./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/chl-poker-hand-symm.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c ./goblint.2024-06-19_11-23-25.files/protection/chl-poker-hand-symm.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 19:42:15,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:42:15,205 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:42:15,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:42:15,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:42:15,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:42:15,239 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:42:15,240 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:42:15,240 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:42:15,243 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:42:15,244 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:42:15,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:42:15,244 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:42:15,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:42:15,245 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:42:15,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:42:15,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:42:15,246 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:42:15,246 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:42:15,246 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:42:15,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:42:15,247 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:42:15,248 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:42:15,248 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:42:15,248 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:42:15,248 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:42:15,249 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:42:15,249 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:42:15,249 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:42:15,249 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:42:15,250 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:42:15,250 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:42:15,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:42:15,251 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:42:15,251 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:42:15,251 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:42:15,251 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:42:15,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:42:15,252 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:42:15,252 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:42:15,252 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:42:15,252 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:42:15,252 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:42:15,253 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 19:42:15,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:42:15,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:42:15,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:42:15,481 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:42:15,482 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:42:15,483 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/chl-poker-hand-symm.wvr.yml/witness.yml [2024-06-27 19:42:15,593 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:42:15,593 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:42:15,593 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-06-27 19:42:16,597 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:42:16,777 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:42:16,778 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-06-27 19:42:16,787 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/974bbd2e4/376dbeba015549d49cddc5631c15c11e/FLAG2473c428a [2024-06-27 19:42:16,802 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/974bbd2e4/376dbeba015549d49cddc5631c15c11e [2024-06-27 19:42:16,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:42:16,803 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:42:16,806 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:42:16,806 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:42:16,810 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:42:16,810 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:42:15" (1/2) ... [2024-06-27 19:42:16,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4af14a33 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:42:16, skipping insertion in model container [2024-06-27 19:42:16,811 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:42:15" (1/2) ... [2024-06-27 19:42:16,812 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@532eb0f1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:42:16, skipping insertion in model container [2024-06-27 19:42:16,812 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:42:16" (2/2) ... [2024-06-27 19:42:16,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4af14a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:42:16, skipping insertion in model container [2024-06-27 19:42:16,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:42:16" (2/2) ... [2024-06-27 19:42:16,814 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:42:16,836 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:42:16,837 INFO L97 edCorrectnessWitness]: Location invariant before [L230-L230] (((! multithreaded || 0 <= i1_9) && (! multithreaded || 0 <= i1_14)) && (! multithreaded || i2_16 == 0)) && (! multithreaded || i2_11 == 0) [2024-06-27 19:42:16,837 INFO L97 edCorrectnessWitness]: Location invariant before [L231-L231] (((! multithreaded || 0 <= i1_9) && (! multithreaded || 0 <= i1_14)) && (! multithreaded || i2_16 == 0)) && (! multithreaded || i2_11 == 0) [2024-06-27 19:42:16,838 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:42:16,838 INFO L106 edCorrectnessWitness]: ghost_update [L229-L229] multithreaded = 1; [2024-06-27 19:42:16,864 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:42:17,138 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:42:17,145 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:42:17,262 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:42:17,281 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:42:17,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:42:17 WrapperNode [2024-06-27 19:42:17,282 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:42:17,282 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:42:17,282 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:42:17,283 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:42:17,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:42:17" (1/1) ... [2024-06-27 19:42:17,310 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:42:17" (1/1) ... [2024-06-27 19:42:17,372 INFO L138 Inliner]: procedures = 24, calls = 298, calls flagged for inlining = 70, calls inlined = 98, statements flattened = 1566 [2024-06-27 19:42:17,372 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:42:17,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:42:17,373 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:42:17,373 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:42:17,382 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:42:17" (1/1) ... [2024-06-27 19:42:17,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:42:17" (1/1) ... [2024-06-27 19:42:17,387 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:42:17" (1/1) ... [2024-06-27 19:42:17,420 INFO L175 MemorySlicer]: Split 186 memory accesses to 2 slices as follows [2, 184]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 8 writes are split as follows [0, 8]. [2024-06-27 19:42:17,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:42:17" (1/1) ... [2024-06-27 19:42:17,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:42:17" (1/1) ... [2024-06-27 19:42:17,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:42:17" (1/1) ... [2024-06-27 19:42:17,488 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:42:17" (1/1) ... [2024-06-27 19:42:17,496 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:42:17" (1/1) ... [2024-06-27 19:42:17,503 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:42:17" (1/1) ... [2024-06-27 19:42:17,513 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:42:17,515 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:42:17,515 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:42:17,515 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:42:17,516 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:42:17" (1/1) ... [2024-06-27 19:42:17,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:42:17,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:42:17,663 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 19:42:17,682 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 19:42:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:42:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 19:42:17,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 19:42:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 19:42:17,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 19:42:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:42:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 19:42:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 19:42:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 19:42:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:42:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:42:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 19:42:17,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:42:17,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:42:17,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 19:42:17,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 19:42:17,701 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 19:42:17,863 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:42:17,864 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:42:18,965 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:42:18,966 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:42:20,091 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:42:20,091 INFO L320 CfgBuilder]: Removed 12 assume(true) statements. [2024-06-27 19:42:20,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:42:20 BoogieIcfgContainer [2024-06-27 19:42:20,092 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:42:20,093 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:42:20,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:42:20,096 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:42:20,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:42:15" (1/4) ... [2024-06-27 19:42:20,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3047c6d3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:42:20, skipping insertion in model container [2024-06-27 19:42:20,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:42:16" (2/4) ... [2024-06-27 19:42:20,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3047c6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:42:20, skipping insertion in model container [2024-06-27 19:42:20,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:42:17" (3/4) ... [2024-06-27 19:42:20,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3047c6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:42:20, skipping insertion in model container [2024-06-27 19:42:20,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:42:20" (4/4) ... [2024-06-27 19:42:20,098 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2024-06-27 19:42:20,113 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:42:20,113 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 19:42:20,113 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:42:20,342 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-27 19:42:20,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 97 transitions, 208 flow [2024-06-27 19:42:20,409 INFO L124 PetriNetUnfolderBase]: 28/95 cut-off events. [2024-06-27 19:42:20,409 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 19:42:20,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 28/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 251 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 75. Up to 7 conditions per place. [2024-06-27 19:42:20,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 97 transitions, 208 flow [2024-06-27 19:42:20,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 93 transitions, 195 flow [2024-06-27 19:42:20,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:42:20,428 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;@1d106909, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:42:20,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 19:42:20,435 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:42:20,436 INFO L124 PetriNetUnfolderBase]: 8/23 cut-off events. [2024-06-27 19:42:20,436 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:42:20,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:42:20,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:42:20,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:42:20,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:42:20,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1776879632, now seen corresponding path program 1 times [2024-06-27 19:42:20,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:42:20,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243595023] [2024-06-27 19:42:20,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:42:20,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:42:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:42:20,744 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 19:42:20,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:42:20,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243595023] [2024-06-27 19:42:20,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243595023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:42:20,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:42:20,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:42:20,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304214202] [2024-06-27 19:42:20,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:42:20,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:42:20,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:42:20,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:42:20,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:42:20,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 97 [2024-06-27 19:42:20,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 93 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:42:20,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:42:20,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 97 [2024-06-27 19:42:20,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:42:22,050 INFO L124 PetriNetUnfolderBase]: 2533/3824 cut-off events. [2024-06-27 19:42:22,050 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-06-27 19:42:22,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7696 conditions, 3824 events. 2533/3824 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18385 event pairs, 1725 based on Foata normal form. 0/3002 useless extension candidates. Maximal degree in co-relation 7511. Up to 3791 conditions per place. [2024-06-27 19:42:22,074 INFO L140 encePairwiseOnDemand]: 84/97 looper letters, 80 selfloop transitions, 8 changer transitions 1/93 dead transitions. [2024-06-27 19:42:22,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 93 transitions, 373 flow [2024-06-27 19:42:22,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:42:22,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:42:22,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-06-27 19:42:22,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951890034364261 [2024-06-27 19:42:22,088 INFO L175 Difference]: Start difference. First operand has 72 places, 93 transitions, 195 flow. Second operand 3 states and 115 transitions. [2024-06-27 19:42:22,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 93 transitions, 373 flow [2024-06-27 19:42:22,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 93 transitions, 368 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 19:42:22,095 INFO L231 Difference]: Finished difference. Result has 72 places, 92 transitions, 221 flow [2024-06-27 19:42:22,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=72, PETRI_TRANSITIONS=92} [2024-06-27 19:42:22,100 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2024-06-27 19:42:22,100 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 92 transitions, 221 flow [2024-06-27 19:42:22,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:42:22,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:42:22,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:42:22,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:42:22,102 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:42:22,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:42:22,102 INFO L85 PathProgramCache]: Analyzing trace with hash -768269484, now seen corresponding path program 1 times [2024-06-27 19:42:22,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:42:22,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300363031] [2024-06-27 19:42:22,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:42:22,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:42:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:42:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-27 19:42:22,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:42:22,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300363031] [2024-06-27 19:42:22,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300363031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:42:22,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:42:22,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:42:22,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872647989] [2024-06-27 19:42:22,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:42:22,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:42:22,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:42:22,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:42:22,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:42:22,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 97 [2024-06-27 19:42:22,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 92 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 19:42:22,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:42:22,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 97 [2024-06-27 19:42:22,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:42:23,625 INFO L124 PetriNetUnfolderBase]: 4038/6070 cut-off events. [2024-06-27 19:42:23,625 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-27 19:42:23,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12207 conditions, 6070 events. 4038/6070 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 31115 event pairs, 1914 based on Foata normal form. 576/5444 useless extension candidates. Maximal degree in co-relation 12158. Up to 3640 conditions per place. [2024-06-27 19:42:23,643 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 153 selfloop transitions, 3 changer transitions 0/158 dead transitions. [2024-06-27 19:42:23,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 158 transitions, 667 flow [2024-06-27 19:42:23,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:42:23,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:42:23,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-06-27 19:42:23,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.570446735395189 [2024-06-27 19:42:23,646 INFO L175 Difference]: Start difference. First operand has 72 places, 92 transitions, 221 flow. Second operand 3 states and 166 transitions. [2024-06-27 19:42:23,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 158 transitions, 667 flow [2024-06-27 19:42:23,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 158 transitions, 659 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:42:23,649 INFO L231 Difference]: Finished difference. Result has 73 places, 94 transitions, 234 flow [2024-06-27 19:42:23,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=73, PETRI_TRANSITIONS=94} [2024-06-27 19:42:23,650 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2024-06-27 19:42:23,650 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 94 transitions, 234 flow [2024-06-27 19:42:23,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 19:42:23,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:42:23,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:42:23,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:42:23,651 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:42:23,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:42:23,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2044946474, now seen corresponding path program 1 times [2024-06-27 19:42:23,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:42:23,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049479405] [2024-06-27 19:42:23,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:42:23,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:42:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:42:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-27 19:42:23,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:42:23,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049479405] [2024-06-27 19:42:23,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049479405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:42:23,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:42:23,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:42:23,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383853342] [2024-06-27 19:42:23,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:42:23,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:42:23,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:42:23,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:42:23,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:42:23,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 97 [2024-06-27 19:42:23,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 94 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 19:42:23,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:42:23,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 97 [2024-06-27 19:42:23,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:42:25,122 INFO L124 PetriNetUnfolderBase]: 3882/5872 cut-off events. [2024-06-27 19:42:25,122 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2024-06-27 19:42:25,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12304 conditions, 5872 events. 3882/5872 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 30376 event pairs, 1822 based on Foata normal form. 150/4860 useless extension candidates. Maximal degree in co-relation 12251. Up to 3640 conditions per place. [2024-06-27 19:42:25,135 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 114 selfloop transitions, 4 changer transitions 50/170 dead transitions. [2024-06-27 19:42:25,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 170 transitions, 726 flow [2024-06-27 19:42:25,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:42:25,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:42:25,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-06-27 19:42:25,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4690721649484536 [2024-06-27 19:42:25,138 INFO L175 Difference]: Start difference. First operand has 73 places, 94 transitions, 234 flow. Second operand 4 states and 182 transitions. [2024-06-27 19:42:25,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 170 transitions, 726 flow [2024-06-27 19:42:25,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 170 transitions, 723 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:42:25,141 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 201 flow [2024-06-27 19:42:25,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2024-06-27 19:42:25,142 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2024-06-27 19:42:25,142 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 201 flow [2024-06-27 19:42:25,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 19:42:25,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:42:25,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:42:25,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:42:25,143 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:42:25,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:42:25,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1571168492, now seen corresponding path program 1 times [2024-06-27 19:42:25,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:42:25,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425220772] [2024-06-27 19:42:25,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:42:25,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:42:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:42:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-27 19:42:25,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:42:25,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425220772] [2024-06-27 19:42:25,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425220772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:42:25,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:42:25,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:42:25,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270881580] [2024-06-27 19:42:25,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:42:25,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:42:25,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:42:25,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:42:25,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:42:25,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 97 [2024-06-27 19:42:25,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 201 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 19:42:25,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:42:25,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 97 [2024-06-27 19:42:25,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:42:25,914 INFO L124 PetriNetUnfolderBase]: 1752/2806 cut-off events. [2024-06-27 19:42:25,915 INFO L125 PetriNetUnfolderBase]: For 731/731 co-relation queries the response was YES. [2024-06-27 19:42:25,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6108 conditions, 2806 events. 1752/2806 cut-off events. For 731/731 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 13162 event pairs, 772 based on Foata normal form. 144/2514 useless extension candidates. Maximal degree in co-relation 6053. Up to 1324 conditions per place. [2024-06-27 19:42:25,924 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 68 selfloop transitions, 4 changer transitions 53/127 dead transitions. [2024-06-27 19:42:25,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 127 transitions, 569 flow [2024-06-27 19:42:25,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:42:25,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:42:25,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-06-27 19:42:25,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35309278350515466 [2024-06-27 19:42:25,927 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 201 flow. Second operand 4 states and 137 transitions. [2024-06-27 19:42:25,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 127 transitions, 569 flow [2024-06-27 19:42:25,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 127 transitions, 563 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:42:25,932 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 169 flow [2024-06-27 19:42:25,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-06-27 19:42:25,933 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -10 predicate places. [2024-06-27 19:42:25,933 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 169 flow [2024-06-27 19:42:25,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 19:42:25,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:42:25,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:42:25,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:42:25,934 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:42:25,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:42:25,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1153662620, now seen corresponding path program 1 times [2024-06-27 19:42:25,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:42:25,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398461580] [2024-06-27 19:42:25,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:42:25,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:42:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:42:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-27 19:42:26,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:42:26,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398461580] [2024-06-27 19:42:26,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398461580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:42:26,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:42:26,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:42:26,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721732594] [2024-06-27 19:42:26,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:42:26,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:42:26,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:42:26,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:42:26,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:42:26,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 97 [2024-06-27 19:42:26,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 19:42:26,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:42:26,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 97 [2024-06-27 19:42:26,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:42:26,309 INFO L124 PetriNetUnfolderBase]: 771/1326 cut-off events. [2024-06-27 19:42:26,309 INFO L125 PetriNetUnfolderBase]: For 355/375 co-relation queries the response was YES. [2024-06-27 19:42:26,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3039 conditions, 1326 events. 771/1326 cut-off events. For 355/375 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5522 event pairs, 670 based on Foata normal form. 1/1172 useless extension candidates. Maximal degree in co-relation 2979. Up to 1310 conditions per place. [2024-06-27 19:42:26,314 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 46 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2024-06-27 19:42:26,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 273 flow [2024-06-27 19:42:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:42:26,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:42:26,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-06-27 19:42:26,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.21305841924398625 [2024-06-27 19:42:26,315 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 169 flow. Second operand 3 states and 62 transitions. [2024-06-27 19:42:26,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 273 flow [2024-06-27 19:42:26,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 53 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:42:26,317 INFO L231 Difference]: Finished difference. Result has 48 places, 53 transitions, 185 flow [2024-06-27 19:42:26,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=48, PETRI_TRANSITIONS=53} [2024-06-27 19:42:26,317 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -24 predicate places. [2024-06-27 19:42:26,317 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 53 transitions, 185 flow [2024-06-27 19:42:26,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 19:42:26,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:42:26,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:42:26,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:42:26,318 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:42:26,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:42:26,319 INFO L85 PathProgramCache]: Analyzing trace with hash -74225717, now seen corresponding path program 1 times [2024-06-27 19:42:26,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:42:26,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751914538] [2024-06-27 19:42:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:42:26,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:42:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:42:26,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-06-27 19:42:26,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:42:26,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751914538] [2024-06-27 19:42:26,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751914538] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 19:42:26,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970999083] [2024-06-27 19:42:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:42:26,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 19:42:26,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:42:26,459 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 19:42:26,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 19:42:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:42:26,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 19:42:26,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 19:42:26,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-06-27 19:42:26,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 19:42:26,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-06-27 19:42:26,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970999083] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 19:42:26,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 19:42:26,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-06-27 19:42:26,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629311427] [2024-06-27 19:42:26,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 19:42:26,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:42:26,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:42:26,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:42:26,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:42:26,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 97 [2024-06-27 19:42:26,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 53 transitions, 185 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 19:42:26,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:42:26,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 97 [2024-06-27 19:42:26,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:42:27,281 INFO L124 PetriNetUnfolderBase]: 771/1344 cut-off events. [2024-06-27 19:42:27,281 INFO L125 PetriNetUnfolderBase]: For 265/285 co-relation queries the response was YES. [2024-06-27 19:42:27,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3061 conditions, 1344 events. 771/1344 cut-off events. For 265/285 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5516 event pairs, 670 based on Foata normal form. 6/1196 useless extension candidates. Maximal degree in co-relation 3026. Up to 1306 conditions per place. [2024-06-27 19:42:27,285 INFO L140 encePairwiseOnDemand]: 80/97 looper letters, 36 selfloop transitions, 32 changer transitions 0/71 dead transitions. [2024-06-27 19:42:27,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 71 transitions, 377 flow [2024-06-27 19:42:27,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:42:27,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:42:27,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-27 19:42:27,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.16752577319587628 [2024-06-27 19:42:27,288 INFO L175 Difference]: Start difference. First operand has 48 places, 53 transitions, 185 flow. Second operand 8 states and 130 transitions. [2024-06-27 19:42:27,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 71 transitions, 377 flow [2024-06-27 19:42:27,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 71 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:42:27,293 INFO L231 Difference]: Finished difference. Result has 58 places, 71 transitions, 365 flow [2024-06-27 19:42:27,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=365, PETRI_PLACES=58, PETRI_TRANSITIONS=71} [2024-06-27 19:42:27,296 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -14 predicate places. [2024-06-27 19:42:27,296 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 71 transitions, 365 flow [2024-06-27 19:42:27,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 19:42:27,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:42:27,297 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:42:27,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 19:42:27,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-06-27 19:42:27,520 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:42:27,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:42:27,520 INFO L85 PathProgramCache]: Analyzing trace with hash 207506772, now seen corresponding path program 1 times [2024-06-27 19:42:27,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:42:27,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279040684] [2024-06-27 19:42:27,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:42:27,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:42:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:42:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-06-27 19:42:27,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:42:27,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279040684] [2024-06-27 19:42:27,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279040684] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 19:42:27,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106669393] [2024-06-27 19:42:27,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:42:27,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 19:42:27,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:42:27,796 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 19:42:27,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 19:42:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:42:28,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-27 19:42:28,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 19:42:28,308 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-06-27 19:42:28,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 19:42:28,367 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-06-27 19:42:28,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106669393] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 19:42:28,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 19:42:28,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-06-27 19:42:28,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238707446] [2024-06-27 19:42:28,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 19:42:28,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-06-27 19:42:28,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:42:28,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-06-27 19:42:28,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2024-06-27 19:42:28,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 97 [2024-06-27 19:42:28,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 71 transitions, 365 flow. Second operand has 17 states, 17 states have (on average 8.882352941176471) internal successors, (151), 17 states have internal predecessors, (151), 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 19:42:28,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:42:28,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 97 [2024-06-27 19:42:28,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:42:28,766 INFO L124 PetriNetUnfolderBase]: 771/1356 cut-off events. [2024-06-27 19:42:28,766 INFO L125 PetriNetUnfolderBase]: For 284/304 co-relation queries the response was YES. [2024-06-27 19:42:28,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3173 conditions, 1356 events. 771/1356 cut-off events. For 284/304 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5521 event pairs, 670 based on Foata normal form. 11/1218 useless extension candidates. Maximal degree in co-relation 3095. Up to 1306 conditions per place. [2024-06-27 19:42:28,771 INFO L140 encePairwiseOnDemand]: 80/97 looper letters, 36 selfloop transitions, 44 changer transitions 0/83 dead transitions. [2024-06-27 19:42:28,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 83 transitions, 593 flow [2024-06-27 19:42:28,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 19:42:28,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 19:42:28,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 184 transitions. [2024-06-27 19:42:28,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.11855670103092783 [2024-06-27 19:42:28,773 INFO L175 Difference]: Start difference. First operand has 58 places, 71 transitions, 365 flow. Second operand 16 states and 184 transitions. [2024-06-27 19:42:28,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 83 transitions, 593 flow [2024-06-27 19:42:28,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 555 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-27 19:42:28,777 INFO L231 Difference]: Finished difference. Result has 73 places, 83 transitions, 509 flow [2024-06-27 19:42:28,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=509, PETRI_PLACES=73, PETRI_TRANSITIONS=83} [2024-06-27 19:42:28,777 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2024-06-27 19:42:28,777 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 83 transitions, 509 flow [2024-06-27 19:42:28,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.882352941176471) internal successors, (151), 17 states have internal predecessors, (151), 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 19:42:28,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:42:28,778 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:42:28,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-27 19:42:28,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-06-27 19:42:28,991 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:42:28,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:42:28,992 INFO L85 PathProgramCache]: Analyzing trace with hash -356004322, now seen corresponding path program 2 times [2024-06-27 19:42:28,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:42:28,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070024833] [2024-06-27 19:42:28,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:42:28,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:42:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:42:29,263 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-27 19:42:29,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:42:29,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070024833] [2024-06-27 19:42:29,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070024833] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 19:42:29,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735631899] [2024-06-27 19:42:29,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 19:42:29,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 19:42:29,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:42:29,266 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 19:42:29,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 19:42:29,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-27 19:42:29,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 19:42:29,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 19:42:29,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 19:42:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-06-27 19:42:29,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 19:42:29,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735631899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:42:29,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 19:42:29,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2024-06-27 19:42:29,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918997398] [2024-06-27 19:42:29,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:42:29,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:42:29,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:42:29,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:42:29,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:42:29,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 97 [2024-06-27 19:42:29,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 83 transitions, 509 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:42:29,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:42:29,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 97 [2024-06-27 19:42:29,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:42:30,380 INFO L124 PetriNetUnfolderBase]: 837/1458 cut-off events. [2024-06-27 19:42:30,380 INFO L125 PetriNetUnfolderBase]: For 633/633 co-relation queries the response was YES. [2024-06-27 19:42:30,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3407 conditions, 1458 events. 837/1458 cut-off events. For 633/633 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6140 event pairs, 382 based on Foata normal form. 72/1380 useless extension candidates. Maximal degree in co-relation 3330. Up to 750 conditions per place. [2024-06-27 19:42:30,384 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 0 selfloop transitions, 0 changer transitions 113/113 dead transitions. [2024-06-27 19:42:30,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 113 transitions, 799 flow [2024-06-27 19:42:30,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:42:30,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:42:30,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-27 19:42:30,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19381443298969073 [2024-06-27 19:42:30,401 INFO L175 Difference]: Start difference. First operand has 73 places, 83 transitions, 509 flow. Second operand 5 states and 94 transitions. [2024-06-27 19:42:30,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 113 transitions, 799 flow [2024-06-27 19:42:30,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 113 transitions, 685 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 19:42:30,404 INFO L231 Difference]: Finished difference. Result has 68 places, 0 transitions, 0 flow [2024-06-27 19:42:30,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=68, PETRI_TRANSITIONS=0} [2024-06-27 19:42:30,404 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2024-06-27 19:42:30,404 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 0 transitions, 0 flow [2024-06-27 19:42:30,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:42:30,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 19:42:30,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 19:42:30,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 19:42:30,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 19:42:30,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-27 19:42:30,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 19:42:30,623 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-06-27 19:42:30,625 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 19:42:30,625 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 19:42:30,628 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 19:42:30,628 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 19:42:30,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 07:42:30 BasicIcfg [2024-06-27 19:42:30,629 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 19:42:30,629 INFO L158 Benchmark]: Toolchain (without parser) took 13826.20ms. Allocated memory was 151.0MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 78.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 975.2MB. Max. memory is 16.1GB. [2024-06-27 19:42:30,630 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 109.1MB. Free memory was 69.2MB in the beginning and 69.2MB in the end (delta: 73.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 19:42:30,630 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 151.0MB. Free memory is still 124.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 19:42:30,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 476.06ms. Allocated memory is still 151.0MB. Free memory was 78.4MB in the beginning and 110.9MB in the end (delta: -32.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-27 19:42:30,630 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.25ms. Allocated memory is still 151.0MB. Free memory was 110.9MB in the beginning and 102.6MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-06-27 19:42:30,631 INFO L158 Benchmark]: Boogie Preprocessor took 140.73ms. Allocated memory is still 151.0MB. Free memory was 102.6MB in the beginning and 92.0MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-06-27 19:42:30,631 INFO L158 Benchmark]: RCFGBuilder took 2577.30ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 92.0MB in the beginning and 79.4MB in the end (delta: 12.6MB). Peak memory consumption was 111.0MB. Max. memory is 16.1GB. [2024-06-27 19:42:30,631 INFO L158 Benchmark]: TraceAbstraction took 10536.03ms. Allocated memory was 220.2MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 79.4MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 905.8MB. Max. memory is 16.1GB. [2024-06-27 19:42:30,632 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 109.1MB. Free memory was 69.2MB in the beginning and 69.2MB in the end (delta: 73.7kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 151.0MB. Free memory is still 124.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 476.06ms. Allocated memory is still 151.0MB. Free memory was 78.4MB in the beginning and 110.9MB in the end (delta: -32.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.25ms. Allocated memory is still 151.0MB. Free memory was 110.9MB in the beginning and 102.6MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 140.73ms. Allocated memory is still 151.0MB. Free memory was 102.6MB in the beginning and 92.0MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 2577.30ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 92.0MB in the beginning and 79.4MB in the end (delta: 12.6MB). Peak memory consumption was 111.0MB. Max. memory is 16.1GB. * TraceAbstraction took 10536.03ms. Allocated memory was 220.2MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 79.4MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 905.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 230]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 231]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 120 locations, 4 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: 10.3s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 397 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 385 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1502 IncrementalHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 2 mSDtfsCounter, 1502 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=509occurred in iteration=7, 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: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 411 NumberOfCodeBlocks, 375 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 484 ConstructedInterpolants, 0 QuantifiedInterpolants, 1695 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1386 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 342/390 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 19:42:30,662 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