./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe004_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe004_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 16:43:53,660 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:43:53,727 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:43:53,730 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:43:53,731 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:43:53,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:43:53,747 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:43:53,748 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:43:53,749 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:43:53,752 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:43:53,752 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:43:53,752 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:43:53,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:43:53,754 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:43:53,755 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:43:53,755 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:43:53,755 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:43:53,755 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:43:53,755 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:43:53,756 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:43:53,756 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:43:53,756 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:43:53,757 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:43:53,757 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:43:53,757 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:43:53,757 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:43:53,757 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:43:53,758 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:43:53,758 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:43:53,758 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:43:53,759 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:43:53,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:43:53,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:43:53,760 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:43:53,760 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:43:53,760 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:43:53,761 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:43:53,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:43:53,761 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:43:53,761 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:43:53,761 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:43:53,762 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:43:53,762 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:43:53,762 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:43:54,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:43:54,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:43:54,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:43:54,034 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:43:54,035 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:43:54,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe004_tso.yml/witness.yml [2024-01-31 16:43:54,291 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:43:54,293 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:43:54,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.i [2024-01-31 16:43:55,357 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:43:55,683 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:43:55,684 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i [2024-01-31 16:43:55,702 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdcd55aaf/0ab41a66f8064b95bf259e606089fa25/FLAG3795fe012 [2024-01-31 16:43:55,717 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdcd55aaf/0ab41a66f8064b95bf259e606089fa25 [2024-01-31 16:43:55,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:43:55,719 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:43:55,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:43:55,720 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:43:55,724 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:43:55,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:43:54" (1/2) ... [2024-01-31 16:43:55,734 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60cb3625 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:55, skipping insertion in model container [2024-01-31 16:43:55,735 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:43:54" (1/2) ... [2024-01-31 16:43:55,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c725239 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:55, skipping insertion in model container [2024-01-31 16:43:55,736 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:43:55" (2/2) ... [2024-01-31 16:43:55,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60cb3625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:55, skipping insertion in model container [2024-01-31 16:43:55,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:43:55" (2/2) ... [2024-01-31 16:43:55,738 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:43:56,124 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:43:56,126 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 16:43:56,126 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 16:43:56,179 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:43:56,374 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i[945,958] [2024-01-31 16:43:56,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:43:56,561 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:43:56,574 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i[945,958] Start Parsing Local [2024-01-31 16:43:56,609 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 16:43:56,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:43:56,686 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:43:56,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:56 WrapperNode [2024-01-31 16:43:56,687 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:43:56,688 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:43:56,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:43:56,688 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:43:56,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:56" (1/1) ... [2024-01-31 16:43:56,710 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:56" (1/1) ... [2024-01-31 16:43:56,725 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2024-01-31 16:43:56,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:43:56,726 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:43:56,726 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:43:56,726 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:43:56,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:56" (1/1) ... [2024-01-31 16:43:56,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:56" (1/1) ... [2024-01-31 16:43:56,737 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:56" (1/1) ... [2024-01-31 16:43:56,747 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-31 16:43:56,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:56" (1/1) ... [2024-01-31 16:43:56,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:56" (1/1) ... [2024-01-31 16:43:56,753 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:56" (1/1) ... [2024-01-31 16:43:56,754 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:56" (1/1) ... [2024-01-31 16:43:56,755 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:56" (1/1) ... [2024-01-31 16:43:56,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:56" (1/1) ... [2024-01-31 16:43:56,757 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:43:56,758 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:43:56,758 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:43:56,758 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:43:56,759 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:56" (1/1) ... [2024-01-31 16:43:56,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:43:56,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:43:56,781 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) [2024-01-31 16:43:56,788 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 [2024-01-31 16:43:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:43:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:43:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:43:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:43:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:43:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:43:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:43:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:43:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 16:43:56,810 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 16:43:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 16:43:56,811 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 16:43:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 16:43:56,811 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 16:43:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:43:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:43:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:43:56,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:43:56,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:43:56,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:43:56,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:43:56,813 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:43:56,949 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:43:56,950 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:43:57,074 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:43:57,075 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:43:57,171 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:43:57,171 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:43:57,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:43:57 BoogieIcfgContainer [2024-01-31 16:43:57,172 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:43:57,173 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:43:57,173 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:43:57,176 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:43:57,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:43:54" (1/4) ... [2024-01-31 16:43:57,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730bdc7d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:43:57, skipping insertion in model container [2024-01-31 16:43:57,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:43:55" (2/4) ... [2024-01-31 16:43:57,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730bdc7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:43:57, skipping insertion in model container [2024-01-31 16:43:57,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:56" (3/4) ... [2024-01-31 16:43:57,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730bdc7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:43:57, skipping insertion in model container [2024-01-31 16:43:57,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:43:57" (4/4) ... [2024-01-31 16:43:57,178 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_tso.i [2024-01-31 16:43:57,191 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:43:57,192 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-31 16:43:57,192 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:43:57,221 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:43:57,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 92 flow [2024-01-31 16:43:57,265 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-01-31 16:43:57,266 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:43:57,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 1/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-01-31 16:43:57,268 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 92 flow [2024-01-31 16:43:57,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2024-01-31 16:43:57,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:43:57,283 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;@344fe1de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:43:57,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-31 16:43:57,293 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:43:57,294 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-01-31 16:43:57,294 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:43:57,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:57,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:57,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:57,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:57,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1116065905, now seen corresponding path program 1 times [2024-01-31 16:43:57,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:57,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924932580] [2024-01-31 16:43:57,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:57,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:57,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:57,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924932580] [2024-01-31 16:43:57,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924932580] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:57,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:57,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:43:57,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707133029] [2024-01-31 16:43:57,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:57,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:43:57,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:57,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:43:57,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:43:57,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2024-01-31 16:43:57,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2024-01-31 16:43:57,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:57,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2024-01-31 16:43:57,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:57,711 INFO L124 PetriNetUnfolderBase]: 75/203 cut-off events. [2024-01-31 16:43:57,711 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:43:57,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 203 events. 75/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1041 event pairs, 51 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 347. Up to 97 conditions per place. [2024-01-31 16:43:57,716 INFO L140 encePairwiseOnDemand]: 38/40 looper letters, 16 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2024-01-31 16:43:57,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 115 flow [2024-01-31 16:43:57,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:43:57,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:43:57,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-01-31 16:43:57,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-01-31 16:43:57,728 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 3 states and 84 transitions. [2024-01-31 16:43:57,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 115 flow [2024-01-31 16:43:57,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 36 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:43:57,735 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 74 flow [2024-01-31 16:43:57,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-01-31 16:43:57,741 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2024-01-31 16:43:57,741 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 74 flow [2024-01-31 16:43:57,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2024-01-31 16:43:57,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:57,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:57,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:43:57,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:57,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:57,745 INFO L85 PathProgramCache]: Analyzing trace with hash 238304887, now seen corresponding path program 1 times [2024-01-31 16:43:57,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:57,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959241918] [2024-01-31 16:43:57,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:57,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:58,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:58,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:58,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959241918] [2024-01-31 16:43:58,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959241918] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:58,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:58,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:43:58,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020292200] [2024-01-31 16:43:58,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:58,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:43:58,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:58,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:43:58,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:43:58,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-01-31 16:43:58,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-01-31 16:43:58,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:58,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-01-31 16:43:58,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:58,461 INFO L124 PetriNetUnfolderBase]: 1685/2930 cut-off events. [2024-01-31 16:43:58,461 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-01-31 16:43:58,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5587 conditions, 2930 events. 1685/2930 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 19347 event pairs, 621 based on Foata normal form. 89/2959 useless extension candidates. Maximal degree in co-relation 5578. Up to 1416 conditions per place. [2024-01-31 16:43:58,479 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 32 selfloop transitions, 7 changer transitions 39/90 dead transitions. [2024-01-31 16:43:58,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 90 transitions, 350 flow [2024-01-31 16:43:58,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:43:58,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:43:58,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-01-31 16:43:58,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6607142857142857 [2024-01-31 16:43:58,486 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 74 flow. Second operand 7 states and 185 transitions. [2024-01-31 16:43:58,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 90 transitions, 350 flow [2024-01-31 16:43:58,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 90 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:43:58,496 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 159 flow [2024-01-31 16:43:58,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2024-01-31 16:43:58,497 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2024-01-31 16:43:58,500 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 159 flow [2024-01-31 16:43:58,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-01-31 16:43:58,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:58,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:58,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:43:58,501 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:58,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:58,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1682760888, now seen corresponding path program 1 times [2024-01-31 16:43:58,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:58,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160168702] [2024-01-31 16:43:58,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:58,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:58,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:58,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160168702] [2024-01-31 16:43:58,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160168702] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:58,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:58,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:43:58,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449509460] [2024-01-31 16:43:58,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:58,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:43:58,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:58,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:43:58,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:43:58,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-01-31 16:43:58,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-01-31 16:43:58,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:58,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-01-31 16:43:58,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:58,997 INFO L124 PetriNetUnfolderBase]: 1386/2547 cut-off events. [2024-01-31 16:43:58,997 INFO L125 PetriNetUnfolderBase]: For 3599/3606 co-relation queries the response was YES. [2024-01-31 16:43:59,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7838 conditions, 2547 events. 1386/2547 cut-off events. For 3599/3606 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 16911 event pairs, 182 based on Foata normal form. 68/2606 useless extension candidates. Maximal degree in co-relation 7822. Up to 1258 conditions per place. [2024-01-31 16:43:59,007 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 41 selfloop transitions, 11 changer transitions 48/112 dead transitions. [2024-01-31 16:43:59,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 112 transitions, 728 flow [2024-01-31 16:43:59,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:43:59,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:43:59,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2024-01-31 16:43:59,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6075 [2024-01-31 16:43:59,010 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 159 flow. Second operand 10 states and 243 transitions. [2024-01-31 16:43:59,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 112 transitions, 728 flow [2024-01-31 16:43:59,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 112 transitions, 662 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-31 16:43:59,017 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 249 flow [2024-01-31 16:43:59,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=249, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2024-01-31 16:43:59,018 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 21 predicate places. [2024-01-31 16:43:59,018 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 249 flow [2024-01-31 16:43:59,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-01-31 16:43:59,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:59,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:59,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:43:59,019 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:59,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:59,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1345560298, now seen corresponding path program 1 times [2024-01-31 16:43:59,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:59,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107721999] [2024-01-31 16:43:59,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:59,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:59,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:59,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107721999] [2024-01-31 16:43:59,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107721999] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:59,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:59,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:43:59,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585008901] [2024-01-31 16:43:59,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:59,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:43:59,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:59,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:43:59,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:43:59,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-01-31 16:43:59,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-01-31 16:43:59,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:59,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-01-31 16:43:59,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:59,377 INFO L124 PetriNetUnfolderBase]: 1052/1991 cut-off events. [2024-01-31 16:43:59,378 INFO L125 PetriNetUnfolderBase]: For 6424/6441 co-relation queries the response was YES. [2024-01-31 16:43:59,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6952 conditions, 1991 events. 1052/1991 cut-off events. For 6424/6441 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12880 event pairs, 227 based on Foata normal form. 67/2038 useless extension candidates. Maximal degree in co-relation 6927. Up to 586 conditions per place. [2024-01-31 16:43:59,389 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 40 selfloop transitions, 11 changer transitions 54/117 dead transitions. [2024-01-31 16:43:59,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 117 transitions, 944 flow [2024-01-31 16:43:59,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:43:59,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:43:59,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 232 transitions. [2024-01-31 16:43:59,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-01-31 16:43:59,391 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 249 flow. Second operand 10 states and 232 transitions. [2024-01-31 16:43:59,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 117 transitions, 944 flow [2024-01-31 16:43:59,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 117 transitions, 870 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-01-31 16:43:59,406 INFO L231 Difference]: Finished difference. Result has 72 places, 49 transitions, 327 flow [2024-01-31 16:43:59,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=327, PETRI_PLACES=72, PETRI_TRANSITIONS=49} [2024-01-31 16:43:59,407 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2024-01-31 16:43:59,407 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 49 transitions, 327 flow [2024-01-31 16:43:59,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-01-31 16:43:59,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:59,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:59,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:43:59,409 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:59,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:59,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1771537567, now seen corresponding path program 1 times [2024-01-31 16:43:59,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:59,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836215795] [2024-01-31 16:43:59,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:59,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:59,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:59,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836215795] [2024-01-31 16:43:59,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836215795] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:59,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:59,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:43:59,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997240653] [2024-01-31 16:43:59,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:59,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:43:59,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:59,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:43:59,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:43:59,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-01-31 16:43:59,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 49 transitions, 327 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-01-31 16:43:59,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:59,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-01-31 16:43:59,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:59,778 INFO L124 PetriNetUnfolderBase]: 987/1954 cut-off events. [2024-01-31 16:43:59,779 INFO L125 PetriNetUnfolderBase]: For 5878/5884 co-relation queries the response was YES. [2024-01-31 16:43:59,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6878 conditions, 1954 events. 987/1954 cut-off events. For 5878/5884 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13326 event pairs, 148 based on Foata normal form. 36/1947 useless extension candidates. Maximal degree in co-relation 6847. Up to 593 conditions per place. [2024-01-31 16:43:59,789 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 38 selfloop transitions, 10 changer transitions 56/116 dead transitions. [2024-01-31 16:43:59,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 116 transitions, 1040 flow [2024-01-31 16:43:59,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:43:59,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:43:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-01-31 16:43:59,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2024-01-31 16:43:59,791 INFO L175 Difference]: Start difference. First operand has 72 places, 49 transitions, 327 flow. Second operand 9 states and 213 transitions. [2024-01-31 16:43:59,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 116 transitions, 1040 flow [2024-01-31 16:43:59,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 116 transitions, 986 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-01-31 16:43:59,802 INFO L231 Difference]: Finished difference. Result has 75 places, 42 transitions, 291 flow [2024-01-31 16:43:59,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=291, PETRI_PLACES=75, PETRI_TRANSITIONS=42} [2024-01-31 16:43:59,803 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2024-01-31 16:43:59,803 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 42 transitions, 291 flow [2024-01-31 16:43:59,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-01-31 16:43:59,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:59,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:59,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:43:59,804 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:59,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:59,804 INFO L85 PathProgramCache]: Analyzing trace with hash 714634204, now seen corresponding path program 1 times [2024-01-31 16:43:59,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:59,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553701584] [2024-01-31 16:43:59,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:59,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:59,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:59,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553701584] [2024-01-31 16:43:59,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553701584] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:59,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:59,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:43:59,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095947001] [2024-01-31 16:43:59,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:59,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:43:59,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:59,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:43:59,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:43:59,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-01-31 16:43:59,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 42 transitions, 291 flow. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 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) [2024-01-31 16:43:59,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:59,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-01-31 16:43:59,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:00,152 INFO L124 PetriNetUnfolderBase]: 404/884 cut-off events. [2024-01-31 16:44:00,153 INFO L125 PetriNetUnfolderBase]: For 3018/3018 co-relation queries the response was YES. [2024-01-31 16:44:00,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2967 conditions, 884 events. 404/884 cut-off events. For 3018/3018 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5419 event pairs, 52 based on Foata normal form. 22/893 useless extension candidates. Maximal degree in co-relation 2933. Up to 178 conditions per place. [2024-01-31 16:44:00,157 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 29 selfloop transitions, 5 changer transitions 52/98 dead transitions. [2024-01-31 16:44:00,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 98 transitions, 744 flow [2024-01-31 16:44:00,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:44:00,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:44:00,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 246 transitions. [2024-01-31 16:44:00,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5590909090909091 [2024-01-31 16:44:00,158 INFO L175 Difference]: Start difference. First operand has 75 places, 42 transitions, 291 flow. Second operand 11 states and 246 transitions. [2024-01-31 16:44:00,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 98 transitions, 744 flow [2024-01-31 16:44:00,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 98 transitions, 625 flow, removed 33 selfloop flow, removed 13 redundant places. [2024-01-31 16:44:00,163 INFO L231 Difference]: Finished difference. Result has 74 places, 33 transitions, 165 flow [2024-01-31 16:44:00,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=165, PETRI_PLACES=74, PETRI_TRANSITIONS=33} [2024-01-31 16:44:00,163 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 30 predicate places. [2024-01-31 16:44:00,164 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 33 transitions, 165 flow [2024-01-31 16:44:00,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 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) [2024-01-31 16:44:00,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:00,164 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] [2024-01-31 16:44:00,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:44:00,164 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:44:00,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:00,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1750956258, now seen corresponding path program 1 times [2024-01-31 16:44:00,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:00,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987372094] [2024-01-31 16:44:00,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:00,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:00,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:44:00,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:00,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987372094] [2024-01-31 16:44:00,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987372094] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:00,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:00,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:44:00,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765783413] [2024-01-31 16:44:00,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:00,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:44:00,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:00,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:44:00,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:44:00,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2024-01-31 16:44:00,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 33 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-01-31 16:44:00,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:00,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2024-01-31 16:44:00,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:00,336 INFO L124 PetriNetUnfolderBase]: 282/556 cut-off events. [2024-01-31 16:44:00,337 INFO L125 PetriNetUnfolderBase]: For 379/381 co-relation queries the response was YES. [2024-01-31 16:44:00,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1271 conditions, 556 events. 282/556 cut-off events. For 379/381 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2796 event pairs, 126 based on Foata normal form. 27/549 useless extension candidates. Maximal degree in co-relation 1241. Up to 261 conditions per place. [2024-01-31 16:44:00,339 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 21 selfloop transitions, 4 changer transitions 4/46 dead transitions. [2024-01-31 16:44:00,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 46 transitions, 251 flow [2024-01-31 16:44:00,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:44:00,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:44:00,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-01-31 16:44:00,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.74375 [2024-01-31 16:44:00,340 INFO L175 Difference]: Start difference. First operand has 74 places, 33 transitions, 165 flow. Second operand 4 states and 119 transitions. [2024-01-31 16:44:00,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 46 transitions, 251 flow [2024-01-31 16:44:00,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 180 flow, removed 16 selfloop flow, removed 21 redundant places. [2024-01-31 16:44:00,343 INFO L231 Difference]: Finished difference. Result has 52 places, 35 transitions, 122 flow [2024-01-31 16:44:00,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=52, PETRI_TRANSITIONS=35} [2024-01-31 16:44:00,344 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2024-01-31 16:44:00,344 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 122 flow [2024-01-31 16:44:00,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-01-31 16:44:00,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:00,345 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] [2024-01-31 16:44:00,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:44:00,345 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:44:00,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:00,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1649799225, now seen corresponding path program 1 times [2024-01-31 16:44:00,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:00,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176526690] [2024-01-31 16:44:00,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:00,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:00,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:44:00,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:00,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176526690] [2024-01-31 16:44:00,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176526690] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:00,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:00,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:44:00,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562139555] [2024-01-31 16:44:00,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:00,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:44:00,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:00,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:44:00,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:44:00,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2024-01-31 16:44:00,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 35 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2024-01-31 16:44:00,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:00,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2024-01-31 16:44:00,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:00,531 INFO L124 PetriNetUnfolderBase]: 202/425 cut-off events. [2024-01-31 16:44:00,531 INFO L125 PetriNetUnfolderBase]: For 150/201 co-relation queries the response was YES. [2024-01-31 16:44:00,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 425 events. 202/425 cut-off events. For 150/201 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1949 event pairs, 22 based on Foata normal form. 27/432 useless extension candidates. Maximal degree in co-relation 1002. Up to 161 conditions per place. [2024-01-31 16:44:00,532 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 20 selfloop transitions, 6 changer transitions 8/51 dead transitions. [2024-01-31 16:44:00,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 239 flow [2024-01-31 16:44:00,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:44:00,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:44:00,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-01-31 16:44:00,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.73 [2024-01-31 16:44:00,534 INFO L175 Difference]: Start difference. First operand has 52 places, 35 transitions, 122 flow. Second operand 5 states and 146 transitions. [2024-01-31 16:44:00,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 239 flow [2024-01-31 16:44:00,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 51 transitions, 226 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:44:00,535 INFO L231 Difference]: Finished difference. Result has 55 places, 35 transitions, 136 flow [2024-01-31 16:44:00,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=55, PETRI_TRANSITIONS=35} [2024-01-31 16:44:00,537 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2024-01-31 16:44:00,537 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 35 transitions, 136 flow [2024-01-31 16:44:00,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2024-01-31 16:44:00,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:00,537 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] [2024-01-31 16:44:00,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:44:00,537 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:44:00,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:00,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1702595014, now seen corresponding path program 1 times [2024-01-31 16:44:00,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:00,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982128084] [2024-01-31 16:44:00,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:00,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:44:00,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:00,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982128084] [2024-01-31 16:44:00,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982128084] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:00,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:00,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:44:00,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458563270] [2024-01-31 16:44:00,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:00,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:44:00,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:00,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:44:00,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:44:00,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2024-01-31 16:44:00,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 35 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:00,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:00,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2024-01-31 16:44:00,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:00,705 INFO L124 PetriNetUnfolderBase]: 80/171 cut-off events. [2024-01-31 16:44:00,705 INFO L125 PetriNetUnfolderBase]: For 175/206 co-relation queries the response was YES. [2024-01-31 16:44:00,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 171 events. 80/171 cut-off events. For 175/206 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 495 event pairs, 2 based on Foata normal form. 16/180 useless extension candidates. Maximal degree in co-relation 447. Up to 56 conditions per place. [2024-01-31 16:44:00,705 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2024-01-31 16:44:00,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 43 transitions, 215 flow [2024-01-31 16:44:00,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:44:00,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:44:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-01-31 16:44:00,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-01-31 16:44:00,707 INFO L175 Difference]: Start difference. First operand has 55 places, 35 transitions, 136 flow. Second operand 6 states and 164 transitions. [2024-01-31 16:44:00,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 43 transitions, 215 flow [2024-01-31 16:44:00,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 190 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-31 16:44:00,707 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-01-31 16:44:00,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-01-31 16:44:00,708 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2024-01-31 16:44:00,708 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-01-31 16:44:00,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:00,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-01-31 16:44:00,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-01-31 16:44:00,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-01-31 16:44:00,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-01-31 16:44:00,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-01-31 16:44:00,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:44:00,714 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:00,717 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:44:00,717 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:44:00,721 INFO L503 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-01-31 16:44:00,721 INFO L504 ceAbstractionStarter]: WitnessConsidered=1 [2024-01-31 16:44:00,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:44:00 BasicIcfg [2024-01-31 16:44:00,722 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:44:00,723 INFO L158 Benchmark]: Toolchain (without parser) took 5004.15ms. Allocated memory was 192.9MB in the beginning and 285.2MB in the end (delta: 92.3MB). Free memory was 153.7MB in the beginning and 92.7MB in the end (delta: 61.0MB). Peak memory consumption was 156.5MB. Max. memory is 16.1GB. [2024-01-31 16:44:00,723 INFO L158 Benchmark]: Witness Parser took 0.24ms. Allocated memory is still 96.5MB. Free memory was 41.4MB in the beginning and 41.3MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:44:00,723 INFO L158 Benchmark]: CDTParser took 0.78ms. Allocated memory is still 192.9MB. Free memory is still 147.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:44:00,723 INFO L158 Benchmark]: CACSL2BoogieTranslator took 967.55ms. Allocated memory is still 192.9MB. Free memory was 153.7MB in the beginning and 65.6MB in the end (delta: 88.1MB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. [2024-01-31 16:44:00,723 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.59ms. Allocated memory is still 192.9MB. Free memory was 65.6MB in the beginning and 63.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:44:00,723 INFO L158 Benchmark]: Boogie Preprocessor took 31.48ms. Allocated memory is still 192.9MB. Free memory was 63.5MB in the beginning and 61.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:44:00,724 INFO L158 Benchmark]: RCFGBuilder took 413.88ms. Allocated memory was 192.9MB in the beginning and 285.2MB in the end (delta: 92.3MB). Free memory was 61.4MB in the beginning and 237.6MB in the end (delta: -176.2MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2024-01-31 16:44:00,724 INFO L158 Benchmark]: TraceAbstraction took 3549.12ms. Allocated memory is still 285.2MB. Free memory was 236.5MB in the beginning and 92.7MB in the end (delta: 143.9MB). Peak memory consumption was 144.9MB. Max. memory is 16.1GB. [2024-01-31 16:44:00,725 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 0.24ms. Allocated memory is still 96.5MB. Free memory was 41.4MB in the beginning and 41.3MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.78ms. Allocated memory is still 192.9MB. Free memory is still 147.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 967.55ms. Allocated memory is still 192.9MB. Free memory was 153.7MB in the beginning and 65.6MB in the end (delta: 88.1MB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.59ms. Allocated memory is still 192.9MB. Free memory was 65.6MB in the beginning and 63.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.48ms. Allocated memory is still 192.9MB. Free memory was 63.5MB in the beginning and 61.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 413.88ms. Allocated memory was 192.9MB in the beginning and 285.2MB in the end (delta: 92.3MB). Free memory was 61.4MB in the beginning and 237.6MB in the end (delta: -176.2MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3549.12ms. Allocated memory is still 285.2MB. Free memory was 236.5MB in the beginning and 92.7MB in the end (delta: 143.9MB). Peak memory consumption was 144.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 64 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 428 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 398 mSDsluCounter, 318 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 227 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 778 IncrementalHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 91 mSDtfsCounter, 778 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=327occurred in iteration=4, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 171 ConstructedInterpolants, 0 QuantifiedInterpolants, 713 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-31 16:44:00,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE