./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_9.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_9.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 04dc39fb366d4472036345a213cca0ee8b355c41bc9af7e685ecaa2d36ed9484 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:00:38,318 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:00:38,386 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 16:00:38,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:00:38,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:00:38,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:00:38,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:00:38,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:00:38,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:00:38,419 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:00:38,419 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:00:38,420 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:00:38,420 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:00:38,421 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:00:38,421 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:00:38,422 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:00:38,422 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:00:38,423 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:00:38,423 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:00:38,424 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:00:38,424 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:00:38,425 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:00:38,426 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 16:00:38,426 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 16:00:38,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:00:38,427 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:00:38,428 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:00:38,428 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:00:38,428 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:00:38,429 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 16:00:38,429 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 16:00:38,429 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 16:00:38,430 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:00:38,430 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:00:38,430 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:00:38,431 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:00:38,431 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:00:38,431 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:00:38,431 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:00:38,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:00:38,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:00:38,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:00:38,432 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:00:38,432 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:00:38,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:00:38,433 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:00:38,433 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:00:38,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:00:38,433 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dc39fb366d4472036345a213cca0ee8b355c41bc9af7e685ecaa2d36ed9484 [2023-12-02 16:00:38,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:00:38,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:00:38,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:00:38,699 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:00:38,699 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:00:38,700 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/locks/test_locks_9.c [2023-12-02 16:00:41,377 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:00:41,529 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:00:41,530 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/sv-benchmarks/c/locks/test_locks_9.c [2023-12-02 16:00:41,538 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/bin/utaipan-verify-nQ1chXbOIh/data/dd125b120/e361fd43baac491ca591083fb5d5bfbf/FLAGf90e874e0 [2023-12-02 16:00:41,552 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/bin/utaipan-verify-nQ1chXbOIh/data/dd125b120/e361fd43baac491ca591083fb5d5bfbf [2023-12-02 16:00:41,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:00:41,556 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:00:41,558 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:00:41,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:00:41,563 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:00:41,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:00:41" (1/1) ... [2023-12-02 16:00:41,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@660f0ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:00:41, skipping insertion in model container [2023-12-02 16:00:41,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:00:41" (1/1) ... [2023-12-02 16:00:41,584 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:00:41,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:00:41,732 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:00:41,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:00:41,768 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:00:41,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:00:41 WrapperNode [2023-12-02 16:00:41,768 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:00:41,769 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:00:41,769 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:00:41,769 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:00:41,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:00:41" (1/1) ... [2023-12-02 16:00:41,781 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:00:41" (1/1) ... [2023-12-02 16:00:41,803 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 137 [2023-12-02 16:00:41,803 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:00:41,804 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:00:41,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:00:41,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:00:41,810 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:00:41" (1/1) ... [2023-12-02 16:00:41,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:00:41" (1/1) ... [2023-12-02 16:00:41,812 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:00:41" (1/1) ... [2023-12-02 16:00:41,813 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:00:41" (1/1) ... [2023-12-02 16:00:41,817 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:00:41" (1/1) ... [2023-12-02 16:00:41,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:00:41" (1/1) ... [2023-12-02 16:00:41,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:00:41" (1/1) ... [2023-12-02 16:00:41,824 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:00:41" (1/1) ... [2023-12-02 16:00:41,827 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:00:41,827 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:00:41,828 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:00:41,828 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:00:41,829 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:00:41" (1/1) ... [2023-12-02 16:00:41,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:00:41,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:00:41,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:00:41,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:00:41,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:00:41,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:00:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:00:41,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:00:41,969 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:00:41,970 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:00:42,150 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:00:42,237 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:00:42,237 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:00:42,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:00:42 BoogieIcfgContainer [2023-12-02 16:00:42,239 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:00:42,242 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:00:42,242 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:00:42,245 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:00:42,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:00:41" (1/3) ... [2023-12-02 16:00:42,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1236089e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:00:42, skipping insertion in model container [2023-12-02 16:00:42,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:00:41" (2/3) ... [2023-12-02 16:00:42,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1236089e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:00:42, skipping insertion in model container [2023-12-02 16:00:42,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:00:42" (3/3) ... [2023-12-02 16:00:42,248 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_9.c [2023-12-02 16:00:42,264 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:00:42,264 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 16:00:42,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:00:42,308 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@40acf41c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:00:42,308 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 16:00:42,312 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 25 states have (on average 1.88) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:00:42,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 16:00:42,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:00:42,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 16:00:42,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:00:42,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:00:42,323 INFO L85 PathProgramCache]: Analyzing trace with hash 6657586, now seen corresponding path program 1 times [2023-12-02 16:00:42,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:00:42,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536759583] [2023-12-02 16:00:42,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:00:42,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:00:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:00:42,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:00:42,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:00:42,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536759583] [2023-12-02 16:00:42,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536759583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:00:42,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:00:42,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:00:42,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200991634] [2023-12-02 16:00:42,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:00:42,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 16:00:42,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:00:42,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 16:00:42,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 16:00:42,486 INFO L87 Difference]: Start difference. First operand has 28 states, 25 states have (on average 1.88) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-12-02 16:00:42,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:00:42,512 INFO L93 Difference]: Finished difference Result 28 states and 45 transitions. [2023-12-02 16:00:42,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 16:00:42,514 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2023-12-02 16:00:42,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:00:42,523 INFO L225 Difference]: With dead ends: 28 [2023-12-02 16:00:42,524 INFO L226 Difference]: Without dead ends: 27 [2023-12-02 16:00:42,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 16:00:42,529 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:00:42,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:00:42,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-02 16:00:42,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-12-02 16:00:42,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.76) internal successors, (44), 26 states have internal predecessors, (44), 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) [2023-12-02 16:00:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 44 transitions. [2023-12-02 16:00:42,556 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 44 transitions. Word has length 4 [2023-12-02 16:00:42,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:00:42,556 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 44 transitions. [2023-12-02 16:00:42,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-12-02 16:00:42,557 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 44 transitions. [2023-12-02 16:00:42,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 16:00:42,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:00:42,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 16:00:42,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:00:42,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:00:42,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:00:42,558 INFO L85 PathProgramCache]: Analyzing trace with hash 200750756, now seen corresponding path program 1 times [2023-12-02 16:00:42,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:00:42,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019676545] [2023-12-02 16:00:42,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:00:42,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:00:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:00:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:00:42,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:00:42,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019676545] [2023-12-02 16:00:42,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019676545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:00:42,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:00:42,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:00:42,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938497934] [2023-12-02 16:00:42,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:00:42,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:00:42,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:00:42,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:00:42,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:00:42,648 INFO L87 Difference]: Start difference. First operand 27 states and 44 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-12-02 16:00:42,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:00:42,659 INFO L93 Difference]: Finished difference Result 26 states and 43 transitions. [2023-12-02 16:00:42,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:00:42,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2023-12-02 16:00:42,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:00:42,660 INFO L225 Difference]: With dead ends: 26 [2023-12-02 16:00:42,660 INFO L226 Difference]: Without dead ends: 24 [2023-12-02 16:00:42,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:00:42,662 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:00:42,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 41 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:00:42,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-02 16:00:42,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-02 16:00:42,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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) [2023-12-02 16:00:42,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 41 transitions. [2023-12-02 16:00:42,669 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 41 transitions. Word has length 5 [2023-12-02 16:00:42,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:00:42,669 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 41 transitions. [2023-12-02 16:00:42,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-12-02 16:00:42,670 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 41 transitions. [2023-12-02 16:00:42,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 16:00:42,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:00:42,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:00:42,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 16:00:42,671 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:00:42,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:00:42,672 INFO L85 PathProgramCache]: Analyzing trace with hash -178733697, now seen corresponding path program 1 times [2023-12-02 16:00:42,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:00:42,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341899817] [2023-12-02 16:00:42,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:00:42,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:00:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:00:42,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:00:42,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:00:42,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341899817] [2023-12-02 16:00:42,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341899817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:00:42,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:00:42,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:00:42,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923481529] [2023-12-02 16:00:42,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:00:42,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:00:42,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:00:42,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:00:42,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:00:42,779 INFO L87 Difference]: Start difference. First operand 24 states and 41 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-12-02 16:00:42,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:00:42,807 INFO L93 Difference]: Finished difference Result 45 states and 76 transitions. [2023-12-02 16:00:42,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:00:42,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) Word has length 7 [2023-12-02 16:00:42,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:00:42,809 INFO L225 Difference]: With dead ends: 45 [2023-12-02 16:00:42,809 INFO L226 Difference]: Without dead ends: 45 [2023-12-02 16:00:42,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:00:42,811 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 36 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:00:42,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 106 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:00:42,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-02 16:00:42,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 24. [2023-12-02 16:00:42,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 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) [2023-12-02 16:00:42,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 40 transitions. [2023-12-02 16:00:42,817 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 40 transitions. Word has length 7 [2023-12-02 16:00:42,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:00:42,818 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 40 transitions. [2023-12-02 16:00:42,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-12-02 16:00:42,818 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 40 transitions. [2023-12-02 16:00:42,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 16:00:42,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:00:42,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:00:42,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 16:00:42,819 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:00:42,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:00:42,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1239158759, now seen corresponding path program 1 times [2023-12-02 16:00:42,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:00:42,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326685508] [2023-12-02 16:00:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:00:42,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:00:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:00:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:00:42,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:00:42,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326685508] [2023-12-02 16:00:42,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326685508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:00:42,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:00:42,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:00:42,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708136822] [2023-12-02 16:00:42,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:00:42,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:00:42,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:00:42,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:00:42,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:00:42,909 INFO L87 Difference]: Start difference. First operand 24 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-12-02 16:00:42,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:00:42,932 INFO L93 Difference]: Finished difference Result 43 states and 71 transitions. [2023-12-02 16:00:42,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:00:42,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) Word has length 8 [2023-12-02 16:00:42,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:00:42,933 INFO L225 Difference]: With dead ends: 43 [2023-12-02 16:00:42,933 INFO L226 Difference]: Without dead ends: 43 [2023-12-02 16:00:42,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:00:42,935 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 34 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:00:42,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 100 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:00:42,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-02 16:00:42,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 24. [2023-12-02 16:00:42,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 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) [2023-12-02 16:00:42,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2023-12-02 16:00:42,940 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 8 [2023-12-02 16:00:42,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:00:42,941 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2023-12-02 16:00:42,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-12-02 16:00:42,941 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2023-12-02 16:00:42,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 16:00:42,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:00:42,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:00:42,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 16:00:42,942 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:00:42,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:00:42,943 INFO L85 PathProgramCache]: Analyzing trace with hash 247413258, now seen corresponding path program 1 times [2023-12-02 16:00:42,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:00:42,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046110922] [2023-12-02 16:00:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:00:42,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:00:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:00:43,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:00:43,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:00:43,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046110922] [2023-12-02 16:00:43,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046110922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:00:43,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:00:43,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:00:43,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990489449] [2023-12-02 16:00:43,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:00:43,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:00:43,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:00:43,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:00:43,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:00:43,016 INFO L87 Difference]: Start difference. First operand 24 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-12-02 16:00:43,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:00:43,038 INFO L93 Difference]: Finished difference Result 41 states and 66 transitions. [2023-12-02 16:00:43,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:00:43,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9 [2023-12-02 16:00:43,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:00:43,039 INFO L225 Difference]: With dead ends: 41 [2023-12-02 16:00:43,039 INFO L226 Difference]: Without dead ends: 41 [2023-12-02 16:00:43,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:00:43,041 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 32 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:00:43,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 95 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:00:43,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-02 16:00:43,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24. [2023-12-02 16:00:43,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 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) [2023-12-02 16:00:43,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 38 transitions. [2023-12-02 16:00:43,046 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 38 transitions. Word has length 9 [2023-12-02 16:00:43,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:00:43,047 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 38 transitions. [2023-12-02 16:00:43,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-12-02 16:00:43,047 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 38 transitions. [2023-12-02 16:00:43,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 16:00:43,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:00:43,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:00:43,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 16:00:43,048 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:00:43,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:00:43,049 INFO L85 PathProgramCache]: Analyzing trace with hash -913483900, now seen corresponding path program 1 times [2023-12-02 16:00:43,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:00:43,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244374274] [2023-12-02 16:00:43,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:00:43,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:00:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:00:43,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:00:43,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:00:43,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244374274] [2023-12-02 16:00:43,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244374274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:00:43,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:00:43,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:00:43,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655622150] [2023-12-02 16:00:43,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:00:43,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:00:43,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:00:43,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:00:43,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:00:43,110 INFO L87 Difference]: Start difference. First operand 24 states and 38 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-12-02 16:00:43,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:00:43,129 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2023-12-02 16:00:43,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:00:43,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) Word has length 10 [2023-12-02 16:00:43,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:00:43,131 INFO L225 Difference]: With dead ends: 39 [2023-12-02 16:00:43,131 INFO L226 Difference]: Without dead ends: 39 [2023-12-02 16:00:43,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:00:43,132 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 30 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:00:43,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 88 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:00:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-02 16:00:43,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2023-12-02 16:00:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.608695652173913) internal successors, (37), 23 states have internal predecessors, (37), 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) [2023-12-02 16:00:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 37 transitions. [2023-12-02 16:00:43,137 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 37 transitions. Word has length 10 [2023-12-02 16:00:43,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:00:43,137 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 37 transitions. [2023-12-02 16:00:43,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-12-02 16:00:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 37 transitions. [2023-12-02 16:00:43,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 16:00:43,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:00:43,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:00:43,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 16:00:43,139 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:00:43,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:00:43,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1753420437, now seen corresponding path program 1 times [2023-12-02 16:00:43,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:00:43,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59787850] [2023-12-02 16:00:43,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:00:43,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:00:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:00:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:00:43,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:00:43,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59787850] [2023-12-02 16:00:43,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59787850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:00:43,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:00:43,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:00:43,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619601255] [2023-12-02 16:00:43,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:00:43,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:00:43,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:00:43,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:00:43,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:00:43,196 INFO L87 Difference]: Start difference. First operand 24 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-12-02 16:00:43,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:00:43,215 INFO L93 Difference]: Finished difference Result 37 states and 56 transitions. [2023-12-02 16:00:43,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:00:43,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) Word has length 11 [2023-12-02 16:00:43,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:00:43,217 INFO L225 Difference]: With dead ends: 37 [2023-12-02 16:00:43,217 INFO L226 Difference]: Without dead ends: 37 [2023-12-02 16:00:43,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:00:43,218 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 28 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:00:43,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 83 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:00:43,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-02 16:00:43,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2023-12-02 16:00:43,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 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) [2023-12-02 16:00:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 36 transitions. [2023-12-02 16:00:43,222 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 36 transitions. Word has length 11 [2023-12-02 16:00:43,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:00:43,223 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 36 transitions. [2023-12-02 16:00:43,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-12-02 16:00:43,223 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 36 transitions. [2023-12-02 16:00:43,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 16:00:43,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:00:43,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:00:43,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 16:00:43,224 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:00:43,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:00:43,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1471880465, now seen corresponding path program 1 times [2023-12-02 16:00:43,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:00:43,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426961310] [2023-12-02 16:00:43,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:00:43,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:00:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:00:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:00:43,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:00:43,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426961310] [2023-12-02 16:00:43,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426961310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:00:43,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:00:43,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:00:43,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484021139] [2023-12-02 16:00:43,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:00:43,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:00:43,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:00:43,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:00:43,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:00:43,274 INFO L87 Difference]: Start difference. First operand 24 states and 36 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-12-02 16:00:43,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:00:43,292 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2023-12-02 16:00:43,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:00:43,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) Word has length 12 [2023-12-02 16:00:43,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:00:43,293 INFO L225 Difference]: With dead ends: 35 [2023-12-02 16:00:43,293 INFO L226 Difference]: Without dead ends: 35 [2023-12-02 16:00:43,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:00:43,294 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 26 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:00:43,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 76 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:00:43,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-02 16:00:43,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2023-12-02 16:00:43,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:00:43,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2023-12-02 16:00:43,298 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 35 transitions. Word has length 12 [2023-12-02 16:00:43,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:00:43,298 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 35 transitions. [2023-12-02 16:00:43,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-12-02 16:00:43,298 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2023-12-02 16:00:43,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 16:00:43,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:00:43,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:00:43,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 16:00:43,299 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:00:43,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:00:43,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1623017248, now seen corresponding path program 1 times [2023-12-02 16:00:43,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:00:43,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130466154] [2023-12-02 16:00:43,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:00:43,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:00:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:00:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:00:43,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:00:43,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130466154] [2023-12-02 16:00:43,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130466154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:00:43,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:00:43,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:00:43,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109013380] [2023-12-02 16:00:43,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:00:43,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:00:43,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:00:43,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:00:43,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:00:43,347 INFO L87 Difference]: Start difference. First operand 24 states and 35 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-12-02 16:00:43,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:00:43,363 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2023-12-02 16:00:43,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:00:43,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) Word has length 13 [2023-12-02 16:00:43,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:00:43,364 INFO L225 Difference]: With dead ends: 33 [2023-12-02 16:00:43,364 INFO L226 Difference]: Without dead ends: 33 [2023-12-02 16:00:43,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:00:43,366 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 24 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:00:43,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 70 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:00:43,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-02 16:00:43,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2023-12-02 16:00:43,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:00:43,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2023-12-02 16:00:43,370 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 13 [2023-12-02 16:00:43,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:00:43,370 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2023-12-02 16:00:43,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-12-02 16:00:43,371 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2023-12-02 16:00:43,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 16:00:43,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:00:43,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:00:43,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 16:00:43,372 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:00:43,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:00:43,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1219390886, now seen corresponding path program 1 times [2023-12-02 16:00:43,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:00:43,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043102816] [2023-12-02 16:00:43,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:00:43,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:00:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:00:43,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:00:43,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:00:43,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043102816] [2023-12-02 16:00:43,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043102816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:00:43,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:00:43,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:00:43,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806737427] [2023-12-02 16:00:43,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:00:43,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:00:43,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:00:43,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:00:43,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:00:43,419 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-12-02 16:00:43,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:00:43,435 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2023-12-02 16:00:43,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:00:43,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) Word has length 14 [2023-12-02 16:00:43,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:00:43,436 INFO L225 Difference]: With dead ends: 31 [2023-12-02 16:00:43,436 INFO L226 Difference]: Without dead ends: 31 [2023-12-02 16:00:43,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:00:43,437 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:00:43,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 64 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:00:43,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-02 16:00:43,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2023-12-02 16:00:43,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 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) [2023-12-02 16:00:43,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2023-12-02 16:00:43,440 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 14 [2023-12-02 16:00:43,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:00:43,441 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2023-12-02 16:00:43,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-12-02 16:00:43,441 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2023-12-02 16:00:43,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 16:00:43,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:00:43,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:00:43,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 16:00:43,442 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:00:43,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:00:43,443 INFO L85 PathProgramCache]: Analyzing trace with hash 860280747, now seen corresponding path program 1 times [2023-12-02 16:00:43,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:00:43,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490317901] [2023-12-02 16:00:43,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:00:43,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:00:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:00:43,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:00:43,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:00:43,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490317901] [2023-12-02 16:00:43,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490317901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:00:43,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:00:43,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:00:43,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939102596] [2023-12-02 16:00:43,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:00:43,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:00:43,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:00:43,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:00:43,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:00:43,494 INFO L87 Difference]: Start difference. First operand 24 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-12-02 16:00:43,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:00:43,509 INFO L93 Difference]: Finished difference Result 23 states and 32 transitions. [2023-12-02 16:00:43,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:00:43,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) Word has length 15 [2023-12-02 16:00:43,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:00:43,510 INFO L225 Difference]: With dead ends: 23 [2023-12-02 16:00:43,510 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 16:00:43,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:00:43,511 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 18 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:00:43,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 53 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:00:43,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 16:00:43,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 16:00:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-12-02 16:00:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 16:00:43,512 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2023-12-02 16:00:43,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:00:43,512 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 16:00:43,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-12-02 16:00:43,513 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 16:00:43,513 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 16:00:43,515 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2023-12-02 16:00:43,515 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2023-12-02 16:00:43,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 16:00:43,518 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:00:43,519 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:00:43,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:00:43 BoogieIcfgContainer [2023-12-02 16:00:43,522 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:00:43,522 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:00:43,522 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:00:43,522 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:00:43,523 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:00:42" (3/4) ... [2023-12-02 16:00:43,524 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 16:00:43,532 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-12-02 16:00:43,532 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-12-02 16:00:43,533 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 16:00:43,533 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 16:00:43,606 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 16:00:43,606 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 16:00:43,607 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:00:43,607 INFO L158 Benchmark]: Toolchain (without parser) took 2051.00ms. Allocated memory was 155.2MB in the beginning and 205.5MB in the end (delta: 50.3MB). Free memory was 112.2MB in the beginning and 164.6MB in the end (delta: -52.4MB). Peak memory consumption was 149.3kB. Max. memory is 16.1GB. [2023-12-02 16:00:43,608 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 155.2MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:00:43,608 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.65ms. Allocated memory is still 155.2MB. Free memory was 111.6MB in the beginning and 100.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 16:00:43,609 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.05ms. Allocated memory is still 155.2MB. Free memory was 100.8MB in the beginning and 99.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:00:43,609 INFO L158 Benchmark]: Boogie Preprocessor took 22.97ms. Allocated memory is still 155.2MB. Free memory was 99.1MB in the beginning and 97.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:00:43,610 INFO L158 Benchmark]: RCFGBuilder took 411.24ms. Allocated memory is still 155.2MB. Free memory was 97.5MB in the beginning and 77.7MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 16:00:43,610 INFO L158 Benchmark]: TraceAbstraction took 1280.00ms. Allocated memory was 155.2MB in the beginning and 205.5MB in the end (delta: 50.3MB). Free memory was 77.1MB in the beginning and 169.8MB in the end (delta: -92.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:00:43,610 INFO L158 Benchmark]: Witness Printer took 84.73ms. Allocated memory is still 205.5MB. Free memory was 169.8MB in the beginning and 164.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 16:00:43,612 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 155.2MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.65ms. Allocated memory is still 155.2MB. Free memory was 111.6MB in the beginning and 100.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.05ms. Allocated memory is still 155.2MB. Free memory was 100.8MB in the beginning and 99.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.97ms. Allocated memory is still 155.2MB. Free memory was 99.1MB in the beginning and 97.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 411.24ms. Allocated memory is still 155.2MB. Free memory was 97.5MB in the beginning and 77.7MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1280.00ms. Allocated memory was 155.2MB in the beginning and 205.5MB in the end (delta: 50.3MB). Free memory was 77.1MB in the beginning and 169.8MB in the end (delta: -92.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 84.73ms. Allocated memory is still 205.5MB. Free memory was 169.8MB in the beginning and 164.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 289 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 289 mSDsluCounter, 818 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 449 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 110 IncrementalHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 369 mSDtfsCounter, 110 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 112 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 393 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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! [2023-12-02 16:00:43,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be031395-74a8-4afe-8c82-64f9b6aeb0b8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE