./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 21:54:46,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 21:54:46,524 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 21:54:46,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 21:54:46,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 21:54:46,549 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 21:54:46,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 21:54:46,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 21:54:46,550 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 21:54:46,551 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 21:54:46,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 21:54:46,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 21:54:46,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 21:54:46,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 21:54:46,553 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 21:54:46,553 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 21:54:46,553 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 21:54:46,554 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 21:54:46,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 21:54:46,555 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 21:54:46,555 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 21:54:46,555 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 21:54:46,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 21:54:46,556 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 21:54:46,557 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 21:54:46,557 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 21:54:46,557 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 21:54:46,558 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 21:54:46,558 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 21:54:46,558 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 21:54:46,559 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 21:54:46,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 21:54:46,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:54:46,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 21:54:46,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 21:54:46,561 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 21:54:46,561 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 21:54:46,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 21:54:46,562 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 21:54:46,562 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 21:54:46,563 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 21:54:46,563 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 21:54:46,563 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 21:54:46,564 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 21:54:46,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 21:54:46,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 21:54:46,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 21:54:46,816 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 21:54:46,817 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 21:54:46,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 21:54:46,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 21:54:46,947 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 21:54:46,947 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 21:54:48,118 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 21:54:48,391 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 21:54:48,394 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 21:54:48,407 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/524383be8/257d5dd64be0406485eb961be3f97fa4/FLAG51751a883 [2024-06-27 21:54:48,419 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/524383be8/257d5dd64be0406485eb961be3f97fa4 [2024-06-27 21:54:48,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 21:54:48,420 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 21:54:48,421 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 21:54:48,421 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 21:54:48,426 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 21:54:48,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:54:46" (1/2) ... [2024-06-27 21:54:48,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4a6317 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:54:48, skipping insertion in model container [2024-06-27 21:54:48,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:54:46" (1/2) ... [2024-06-27 21:54:48,429 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1583d549 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:54:48, skipping insertion in model container [2024-06-27 21:54:48,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:54:48" (2/2) ... [2024-06-27 21:54:48,429 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4a6317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:54:48, skipping insertion in model container [2024-06-27 21:54:48,429 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:54:48" (2/2) ... [2024-06-27 21:54:48,430 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 21:54:48,450 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 21:54:48,451 INFO L97 edCorrectnessWitness]: Location invariant before [L790-L790] ! multithreaded || (0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL [2024-06-27 21:54:48,451 INFO L97 edCorrectnessWitness]: Location invariant before [L787-L787] ! multithreaded || (0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL [2024-06-27 21:54:48,451 INFO L97 edCorrectnessWitness]: Location invariant before [L789-L789] ! multithreaded || (0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL [2024-06-27 21:54:48,451 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 21:54:48,452 INFO L106 edCorrectnessWitness]: ghost_update [L785-L785] multithreaded = 1; [2024-06-27 21:54:48,498 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 21:54:48,705 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2024-06-27 21:54:48,845 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:54:48,855 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 21:54:48,894 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 21:54:48,954 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:54:49,003 INFO L206 MainTranslator]: Completed translation [2024-06-27 21:54:49,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:54:49 WrapperNode [2024-06-27 21:54:49,004 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 21:54:49,005 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 21:54:49,006 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 21:54:49,006 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 21:54:49,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:54:49" (1/1) ... [2024-06-27 21:54:49,044 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:54:49" (1/1) ... [2024-06-27 21:54:49,069 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-06-27 21:54:49,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 21:54:49,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 21:54:49,071 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 21:54:49,071 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 21:54:49,081 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:54:49" (1/1) ... [2024-06-27 21:54:49,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:54:49" (1/1) ... [2024-06-27 21:54:49,094 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:54:49" (1/1) ... [2024-06-27 21:54:49,106 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 21:54:49,107 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:54:49" (1/1) ... [2024-06-27 21:54:49,107 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:54:49" (1/1) ... [2024-06-27 21:54:49,111 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:54:49" (1/1) ... [2024-06-27 21:54:49,112 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:54:49" (1/1) ... [2024-06-27 21:54:49,114 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:54:49" (1/1) ... [2024-06-27 21:54:49,115 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:54:49" (1/1) ... [2024-06-27 21:54:49,117 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 21:54:49,118 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 21:54:49,118 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 21:54:49,118 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 21:54:49,119 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:54:49" (1/1) ... [2024-06-27 21:54:49,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:54:49,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:54:49,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 21:54:49,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 21:54:49,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 21:54:49,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 21:54:49,178 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 21:54:49,179 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 21:54:49,179 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 21:54:49,179 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 21:54:49,179 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 21:54:49,179 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 21:54:49,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 21:54:49,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 21:54:49,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 21:54:49,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 21:54:49,181 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 21:54:49,280 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 21:54:49,282 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 21:54:49,407 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 21:54:49,407 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 21:54:49,483 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 21:54:49,484 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 21:54:49,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:54:49 BoogieIcfgContainer [2024-06-27 21:54:49,484 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 21:54:49,486 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 21:54:49,486 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 21:54:49,489 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 21:54:49,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:54:46" (1/4) ... [2024-06-27 21:54:49,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5688c8e6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:54:49, skipping insertion in model container [2024-06-27 21:54:49,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 09:54:48" (2/4) ... [2024-06-27 21:54:49,491 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5688c8e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:54:49, skipping insertion in model container [2024-06-27 21:54:49,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:54:49" (3/4) ... [2024-06-27 21:54:49,491 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5688c8e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:54:49, skipping insertion in model container [2024-06-27 21:54:49,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:54:49" (4/4) ... [2024-06-27 21:54:49,493 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 21:54:49,508 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 21:54:49,509 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 21:54:49,509 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 21:54:49,542 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 21:54:49,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 21:54:49,617 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 21:54:49,618 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:54:49,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 21:54:49,622 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 21:54:49,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 42 transitions, 93 flow [2024-06-27 21:54:49,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 21:54:49,647 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;@657d2240, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 21:54:49,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 21:54:49,652 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 21:54:49,652 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 21:54:49,652 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:54:49,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:54:49,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 21:54:49,653 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)] === [2024-06-27 21:54:49,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:54:49,658 INFO L85 PathProgramCache]: Analyzing trace with hash 214866608, now seen corresponding path program 1 times [2024-06-27 21:54:49,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:54:49,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047959760] [2024-06-27 21:54:49,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:54:49,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:54:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:54:49,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:54:49,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:54:49,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047959760] [2024-06-27 21:54:49,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047959760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:54:49,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:54:49,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 21:54:49,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933482006] [2024-06-27 21:54:49,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:54:49,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:54:49,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:54:50,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:54:50,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:54:50,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 48 [2024-06-27 21:54:50,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:54:50,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:54:50,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 48 [2024-06-27 21:54:50,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:54:50,165 INFO L124 PetriNetUnfolderBase]: 109/279 cut-off events. [2024-06-27 21:54:50,165 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 21:54:50,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 279 events. 109/279 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1427 event pairs, 72 based on Foata normal form. 4/260 useless extension candidates. Maximal degree in co-relation 484. Up to 147 conditions per place. [2024-06-27 21:54:50,170 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 23 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-06-27 21:54:50,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 160 flow [2024-06-27 21:54:50,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:54:50,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:54:50,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-06-27 21:54:50,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-06-27 21:54:50,187 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 93 flow. Second operand 3 states and 112 transitions. [2024-06-27 21:54:50,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 160 flow [2024-06-27 21:54:50,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 21:54:50,194 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 98 flow [2024-06-27 21:54:50,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-06-27 21:54:50,200 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2024-06-27 21:54:50,200 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 98 flow [2024-06-27 21:54:50,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:54:50,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:54:50,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:54:50,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 21:54:50,202 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:54:50,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:54:50,204 INFO L85 PathProgramCache]: Analyzing trace with hash -923679779, now seen corresponding path program 1 times [2024-06-27 21:54:50,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:54:50,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145431444] [2024-06-27 21:54:50,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:54:50,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:54:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:54:50,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:54:50,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:54:50,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145431444] [2024-06-27 21:54:50,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145431444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:54:50,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:54:50,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 21:54:50,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641472358] [2024-06-27 21:54:50,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:54:50,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:54:50,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:54:50,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:54:50,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:54:50,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 48 [2024-06-27 21:54:50,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:54:50,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:54:50,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 48 [2024-06-27 21:54:50,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:54:50,466 INFO L124 PetriNetUnfolderBase]: 173/465 cut-off events. [2024-06-27 21:54:50,467 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-06-27 21:54:50,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 465 events. 173/465 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2790 event pairs, 47 based on Foata normal form. 6/443 useless extension candidates. Maximal degree in co-relation 856. Up to 229 conditions per place. [2024-06-27 21:54:50,475 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 34 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2024-06-27 21:54:50,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 223 flow [2024-06-27 21:54:50,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:54:50,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:54:50,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-06-27 21:54:50,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2024-06-27 21:54:50,478 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 98 flow. Second operand 4 states and 148 transitions. [2024-06-27 21:54:50,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 223 flow [2024-06-27 21:54:50,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 217 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 21:54:50,482 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 118 flow [2024-06-27 21:54:50,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2024-06-27 21:54:50,483 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-06-27 21:54:50,484 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 118 flow [2024-06-27 21:54:50,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:54:50,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:54:50,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:54:50,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 21:54:50,488 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)] === [2024-06-27 21:54:50,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:54:50,494 INFO L85 PathProgramCache]: Analyzing trace with hash 892118427, now seen corresponding path program 1 times [2024-06-27 21:54:50,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:54:50,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774784929] [2024-06-27 21:54:50,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:54:50,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:54:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:54:50,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:54:50,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:54:50,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774784929] [2024-06-27 21:54:50,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774784929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:54:50,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:54:50,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:54:50,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046831057] [2024-06-27 21:54:50,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:54:50,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:54:50,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:54:50,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:54:50,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:54:50,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 48 [2024-06-27 21:54:50,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:54:50,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:54:50,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 48 [2024-06-27 21:54:50,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:54:50,779 INFO L124 PetriNetUnfolderBase]: 225/593 cut-off events. [2024-06-27 21:54:50,780 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2024-06-27 21:54:50,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 593 events. 225/593 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3850 event pairs, 71 based on Foata normal form. 12/576 useless extension candidates. Maximal degree in co-relation 1183. Up to 166 conditions per place. [2024-06-27 21:54:50,785 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 33 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2024-06-27 21:54:50,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 230 flow [2024-06-27 21:54:50,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:54:50,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:54:50,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-06-27 21:54:50,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7604166666666666 [2024-06-27 21:54:50,792 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 118 flow. Second operand 4 states and 146 transitions. [2024-06-27 21:54:50,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 230 flow [2024-06-27 21:54:50,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 21:54:50,795 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 130 flow [2024-06-27 21:54:50,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2024-06-27 21:54:50,796 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-06-27 21:54:50,796 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 130 flow [2024-06-27 21:54:50,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:54:50,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:54:50,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:54:50,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 21:54:50,798 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)] === [2024-06-27 21:54:50,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:54:50,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1286797925, now seen corresponding path program 2 times [2024-06-27 21:54:50,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:54:50,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96768420] [2024-06-27 21:54:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:54:50,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:54:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:54:50,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:54:50,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:54:50,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96768420] [2024-06-27 21:54:50,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96768420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:54:50,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:54:50,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:54:50,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553867162] [2024-06-27 21:54:50,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:54:50,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:54:50,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:54:50,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:54:50,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:54:50,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 48 [2024-06-27 21:54:50,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:54:50,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:54:50,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 48 [2024-06-27 21:54:50,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:54:50,998 INFO L124 PetriNetUnfolderBase]: 209/601 cut-off events. [2024-06-27 21:54:50,999 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-06-27 21:54:51,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1196 conditions, 601 events. 209/601 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4045 event pairs, 35 based on Foata normal form. 12/593 useless extension candidates. Maximal degree in co-relation 1180. Up to 166 conditions per place. [2024-06-27 21:54:51,004 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 32 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-06-27 21:54:51,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 222 flow [2024-06-27 21:54:51,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:54:51,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:54:51,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-06-27 21:54:51,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-06-27 21:54:51,007 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 130 flow. Second operand 4 states and 144 transitions. [2024-06-27 21:54:51,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 222 flow [2024-06-27 21:54:51,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 206 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 21:54:51,011 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 104 flow [2024-06-27 21:54:51,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-06-27 21:54:51,013 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-27 21:54:51,013 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 104 flow [2024-06-27 21:54:51,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:54:51,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:54:51,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:54:51,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 21:54:51,014 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:54:51,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:54:51,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1190848582, now seen corresponding path program 1 times [2024-06-27 21:54:51,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:54:51,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338137551] [2024-06-27 21:54:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:54:51,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:54:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:54:51,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:54:51,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:54:51,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338137551] [2024-06-27 21:54:51,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338137551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:54:51,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:54:51,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:54:51,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992840489] [2024-06-27 21:54:51,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:54:51,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:54:51,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:54:51,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:54:51,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:54:51,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 48 [2024-06-27 21:54:51,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:54:51,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:54:51,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 48 [2024-06-27 21:54:51,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:54:51,381 INFO L124 PetriNetUnfolderBase]: 599/1186 cut-off events. [2024-06-27 21:54:51,382 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 21:54:51,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2203 conditions, 1186 events. 599/1186 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7471 event pairs, 120 based on Foata normal form. 51/1186 useless extension candidates. Maximal degree in co-relation 2191. Up to 500 conditions per place. [2024-06-27 21:54:51,388 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 29 selfloop transitions, 5 changer transitions 1/58 dead transitions. [2024-06-27 21:54:51,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 212 flow [2024-06-27 21:54:51,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:54:51,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:54:51,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-06-27 21:54:51,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7760416666666666 [2024-06-27 21:54:51,391 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 104 flow. Second operand 4 states and 149 transitions. [2024-06-27 21:54:51,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 212 flow [2024-06-27 21:54:51,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 58 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 21:54:51,396 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 133 flow [2024-06-27 21:54:51,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-06-27 21:54:51,398 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-06-27 21:54:51,398 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 133 flow [2024-06-27 21:54:51,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:54:51,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:54:51,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:54:51,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 21:54:51,399 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:54:51,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:54:51,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1387296927, now seen corresponding path program 1 times [2024-06-27 21:54:51,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:54:51,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280926506] [2024-06-27 21:54:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:54:51,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:54:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:54:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:54:51,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:54:51,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280926506] [2024-06-27 21:54:51,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280926506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:54:51,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:54:51,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:54:51,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230853296] [2024-06-27 21:54:51,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:54:51,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:54:51,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:54:51,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:54:51,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:54:51,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 48 [2024-06-27 21:54:51,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:54:51,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:54:51,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 48 [2024-06-27 21:54:51,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:54:51,709 INFO L124 PetriNetUnfolderBase]: 517/1033 cut-off events. [2024-06-27 21:54:51,709 INFO L125 PetriNetUnfolderBase]: For 353/407 co-relation queries the response was YES. [2024-06-27 21:54:51,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2408 conditions, 1033 events. 517/1033 cut-off events. For 353/407 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5992 event pairs, 29 based on Foata normal form. 54/1051 useless extension candidates. Maximal degree in co-relation 2393. Up to 400 conditions per place. [2024-06-27 21:54:51,715 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 36 selfloop transitions, 8 changer transitions 1/68 dead transitions. [2024-06-27 21:54:51,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 68 transitions, 292 flow [2024-06-27 21:54:51,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:54:51,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:54:51,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-06-27 21:54:51,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7791666666666667 [2024-06-27 21:54:51,717 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 133 flow. Second operand 5 states and 187 transitions. [2024-06-27 21:54:51,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 68 transitions, 292 flow [2024-06-27 21:54:51,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 282 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 21:54:51,720 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 173 flow [2024-06-27 21:54:51,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-06-27 21:54:51,723 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-06-27 21:54:51,723 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 173 flow [2024-06-27 21:54:51,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:54:51,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:54:51,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:54:51,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 21:54:51,724 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:54:51,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:54:51,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1368349564, now seen corresponding path program 1 times [2024-06-27 21:54:51,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:54:51,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508926976] [2024-06-27 21:54:51,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:54:51,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:54:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:54:51,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:54:51,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:54:51,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508926976] [2024-06-27 21:54:51,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508926976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:54:51,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:54:51,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:54:51,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064191370] [2024-06-27 21:54:51,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:54:51,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:54:51,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:54:51,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:54:51,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:54:51,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 48 [2024-06-27 21:54:51,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:54:51,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:54:51,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 48 [2024-06-27 21:54:51,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:54:52,025 INFO L124 PetriNetUnfolderBase]: 368/706 cut-off events. [2024-06-27 21:54:52,025 INFO L125 PetriNetUnfolderBase]: For 767/896 co-relation queries the response was YES. [2024-06-27 21:54:52,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1945 conditions, 706 events. 368/706 cut-off events. For 767/896 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3287 event pairs, 12 based on Foata normal form. 48/722 useless extension candidates. Maximal degree in co-relation 1928. Up to 240 conditions per place. [2024-06-27 21:54:52,030 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 34 selfloop transitions, 11 changer transitions 1/69 dead transitions. [2024-06-27 21:54:52,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 69 transitions, 319 flow [2024-06-27 21:54:52,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:54:52,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:54:52,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 216 transitions. [2024-06-27 21:54:52,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-06-27 21:54:52,032 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 173 flow. Second operand 6 states and 216 transitions. [2024-06-27 21:54:52,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 69 transitions, 319 flow [2024-06-27 21:54:52,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 69 transitions, 294 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 21:54:52,039 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 187 flow [2024-06-27 21:54:52,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2024-06-27 21:54:52,041 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2024-06-27 21:54:52,041 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 187 flow [2024-06-27 21:54:52,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:54:52,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:54:52,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:54:52,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 21:54:52,042 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:54:52,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:54:52,043 INFO L85 PathProgramCache]: Analyzing trace with hash -4452845, now seen corresponding path program 1 times [2024-06-27 21:54:52,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:54:52,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164657321] [2024-06-27 21:54:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:54:52,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:54:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:54:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:54:52,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:54:52,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164657321] [2024-06-27 21:54:52,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164657321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:54:52,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:54:52,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:54:52,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347008684] [2024-06-27 21:54:52,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:54:52,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:54:52,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:54:52,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:54:52,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:54:52,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2024-06-27 21:54:52,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:54:52,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:54:52,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2024-06-27 21:54:52,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:54:52,603 INFO L124 PetriNetUnfolderBase]: 1141/2368 cut-off events. [2024-06-27 21:54:52,604 INFO L125 PetriNetUnfolderBase]: For 1329/1373 co-relation queries the response was YES. [2024-06-27 21:54:52,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5514 conditions, 2368 events. 1141/2368 cut-off events. For 1329/1373 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 16451 event pairs, 326 based on Foata normal form. 32/2223 useless extension candidates. Maximal degree in co-relation 5496. Up to 471 conditions per place. [2024-06-27 21:54:52,616 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 44 selfloop transitions, 8 changer transitions 26/102 dead transitions. [2024-06-27 21:54:52,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 102 transitions, 489 flow [2024-06-27 21:54:52,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 21:54:52,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 21:54:52,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2024-06-27 21:54:52,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6967592592592593 [2024-06-27 21:54:52,621 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 187 flow. Second operand 9 states and 301 transitions. [2024-06-27 21:54:52,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 102 transitions, 489 flow [2024-06-27 21:54:52,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 102 transitions, 409 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 21:54:52,635 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 195 flow [2024-06-27 21:54:52,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=195, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2024-06-27 21:54:52,637 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-06-27 21:54:52,637 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 195 flow [2024-06-27 21:54:52,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:54:52,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:54:52,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:54:52,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 21:54:52,638 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)] === [2024-06-27 21:54:52,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:54:52,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1425958145, now seen corresponding path program 2 times [2024-06-27 21:54:52,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:54:52,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685161316] [2024-06-27 21:54:52,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:54:52,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:54:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:54:52,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:54:52,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:54:52,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685161316] [2024-06-27 21:54:52,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685161316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:54:52,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:54:52,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:54:52,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528907100] [2024-06-27 21:54:52,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:54:52,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:54:52,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:54:52,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:54:52,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:54:52,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 48 [2024-06-27 21:54:52,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:54:52,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:54:52,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 48 [2024-06-27 21:54:52,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:54:53,065 INFO L124 PetriNetUnfolderBase]: 765/1613 cut-off events. [2024-06-27 21:54:53,065 INFO L125 PetriNetUnfolderBase]: For 934/934 co-relation queries the response was YES. [2024-06-27 21:54:53,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3893 conditions, 1613 events. 765/1613 cut-off events. For 934/934 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10526 event pairs, 220 based on Foata normal form. 16/1499 useless extension candidates. Maximal degree in co-relation 3882. Up to 930 conditions per place. [2024-06-27 21:54:53,072 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2024-06-27 21:54:53,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 83 transitions, 418 flow [2024-06-27 21:54:53,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:54:53,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:54:53,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-06-27 21:54:53,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-06-27 21:54:53,074 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 195 flow. Second operand 7 states and 204 transitions. [2024-06-27 21:54:53,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 83 transitions, 418 flow [2024-06-27 21:54:53,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 83 transitions, 406 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 21:54:53,077 INFO L231 Difference]: Finished difference. Result has 65 places, 0 transitions, 0 flow [2024-06-27 21:54:53,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=65, PETRI_TRANSITIONS=0} [2024-06-27 21:54:53,078 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-06-27 21:54:53,078 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 0 transitions, 0 flow [2024-06-27 21:54:53,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:54:53,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 7 remaining) [2024-06-27 21:54:53,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-06-27 21:54:53,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-06-27 21:54:53,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-06-27 21:54:53,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-06-27 21:54:53,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-06-27 21:54:53,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2024-06-27 21:54:53,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 21:54:53,083 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-06-27 21:54:53,086 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 21:54:53,086 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 21:54:53,090 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-27 21:54:53,090 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-27 21:54:53,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 09:54:53 BasicIcfg [2024-06-27 21:54:53,091 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 21:54:53,091 INFO L158 Benchmark]: Toolchain (without parser) took 4671.23ms. Allocated memory was 184.5MB in the beginning and 245.4MB in the end (delta: 60.8MB). Free memory was 112.0MB in the beginning and 163.5MB in the end (delta: -51.5MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2024-06-27 21:54:53,091 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 184.5MB. Free memory is still 141.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:54:53,092 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 184.5MB. Free memory is still 158.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:54:53,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 583.67ms. Allocated memory is still 184.5MB. Free memory was 111.8MB in the beginning and 141.8MB in the end (delta: -30.0MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2024-06-27 21:54:53,092 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.17ms. Allocated memory is still 184.5MB. Free memory was 141.8MB in the beginning and 139.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 21:54:53,093 INFO L158 Benchmark]: Boogie Preprocessor took 46.66ms. Allocated memory is still 184.5MB. Free memory was 139.7MB in the beginning and 137.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 21:54:53,093 INFO L158 Benchmark]: RCFGBuilder took 366.36ms. Allocated memory is still 184.5MB. Free memory was 137.4MB in the beginning and 117.6MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-27 21:54:53,093 INFO L158 Benchmark]: TraceAbstraction took 3604.53ms. Allocated memory was 184.5MB in the beginning and 245.4MB in the end (delta: 60.8MB). Free memory was 116.7MB in the beginning and 163.5MB in the end (delta: -46.8MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2024-06-27 21:54:53,095 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 0.19ms. Allocated memory is still 184.5MB. Free memory is still 141.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 184.5MB. Free memory is still 158.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 583.67ms. Allocated memory is still 184.5MB. Free memory was 111.8MB in the beginning and 141.8MB in the end (delta: -30.0MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.17ms. Allocated memory is still 184.5MB. Free memory was 141.8MB in the beginning and 139.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.66ms. Allocated memory is still 184.5MB. Free memory was 139.7MB in the beginning and 137.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 366.36ms. Allocated memory is still 184.5MB. Free memory was 137.4MB in the beginning and 117.6MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3604.53ms. Allocated memory was 184.5MB in the beginning and 245.4MB in the end (delta: 60.8MB). Free memory was 116.7MB in the beginning and 163.5MB in the end (delta: -46.8MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 787]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 789]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 790]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 18]: 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, 75 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: 3.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 423 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 341 mSDsluCounter, 159 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 117 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 796 IncrementalHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 42 mSDtfsCounter, 796 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=8, InterpolantAutomatonStates: 46, 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, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 178 ConstructedInterpolants, 0 QuantifiedInterpolants, 778 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2024-06-27 21:54:53,119 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