./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/chl-sre-subst.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c ./goblint.2024-05-07_14-17-48.files/protection/chl-sre-subst.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 12:53:05,373 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:53:05,443 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:53:05,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:53:05,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:53:05,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:53:05,481 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:53:05,481 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:53:05,482 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:53:05,485 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:53:05,485 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:53:05,485 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:53:05,486 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:53:05,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:53:05,487 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:53:05,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:53:05,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:53:05,488 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:53:05,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:53:05,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:53:05,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:53:05,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:53:05,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:53:05,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:53:05,490 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:53:05,490 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:53:05,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:53:05,490 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:53:05,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:53:05,491 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:53:05,492 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:53:05,492 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:53:05,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:53:05,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:53:05,493 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:53:05,493 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:53:05,493 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:53:05,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:53:05,493 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:53:05,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:53:05,494 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:53:05,494 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:53:05,494 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:53:05,494 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:53:05,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:53:05,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:53:05,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:53:05,725 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:53:05,726 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:53:05,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/chl-sre-subst.wvr.yml/witness.yml [2024-05-12 12:53:05,799 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:53:05,800 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:53:05,800 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c [2024-05-12 12:53:06,799 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:53:06,947 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:53:06,947 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c [2024-05-12 12:53:06,953 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db4721ec0/993702d00d23475593c5ed30e3fcf931/FLAG94e688049 [2024-05-12 12:53:06,964 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db4721ec0/993702d00d23475593c5ed30e3fcf931 [2024-05-12 12:53:06,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:53:06,967 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:53:06,970 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:53:06,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:53:06,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:53:06,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:53:05" (1/2) ... [2024-05-12 12:53:06,975 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357acbf2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:53:06, skipping insertion in model container [2024-05-12 12:53:06,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:53:05" (1/2) ... [2024-05-12 12:53:06,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@44c1de8a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:53:06, skipping insertion in model container [2024-05-12 12:53:06,977 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:53:06" (2/2) ... [2024-05-12 12:53:06,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357acbf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:06, skipping insertion in model container [2024-05-12 12:53:06,978 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:53:06" (2/2) ... [2024-05-12 12:53:06,978 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:53:06,990 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:53:06,991 INFO L97 edCorrectnessWitness]: Location invariant before [L69-L69] ((! multithreaded || ((((-128 <= result_5 && -1 <= result_5) && result_5 <= 1) && result_5 <= 127) && ((result_5 == -1 || result_5 == 0) || result_5 == 1))) && (! multithreaded || ((((-128 <= result_4 && -1 <= result_4) && result_4 <= 1) && result_4 <= 127) && ((result_4 == -1 || result_4 == 0) || result_4 == 1)))) && (! multithreaded || ((((-128 <= result_3 && -1 <= result_3) && result_3 <= 1) && result_3 <= 127) && ((result_3 == -1 || result_3 == 0) || result_3 == 1))) [2024-05-12 12:53:06,991 INFO L97 edCorrectnessWitness]: Location invariant before [L70-L70] ((! multithreaded || ((((-128 <= result_5 && -1 <= result_5) && result_5 <= 1) && result_5 <= 127) && ((result_5 == -1 || result_5 == 0) || result_5 == 1))) && (! multithreaded || ((((-128 <= result_4 && -1 <= result_4) && result_4 <= 1) && result_4 <= 127) && ((result_4 == -1 || result_4 == 0) || result_4 == 1)))) && (! multithreaded || ((((-128 <= result_3 && -1 <= result_3) && result_3 <= 1) && result_3 <= 127) && ((result_3 == -1 || result_3 == 0) || result_3 == 1))) [2024-05-12 12:53:06,991 INFO L97 edCorrectnessWitness]: Location invariant before [L71-L71] ((! multithreaded || ((((-128 <= result_5 && -1 <= result_5) && result_5 <= 1) && result_5 <= 127) && ((result_5 == -1 || result_5 == 0) || result_5 == 1))) && (! multithreaded || ((((-128 <= result_4 && -1 <= result_4) && result_4 <= 1) && result_4 <= 127) && ((result_4 == -1 || result_4 == 0) || result_4 == 1)))) && (! multithreaded || ((((-128 <= result_3 && -1 <= result_3) && result_3 <= 1) && result_3 <= 127) && ((result_3 == -1 || result_3 == 0) || result_3 == 1))) [2024-05-12 12:53:06,991 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:53:06,991 INFO L106 edCorrectnessWitness]: ghost_update [L68-L68] multithreaded = 1; [2024-05-12 12:53:07,006 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:53:07,135 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c[2333,2346] [2024-05-12 12:53:07,140 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:53:07,147 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:53:07,272 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c[2333,2346] [2024-05-12 12:53:07,273 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:53:07,291 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:53:07,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07 WrapperNode [2024-05-12 12:53:07,292 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:53:07,293 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:53:07,293 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:53:07,293 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:53:07,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,304 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,320 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2024-05-12 12:53:07,326 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:53:07,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:53:07,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:53:07,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:53:07,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,338 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,349 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-05-12 12:53:07,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,349 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,354 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,356 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,357 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,358 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,360 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:53:07,361 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:53:07,361 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:53:07,361 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:53:07,362 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:53:07,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:53:07,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-05-12 12:53:07,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-05-12 12:53:07,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:53:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-05-12 12:53:07,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-05-12 12:53:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-05-12 12:53:07,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-05-12 12:53:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-05-12 12:53:07,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-05-12 12:53:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:53:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:53:07,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:53:07,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 12:53:07,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:53:07,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:53:07,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:53:07,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:53:07,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 12:53:07,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:53:07,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:53:07,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 12:53:07,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 12:53:07,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 12:53:07,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 12:53:07,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:53:07,636 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 12:53:07,717 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:53:07,718 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:53:07,885 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:53:07,886 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:53:07,996 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:53:07,999 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 12:53:07,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:53:07 BoogieIcfgContainer [2024-05-12 12:53:07,999 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:53:08,002 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:53:08,003 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:53:08,005 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:53:08,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:53:05" (1/4) ... [2024-05-12 12:53:08,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7971f153 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:53:08, skipping insertion in model container [2024-05-12 12:53:08,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:53:06" (2/4) ... [2024-05-12 12:53:08,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7971f153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:53:08, skipping insertion in model container [2024-05-12 12:53:08,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (3/4) ... [2024-05-12 12:53:08,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7971f153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:53:08, skipping insertion in model container [2024-05-12 12:53:08,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:53:07" (4/4) ... [2024-05-12 12:53:08,008 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-subst.wvr.c [2024-05-12 12:53:08,022 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:53:08,023 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 12:53:08,023 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:53:08,053 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-05-12 12:53:08,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 29 transitions, 79 flow [2024-05-12 12:53:08,103 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2024-05-12 12:53:08,103 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-05-12 12:53:08,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 26 events. 0/26 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-05-12 12:53:08,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 29 transitions, 79 flow [2024-05-12 12:53:08,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 25 transitions, 68 flow [2024-05-12 12:53:08,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:53:08,133 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;@19c923c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:53:08,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-05-12 12:53:08,139 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:53:08,140 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 12:53:08,140 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:53:08,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:08,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 12:53:08,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:08,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:08,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1759363709, now seen corresponding path program 1 times [2024-05-12 12:53:08,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:08,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435099637] [2024-05-12 12:53:08,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:08,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:08,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:08,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:08,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435099637] [2024-05-12 12:53:08,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435099637] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:08,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:08,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:53:08,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14484150] [2024-05-12 12:53:08,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:08,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:53:08,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:08,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:53:08,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:53:08,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-05-12 12:53:08,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:08,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:08,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-05-12 12:53:08,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:08,605 INFO L124 PetriNetUnfolderBase]: 65/136 cut-off events. [2024-05-12 12:53:08,605 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-05-12 12:53:08,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 136 events. 65/136 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 354 event pairs, 19 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 238. Up to 124 conditions per place. [2024-05-12 12:53:08,611 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 31 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2024-05-12 12:53:08,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 36 transitions, 166 flow [2024-05-12 12:53:08,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:53:08,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:53:08,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-05-12 12:53:08,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2024-05-12 12:53:08,623 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 68 flow. Second operand 3 states and 50 transitions. [2024-05-12 12:53:08,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 36 transitions, 166 flow [2024-05-12 12:53:08,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-05-12 12:53:08,627 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 86 flow [2024-05-12 12:53:08,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2024-05-12 12:53:08,633 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2024-05-12 12:53:08,633 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 86 flow [2024-05-12 12:53:08,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:08,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:08,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:08,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:53:08,635 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:08,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:08,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1294300465, now seen corresponding path program 1 times [2024-05-12 12:53:08,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:08,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716111364] [2024-05-12 12:53:08,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:08,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:08,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:08,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716111364] [2024-05-12 12:53:08,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716111364] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:08,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:08,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:53:08,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878925940] [2024-05-12 12:53:08,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:08,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:53:08,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:08,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:53:08,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:53:08,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-05-12 12:53:08,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:08,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:08,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-05-12 12:53:08,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:09,037 INFO L124 PetriNetUnfolderBase]: 62/130 cut-off events. [2024-05-12 12:53:09,037 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-05-12 12:53:09,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 130 events. 62/130 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 329 event pairs, 12 based on Foata normal form. 3/133 useless extension candidates. Maximal degree in co-relation 157. Up to 99 conditions per place. [2024-05-12 12:53:09,040 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 30 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-05-12 12:53:09,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 36 transitions, 176 flow [2024-05-12 12:53:09,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:53:09,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:53:09,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-05-12 12:53:09,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-05-12 12:53:09,047 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 86 flow. Second operand 3 states and 48 transitions. [2024-05-12 12:53:09,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 36 transitions, 176 flow [2024-05-12 12:53:09,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:53:09,052 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 109 flow [2024-05-12 12:53:09,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-05-12 12:53:09,053 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2024-05-12 12:53:09,053 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 109 flow [2024-05-12 12:53:09,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:09,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:09,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:09,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 12:53:09,054 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:09,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:09,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1721615345, now seen corresponding path program 1 times [2024-05-12 12:53:09,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:09,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430599811] [2024-05-12 12:53:09,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:09,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:09,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:09,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:09,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430599811] [2024-05-12 12:53:09,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430599811] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:09,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:09,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:53:09,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608593683] [2024-05-12 12:53:09,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:09,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:53:09,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:09,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:53:09,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:53:09,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-05-12 12:53:09,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:09,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:09,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-05-12 12:53:09,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:09,289 INFO L124 PetriNetUnfolderBase]: 59/125 cut-off events. [2024-05-12 12:53:09,290 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-05-12 12:53:09,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 125 events. 59/125 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 307 event pairs, 14 based on Foata normal form. 2/127 useless extension candidates. Maximal degree in co-relation 118. Up to 102 conditions per place. [2024-05-12 12:53:09,293 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 33 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2024-05-12 12:53:09,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 39 transitions, 213 flow [2024-05-12 12:53:09,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:53:09,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:53:09,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-05-12 12:53:09,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-05-12 12:53:09,295 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 109 flow. Second operand 3 states and 48 transitions. [2024-05-12 12:53:09,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 39 transitions, 213 flow [2024-05-12 12:53:09,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:53:09,298 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 137 flow [2024-05-12 12:53:09,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2024-05-12 12:53:09,299 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2024-05-12 12:53:09,299 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 137 flow [2024-05-12 12:53:09,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:09,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:09,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:09,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 12:53:09,307 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:09,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:09,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1830468807, now seen corresponding path program 1 times [2024-05-12 12:53:09,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:09,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970080517] [2024-05-12 12:53:09,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:09,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:09,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:09,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970080517] [2024-05-12 12:53:09,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970080517] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:09,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:09,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:53:09,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518177022] [2024-05-12 12:53:09,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:09,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:53:09,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:09,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:53:09,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:53:09,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-05-12 12:53:09,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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) [2024-05-12 12:53:09,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:09,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-05-12 12:53:09,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:09,569 INFO L124 PetriNetUnfolderBase]: 58/122 cut-off events. [2024-05-12 12:53:09,569 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-05-12 12:53:09,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 122 events. 58/122 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 267 event pairs, 20 based on Foata normal form. 2/124 useless extension candidates. Maximal degree in co-relation 185. Up to 70 conditions per place. [2024-05-12 12:53:09,570 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 30 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-05-12 12:53:09,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 213 flow [2024-05-12 12:53:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:53:09,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:53:09,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-05-12 12:53:09,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2024-05-12 12:53:09,573 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 137 flow. Second operand 3 states and 44 transitions. [2024-05-12 12:53:09,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 213 flow [2024-05-12 12:53:09,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:53:09,576 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 141 flow [2024-05-12 12:53:09,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2024-05-12 12:53:09,577 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2024-05-12 12:53:09,577 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 141 flow [2024-05-12 12:53:09,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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) [2024-05-12 12:53:09,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:09,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:09,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 12:53:09,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:09,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:09,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1855352753, now seen corresponding path program 1 times [2024-05-12 12:53:09,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:09,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771076351] [2024-05-12 12:53:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:09,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:09,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:09,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771076351] [2024-05-12 12:53:09,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771076351] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:09,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:09,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:53:09,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253737303] [2024-05-12 12:53:09,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:09,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:53:09,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:09,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:53:09,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:53:09,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-05-12 12:53:09,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:09,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:09,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-05-12 12:53:09,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:09,800 INFO L124 PetriNetUnfolderBase]: 56/119 cut-off events. [2024-05-12 12:53:09,800 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2024-05-12 12:53:09,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 119 events. 56/119 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 284 event pairs, 10 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 193. Up to 102 conditions per place. [2024-05-12 12:53:09,802 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 34 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2024-05-12 12:53:09,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 249 flow [2024-05-12 12:53:09,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:53:09,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:53:09,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-05-12 12:53:09,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2024-05-12 12:53:09,806 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 141 flow. Second operand 3 states and 46 transitions. [2024-05-12 12:53:09,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 249 flow [2024-05-12 12:53:09,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 239 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:53:09,810 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 164 flow [2024-05-12 12:53:09,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2024-05-12 12:53:09,812 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2024-05-12 12:53:09,812 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 164 flow [2024-05-12 12:53:09,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:09,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:09,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:09,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 12:53:09,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:09,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:09,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1681359531, now seen corresponding path program 1 times [2024-05-12 12:53:09,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:09,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046757256] [2024-05-12 12:53:09,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:09,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:09,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:09,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046757256] [2024-05-12 12:53:09,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046757256] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:09,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:09,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:53:09,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539275278] [2024-05-12 12:53:09,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:09,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:53:09,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:09,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:53:09,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:53:09,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-05-12 12:53:09,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:09,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:09,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-05-12 12:53:09,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:10,053 INFO L124 PetriNetUnfolderBase]: 55/117 cut-off events. [2024-05-12 12:53:10,053 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2024-05-12 12:53:10,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 117 events. 55/117 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 267 event pairs, 16 based on Foata normal form. 1/118 useless extension candidates. Maximal degree in co-relation 195. Up to 69 conditions per place. [2024-05-12 12:53:10,055 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 33 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2024-05-12 12:53:10,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 39 transitions, 256 flow [2024-05-12 12:53:10,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:53:10,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:53:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-05-12 12:53:10,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2024-05-12 12:53:10,056 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 164 flow. Second operand 3 states and 44 transitions. [2024-05-12 12:53:10,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 39 transitions, 256 flow [2024-05-12 12:53:10,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:53:10,057 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 176 flow [2024-05-12 12:53:10,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2024-05-12 12:53:10,058 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2024-05-12 12:53:10,058 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 176 flow [2024-05-12 12:53:10,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:10,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:10,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:10,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 12:53:10,059 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:10,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:10,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1681360492, now seen corresponding path program 1 times [2024-05-12 12:53:10,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:10,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870468554] [2024-05-12 12:53:10,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:10,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:10,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:10,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870468554] [2024-05-12 12:53:10,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870468554] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:10,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:10,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:53:10,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089367680] [2024-05-12 12:53:10,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:10,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:53:10,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:10,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:53:10,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:53:10,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-05-12 12:53:10,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:10,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:10,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-05-12 12:53:10,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:10,310 INFO L124 PetriNetUnfolderBase]: 54/115 cut-off events. [2024-05-12 12:53:10,310 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2024-05-12 12:53:10,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 115 events. 54/115 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 261 event pairs, 17 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 162. Up to 78 conditions per place. [2024-05-12 12:53:10,312 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 33 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2024-05-12 12:53:10,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 272 flow [2024-05-12 12:53:10,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:53:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:53:10,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2024-05-12 12:53:10,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4224137931034483 [2024-05-12 12:53:10,313 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 176 flow. Second operand 4 states and 49 transitions. [2024-05-12 12:53:10,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 272 flow [2024-05-12 12:53:10,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:53:10,315 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 185 flow [2024-05-12 12:53:10,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2024-05-12 12:53:10,316 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2024-05-12 12:53:10,316 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 185 flow [2024-05-12 12:53:10,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:10,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:10,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:10,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 12:53:10,317 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:10,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:10,318 INFO L85 PathProgramCache]: Analyzing trace with hash 582537906, now seen corresponding path program 1 times [2024-05-12 12:53:10,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:10,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946869201] [2024-05-12 12:53:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:10,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:10,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:10,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946869201] [2024-05-12 12:53:10,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946869201] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:10,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:10,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:53:10,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211408386] [2024-05-12 12:53:10,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:10,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:53:10,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:10,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:53:10,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:53:10,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-05-12 12:53:10,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:10,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:10,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-05-12 12:53:10,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:10,716 INFO L124 PetriNetUnfolderBase]: 54/114 cut-off events. [2024-05-12 12:53:10,716 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2024-05-12 12:53:10,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 114 events. 54/114 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 242 event pairs, 17 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 144. Up to 77 conditions per place. [2024-05-12 12:53:10,717 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 33 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2024-05-12 12:53:10,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 263 flow [2024-05-12 12:53:10,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:53:10,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:53:10,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2024-05-12 12:53:10,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-05-12 12:53:10,718 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 185 flow. Second operand 4 states and 48 transitions. [2024-05-12 12:53:10,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 263 flow [2024-05-12 12:53:10,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 237 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-05-12 12:53:10,719 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 153 flow [2024-05-12 12:53:10,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2024-05-12 12:53:10,721 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-05-12 12:53:10,721 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 153 flow [2024-05-12 12:53:10,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:10,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:10,721 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] [2024-05-12 12:53:10,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 12:53:10,721 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:10,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:10,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1924803732, now seen corresponding path program 1 times [2024-05-12 12:53:10,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:10,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476437665] [2024-05-12 12:53:10,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:10,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:11,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:11,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:11,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476437665] [2024-05-12 12:53:11,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476437665] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:11,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:11,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:53:11,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109598357] [2024-05-12 12:53:11,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:11,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:53:11,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:11,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:53:11,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:53:11,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-05-12 12:53:11,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:11,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:11,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-05-12 12:53:11,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:11,573 INFO L124 PetriNetUnfolderBase]: 58/146 cut-off events. [2024-05-12 12:53:11,574 INFO L125 PetriNetUnfolderBase]: For 262/262 co-relation queries the response was YES. [2024-05-12 12:53:11,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 146 events. 58/146 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 459 event pairs, 6 based on Foata normal form. 1/147 useless extension candidates. Maximal degree in co-relation 127. Up to 69 conditions per place. [2024-05-12 12:53:11,575 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 42 selfloop transitions, 8 changer transitions 12/63 dead transitions. [2024-05-12 12:53:11,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 63 transitions, 358 flow [2024-05-12 12:53:11,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:53:11,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:53:11,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-05-12 12:53:11,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5804597701149425 [2024-05-12 12:53:11,578 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 153 flow. Second operand 6 states and 101 transitions. [2024-05-12 12:53:11,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 63 transitions, 358 flow [2024-05-12 12:53:11,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 63 transitions, 352 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:53:11,580 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 162 flow [2024-05-12 12:53:11,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2024-05-12 12:53:11,581 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2024-05-12 12:53:11,581 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 162 flow [2024-05-12 12:53:11,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:11,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:11,582 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] [2024-05-12 12:53:11,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 12:53:11,583 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:11,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:11,584 INFO L85 PathProgramCache]: Analyzing trace with hash 922619516, now seen corresponding path program 2 times [2024-05-12 12:53:11,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:11,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875232799] [2024-05-12 12:53:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:11,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:12,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:12,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875232799] [2024-05-12 12:53:12,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875232799] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:12,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:12,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:53:12,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547149531] [2024-05-12 12:53:12,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:12,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:53:12,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:12,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:53:12,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:53:12,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-05-12 12:53:12,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:12,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:12,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-05-12 12:53:12,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:12,381 INFO L124 PetriNetUnfolderBase]: 47/140 cut-off events. [2024-05-12 12:53:12,381 INFO L125 PetriNetUnfolderBase]: For 324/324 co-relation queries the response was YES. [2024-05-12 12:53:12,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 140 events. 47/140 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 462 event pairs, 2 based on Foata normal form. 1/141 useless extension candidates. Maximal degree in co-relation 511. Up to 65 conditions per place. [2024-05-12 12:53:12,382 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 38 selfloop transitions, 7 changer transitions 13/59 dead transitions. [2024-05-12 12:53:12,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 357 flow [2024-05-12 12:53:12,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:53:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:53:12,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-05-12 12:53:12,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-05-12 12:53:12,384 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 162 flow. Second operand 6 states and 98 transitions. [2024-05-12 12:53:12,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 357 flow [2024-05-12 12:53:12,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 341 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-05-12 12:53:12,386 INFO L231 Difference]: Finished difference. Result has 46 places, 28 transitions, 154 flow [2024-05-12 12:53:12,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=154, PETRI_PLACES=46, PETRI_TRANSITIONS=28} [2024-05-12 12:53:12,388 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2024-05-12 12:53:12,388 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 28 transitions, 154 flow [2024-05-12 12:53:12,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:12,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:12,388 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] [2024-05-12 12:53:12,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 12:53:12,389 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:12,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:12,389 INFO L85 PathProgramCache]: Analyzing trace with hash 275766042, now seen corresponding path program 3 times [2024-05-12 12:53:12,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:12,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095419400] [2024-05-12 12:53:12,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:12,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:13,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:13,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095419400] [2024-05-12 12:53:13,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095419400] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:13,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:13,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:53:13,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236657261] [2024-05-12 12:53:13,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:13,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:53:13,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:13,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:53:13,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:53:13,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-05-12 12:53:13,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 28 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:13,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:13,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-05-12 12:53:13,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:13,345 INFO L124 PetriNetUnfolderBase]: 31/98 cut-off events. [2024-05-12 12:53:13,345 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-05-12 12:53:13,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 98 events. 31/98 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 266 event pairs, 0 based on Foata normal form. 1/99 useless extension candidates. Maximal degree in co-relation 375. Up to 40 conditions per place. [2024-05-12 12:53:13,346 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 36 selfloop transitions, 6 changer transitions 12/55 dead transitions. [2024-05-12 12:53:13,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 328 flow [2024-05-12 12:53:13,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:53:13,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:53:13,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-05-12 12:53:13,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459770114942529 [2024-05-12 12:53:13,347 INFO L175 Difference]: Start difference. First operand has 46 places, 28 transitions, 154 flow. Second operand 6 states and 95 transitions. [2024-05-12 12:53:13,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 328 flow [2024-05-12 12:53:13,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 296 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-05-12 12:53:13,349 INFO L231 Difference]: Finished difference. Result has 45 places, 26 transitions, 122 flow [2024-05-12 12:53:13,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=122, PETRI_PLACES=45, PETRI_TRANSITIONS=26} [2024-05-12 12:53:13,349 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2024-05-12 12:53:13,350 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 26 transitions, 122 flow [2024-05-12 12:53:13,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:13,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:13,350 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] [2024-05-12 12:53:13,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 12:53:13,350 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:13,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:13,351 INFO L85 PathProgramCache]: Analyzing trace with hash 730182390, now seen corresponding path program 4 times [2024-05-12 12:53:13,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:13,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866459259] [2024-05-12 12:53:13,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:13,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:13,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:13,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:13,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866459259] [2024-05-12 12:53:13,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866459259] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:13,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:13,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:53:13,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778389053] [2024-05-12 12:53:13,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:13,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:53:13,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:13,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:53:13,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:53:13,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-05-12 12:53:13,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 26 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:13,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:13,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-05-12 12:53:13,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:14,135 INFO L124 PetriNetUnfolderBase]: 21/81 cut-off events. [2024-05-12 12:53:14,136 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2024-05-12 12:53:14,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 81 events. 21/81 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 202 event pairs, 0 based on Foata normal form. 1/82 useless extension candidates. Maximal degree in co-relation 288. Up to 40 conditions per place. [2024-05-12 12:53:14,136 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 25 selfloop transitions, 4 changer transitions 15/45 dead transitions. [2024-05-12 12:53:14,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 265 flow [2024-05-12 12:53:14,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:53:14,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:53:14,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-05-12 12:53:14,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942528735632184 [2024-05-12 12:53:14,138 INFO L175 Difference]: Start difference. First operand has 45 places, 26 transitions, 122 flow. Second operand 6 states and 86 transitions. [2024-05-12 12:53:14,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 265 flow [2024-05-12 12:53:14,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 243 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-05-12 12:53:14,140 INFO L231 Difference]: Finished difference. Result has 45 places, 24 transitions, 104 flow [2024-05-12 12:53:14,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=104, PETRI_PLACES=45, PETRI_TRANSITIONS=24} [2024-05-12 12:53:14,140 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2024-05-12 12:53:14,141 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 24 transitions, 104 flow [2024-05-12 12:53:14,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:53:14,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:14,141 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] [2024-05-12 12:53:14,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 12:53:14,141 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:14,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:14,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1953843948, now seen corresponding path program 5 times [2024-05-12 12:53:14,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:14,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662873881] [2024-05-12 12:53:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:14,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:14,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:14,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662873881] [2024-05-12 12:53:14,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662873881] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:14,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:14,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:53:14,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453358287] [2024-05-12 12:53:14,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:14,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:53:14,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:14,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:53:14,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:53:14,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-05-12 12:53:14,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 24 transitions, 104 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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) [2024-05-12 12:53:14,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:14,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-05-12 12:53:14,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:15,100 INFO L124 PetriNetUnfolderBase]: 12/53 cut-off events. [2024-05-12 12:53:15,100 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-05-12 12:53:15,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 53 events. 12/53 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 0 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 180. Up to 18 conditions per place. [2024-05-12 12:53:15,101 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 23 selfloop transitions, 4 changer transitions 9/37 dead transitions. [2024-05-12 12:53:15,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 37 transitions, 205 flow [2024-05-12 12:53:15,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:53:15,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:53:15,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-05-12 12:53:15,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4187192118226601 [2024-05-12 12:53:15,102 INFO L175 Difference]: Start difference. First operand has 45 places, 24 transitions, 104 flow. Second operand 7 states and 85 transitions. [2024-05-12 12:53:15,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 37 transitions, 205 flow [2024-05-12 12:53:15,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 185 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-05-12 12:53:15,104 INFO L231 Difference]: Finished difference. Result has 44 places, 22 transitions, 78 flow [2024-05-12 12:53:15,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=78, PETRI_PLACES=44, PETRI_TRANSITIONS=22} [2024-05-12 12:53:15,105 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2024-05-12 12:53:15,105 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 22 transitions, 78 flow [2024-05-12 12:53:15,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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) [2024-05-12 12:53:15,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:15,105 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] [2024-05-12 12:53:15,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 12:53:15,106 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:15,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:15,106 INFO L85 PathProgramCache]: Analyzing trace with hash -150465864, now seen corresponding path program 6 times [2024-05-12 12:53:15,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:15,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996077701] [2024-05-12 12:53:15,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:15,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:15,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:15,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996077701] [2024-05-12 12:53:15,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996077701] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:15,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:15,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:53:15,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621637385] [2024-05-12 12:53:15,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:15,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:53:15,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:15,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:53:15,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:53:15,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-05-12 12:53:15,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 22 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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) [2024-05-12 12:53:15,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:15,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-05-12 12:53:15,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:15,882 INFO L124 PetriNetUnfolderBase]: 8/36 cut-off events. [2024-05-12 12:53:15,882 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-05-12 12:53:15,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 36 events. 8/36 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 1/37 useless extension candidates. Maximal degree in co-relation 119. Up to 12 conditions per place. [2024-05-12 12:53:15,882 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2024-05-12 12:53:15,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 28 transitions, 144 flow [2024-05-12 12:53:15,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:53:15,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:53:15,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-05-12 12:53:15,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3842364532019704 [2024-05-12 12:53:15,883 INFO L175 Difference]: Start difference. First operand has 44 places, 22 transitions, 78 flow. Second operand 7 states and 78 transitions. [2024-05-12 12:53:15,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 28 transitions, 144 flow [2024-05-12 12:53:15,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 28 transitions, 126 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-05-12 12:53:15,884 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2024-05-12 12:53:15,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2024-05-12 12:53:15,884 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2024-05-12 12:53:15,884 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2024-05-12 12:53:15,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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) [2024-05-12 12:53:15,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 7 remaining) [2024-05-12 12:53:15,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-05-12 12:53:15,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-05-12 12:53:15,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-05-12 12:53:15,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-05-12 12:53:15,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-05-12 12:53:15,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2024-05-12 12:53:15,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 12:53:15,889 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:15,891 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 12:53:15,891 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 12:53:15,897 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-05-12 12:53:15,897 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-05-12 12:53:15,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 12:53:15 BasicIcfg [2024-05-12 12:53:15,898 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 12:53:15,898 INFO L158 Benchmark]: Toolchain (without parser) took 8931.15ms. Allocated memory was 127.9MB in the beginning and 429.9MB in the end (delta: 302.0MB). Free memory was 70.7MB in the beginning and 215.7MB in the end (delta: -145.0MB). Peak memory consumption was 162.4MB. Max. memory is 16.1GB. [2024-05-12 12:53:15,899 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 127.9MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:53:15,899 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 127.9MB. Free memory was 85.1MB in the beginning and 84.9MB in the end (delta: 193.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:53:15,899 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.36ms. Allocated memory was 127.9MB in the beginning and 178.3MB in the end (delta: 50.3MB). Free memory was 70.4MB in the beginning and 150.1MB in the end (delta: -79.7MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2024-05-12 12:53:15,899 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.57ms. Allocated memory is still 178.3MB. Free memory was 150.1MB in the beginning and 148.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:53:15,899 INFO L158 Benchmark]: Boogie Preprocessor took 33.27ms. Allocated memory is still 178.3MB. Free memory was 148.0MB in the beginning and 145.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:53:15,900 INFO L158 Benchmark]: RCFGBuilder took 638.87ms. Allocated memory is still 178.3MB. Free memory was 145.9MB in the beginning and 110.2MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-05-12 12:53:15,900 INFO L158 Benchmark]: TraceAbstraction took 7895.91ms. Allocated memory was 178.3MB in the beginning and 429.9MB in the end (delta: 251.7MB). Free memory was 109.2MB in the beginning and 215.7MB in the end (delta: -106.5MB). Peak memory consumption was 146.2MB. Max. memory is 16.1GB. [2024-05-12 12:53:15,901 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.18ms. Allocated memory is still 127.9MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 127.9MB. Free memory was 85.1MB in the beginning and 84.9MB in the end (delta: 193.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.36ms. Allocated memory was 127.9MB in the beginning and 178.3MB in the end (delta: 50.3MB). Free memory was 70.4MB in the beginning and 150.1MB in the end (delta: -79.7MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.57ms. Allocated memory is still 178.3MB. Free memory was 150.1MB in the beginning and 148.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.27ms. Allocated memory is still 178.3MB. Free memory was 148.0MB in the beginning and 145.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 638.87ms. Allocated memory is still 178.3MB. Free memory was 145.9MB in the beginning and 110.2MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7895.91ms. Allocated memory was 178.3MB in the beginning and 429.9MB in the end (delta: 251.7MB). Free memory was 109.2MB in the beginning and 215.7MB in the end (delta: -106.5MB). Peak memory consumption was 146.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 69]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 70]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 71]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 77]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.8s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 544 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 494 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1145 IncrementalHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 7 mSDtfsCounter, 1145 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=185occurred in iteration=7, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 3215 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-05-12 12:53:15,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE