates. Maximal degree in co-relation 11011. Up to 4333 conditions per place. [2024-06-27 18:03:12,706 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 135 selfloop transitions, 0 changer transitions 22/160 dead transitions. [2024-06-27 18:03:12,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 160 transitions, 1148 flow [2024-06-27 18:03:12,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:03:12,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:03:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-06-27 18:03:12,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-27 18:03:12,707 INFO L175 Difference]: Start difference. First operand has 137 places, 143 transitions, 798 flow. Second operand 4 states and 121 transitions. [2024-06-27 18:03:12,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 160 transitions, 1148 flow [2024-06-27 18:03:12,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 160 transitions, 1143 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 18:03:12,714 INFO L231 Difference]: Finished difference. Result has 138 places, 138 transitions, 772 flow [2024-06-27 18:03:12,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=772, PETRI_PLACES=138, PETRI_TRANSITIONS=138} [2024-06-27 18:03:12,716 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 63 predicate places. [2024-06-27 18:03:12,716 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 138 transitions, 772 flow [2024-06-27 18:03:12,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 18:03:12,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:03:12,717 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:03:12,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:03:12,717 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:03:12,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:03:12,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1941251606, now seen corresponding path program 2 times [2024-06-27 18:03:12,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:03:12,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164913271] [2024-06-27 18:03:12,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:03:12,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:03:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:03:13,045 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:03:13,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:03:13,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164913271] [2024-06-27 18:03:13,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164913271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:03:13,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:03:13,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:03:13,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164586377] [2024-06-27 18:03:13,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:03:13,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:03:13,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:03:13,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:03:13,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:03:13,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:03:13,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 138 transitions, 772 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 18:03:13,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:03:13,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:03:13,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:03:13,803 INFO L124 PetriNetUnfolderBase]: 2269/3838 cut-off events. [2024-06-27 18:03:13,804 INFO L125 PetriNetUnfolderBase]: For 1309/1309 co-relation queries the response was YES. [2024-06-27 18:03:13,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9517 conditions, 3838 events. 2269/3838 cut-off events. For 1309/1309 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20585 event pairs, 1920 based on Foata normal form. 1/3273 useless extension candidates. Maximal degree in co-relation 9482. Up to 3723 conditions per place. [2024-06-27 18:03:13,821 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 126 selfloop transitions, 0 changer transitions 24/153 dead transitions. [2024-06-27 18:03:13,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 153 transitions, 1104 flow [2024-06-27 18:03:13,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:03:13,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:03:13,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-06-27 18:03:13,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2878787878787879 [2024-06-27 18:03:13,823 INFO L175 Difference]: Start difference. First operand has 138 places, 138 transitions, 772 flow. Second operand 4 states and 114 transitions. [2024-06-27 18:03:13,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 153 transitions, 1104 flow [2024-06-27 18:03:13,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 153 transitions, 1094 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:03:13,829 INFO L231 Difference]: Finished difference. Result has 131 places, 129 transitions, 735 flow [2024-06-27 18:03:13,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=735, PETRI_PLACES=131, PETRI_TRANSITIONS=129} [2024-06-27 18:03:13,830 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 56 predicate places. [2024-06-27 18:03:13,831 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 129 transitions, 735 flow [2024-06-27 18:03:13,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 18:03:13,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:03:13,831 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:03:13,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:03:13,831 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:03:13,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:03:13,832 INFO L85 PathProgramCache]: Analyzing trace with hash -159630049, now seen corresponding path program 1 times [2024-06-27 18:03:13,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:03:13,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169464240] [2024-06-27 18:03:13,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:03:13,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:03:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:03:14,099 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:03:14,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:03:14,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169464240] [2024-06-27 18:03:14,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169464240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:03:14,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:03:14,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:03:14,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98374134] [2024-06-27 18:03:14,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:03:14,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:03:14,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:03:14,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:03:14,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:03:14,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 18:03:14,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 129 transitions, 735 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:03:14,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:03:14,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 18:03:14,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:03:14,720 INFO L124 PetriNetUnfolderBase]: 1632/2797 cut-off events. [2024-06-27 18:03:14,720 INFO L125 PetriNetUnfolderBase]: For 877/877 co-relation queries the response was YES. [2024-06-27 18:03:14,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7025 conditions, 2797 events. 1632/2797 cut-off events. For 877/877 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 13769 event pairs, 1192 based on Foata normal form. 35/2447 useless extension candidates. Maximal degree in co-relation 6992. Up to 2330 conditions per place. [2024-06-27 18:03:14,733 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 144 selfloop transitions, 3 changer transitions 2/152 dead transitions. [2024-06-27 18:03:14,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 152 transitions, 1090 flow [2024-06-27 18:03:14,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:03:14,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:03:14,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-06-27 18:03:14,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602693602693603 [2024-06-27 18:03:14,734 INFO L175 Difference]: Start difference. First operand has 131 places, 129 transitions, 735 flow. Second operand 3 states and 107 transitions. [2024-06-27 18:03:14,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 152 transitions, 1090 flow [2024-06-27 18:03:14,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 152 transitions, 1080 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 18:03:14,738 INFO L231 Difference]: Finished difference. Result has 120 places, 129 transitions, 740 flow [2024-06-27 18:03:14,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=740, PETRI_PLACES=120, PETRI_TRANSITIONS=129} [2024-06-27 18:03:14,739 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 45 predicate places. [2024-06-27 18:03:14,739 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 129 transitions, 740 flow [2024-06-27 18:03:14,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:03:14,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:03:14,740 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:03:14,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:03:14,740 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 18:03:14,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:03:14,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1964899556, now seen corresponding path program 1 times [2024-06-27 18:03:14,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:03:14,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563056848] [2024-06-27 18:03:14,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:03:14,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:03:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:03:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:03:20,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:03:20,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563056848] [2024-06-27 18:03:20,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563056848] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:03:20,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810402767] [2024-06-27 18:03:20,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:03:20,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:03:20,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:03:20,704 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:03:20,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-06-27 18:03:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:03:21,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 25 conjunts are in the unsatisfiable core [2024-06-27 18:03:21,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:03:24,033 INFO L349 Elim1Store]: treesize reduction 3, result has 95.9 percent of original size [2024-06-27 18:03:24,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 105 [2024-06-27 18:03:24,121 INFO L349 Elim1Store]: treesize reduction 3, result has 95.9 percent of original size [2024-06-27 18:03:24,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 111 [2024-06-27 18:03:24,155 INFO L349 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2024-06-27 18:03:24,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 36 [2024-06-27 18:03:24,162 INFO L349 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2024-06-27 18:03:24,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 42 [2024-06-27 18:03:24,207 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 18:03:24,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... Killed by 15