./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/loopv2.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/loopv2.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/loops-crafted-1/loopv2.c ../results/automizer-verification-files/SV-COMP24_unreach-call/loopv2.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 05:17:18,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 05:17:18,986 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 05:17:18,991 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 05:17:18,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 05:17:19,027 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 05:17:19,028 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 05:17:19,028 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 05:17:19,029 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 05:17:19,032 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 05:17:19,033 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 05:17:19,033 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 05:17:19,033 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 05:17:19,034 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 05:17:19,034 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 05:17:19,034 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 05:17:19,035 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 05:17:19,035 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 05:17:19,035 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 05:17:19,035 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 05:17:19,036 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 05:17:19,036 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 05:17:19,036 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 05:17:19,037 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 05:17:19,037 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 05:17:19,037 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 05:17:19,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 05:17:19,038 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 05:17:19,038 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 05:17:19,039 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 05:17:19,039 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 05:17:19,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 05:17:19,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 05:17:19,040 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 05:17:19,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 05:17:19,041 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 05:17:19,041 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 05:17:19,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 05:17:19,041 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 05:17:19,042 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 05:17:19,042 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 05:17:19,042 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 05:17:19,042 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 05:17:19,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 05:17:19,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 05:17:19,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 05:17:19,285 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 05:17:19,286 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 05:17:19,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops-crafted-1/loopv2.c [2024-09-13 05:17:20,630 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 05:17:20,813 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 05:17:20,813 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/loopv2.c [2024-09-13 05:17:20,821 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/b63eda682/41ce1c114f7b4aabbf6df562e01e6340/FLAG028522b8d [2024-09-13 05:17:20,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/b63eda682/41ce1c114f7b4aabbf6df562e01e6340 [2024-09-13 05:17:20,837 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 05:17:20,838 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 05:17:20,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/loopv2.yml/witness-2.1.yml [2024-09-13 05:17:20,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 05:17:20,883 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 05:17:20,883 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 05:17:20,884 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 05:17:20,889 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 05:17:20,890 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 05:17:20" (1/2) ... [2024-09-13 05:17:20,891 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b40eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:17:20, skipping insertion in model container [2024-09-13 05:17:20,891 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 05:17:20" (1/2) ... [2024-09-13 05:17:20,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5dd6434a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:17:20, skipping insertion in model container [2024-09-13 05:17:20,893 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:17:20" (2/2) ... [2024-09-13 05:17:20,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b40eb5 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:17:20, skipping insertion in model container [2024-09-13 05:17:20,895 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:17:20" (2/2) ... [2024-09-13 05:17:20,902 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 05:17:20,903 INFO L1541 ArrayList]: Loop invariant at [L28-L31] ((k % 2) == 0) [2024-09-13 05:17:20,903 INFO L1541 ArrayList]: Loop invariant at [L22-L26] (0 == (i % 2)) [2024-09-13 05:17:20,903 INFO L1541 ArrayList]: Function contract at [L10]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-13 05:17:20,920 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 05:17:21,064 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/loopv2.c[454,467] [2024-09-13 05:17:21,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 05:17:21,086 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-13 05:17:21,116 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/loopv2.c[454,467] Start Parsing Local Start Parsing Local [2024-09-13 05:17:21,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 05:17:21,136 INFO L204 MainTranslator]: Completed translation [2024-09-13 05:17:21,136 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:17:21 WrapperNode [2024-09-13 05:17:21,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 05:17:21,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 05:17:21,138 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 05:17:21,138 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 05:17:21,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:17:21" (1/1) ... [2024-09-13 05:17:21,151 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:17:21" (1/1) ... [2024-09-13 05:17:21,170 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2024-09-13 05:17:21,170 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 05:17:21,171 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 05:17:21,171 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 05:17:21,171 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 05:17:21,181 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:17:21" (1/1) ... [2024-09-13 05:17:21,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:17:21" (1/1) ... [2024-09-13 05:17:21,182 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:17:21" (1/1) ... [2024-09-13 05:17:21,193 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-13 05:17:21,193 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:17:21" (1/1) ... [2024-09-13 05:17:21,193 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:17:21" (1/1) ... [2024-09-13 05:17:21,195 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:17:21" (1/1) ... [2024-09-13 05:17:21,203 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:17:21" (1/1) ... [2024-09-13 05:17:21,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:17:21" (1/1) ... [2024-09-13 05:17:21,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:17:21" (1/1) ... [2024-09-13 05:17:21,210 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 05:17:21,211 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 05:17:21,211 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 05:17:21,212 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 05:17:21,212 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:17:21" (1/1) ... [2024-09-13 05:17:21,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 05:17:21,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:17:21,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 05:17:21,250 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 05:17:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 05:17:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 05:17:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 05:17:21,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 05:17:21,360 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 05:17:21,362 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 05:17:21,507 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-09-13 05:17:21,508 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 05:17:21,533 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 05:17:21,533 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-13 05:17:21,534 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 05:17:21 BoogieIcfgContainer [2024-09-13 05:17:21,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 05:17:21,537 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 05:17:21,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 05:17:21,541 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 05:17:21,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 05:17:20" (1/4) ... [2024-09-13 05:17:21,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22dd74ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 05:17:21, skipping insertion in model container [2024-09-13 05:17:21,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:17:20" (2/4) ... [2024-09-13 05:17:21,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22dd74ec and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 05:17:21, skipping insertion in model container [2024-09-13 05:17:21,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:17:21" (3/4) ... [2024-09-13 05:17:21,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22dd74ec and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 05:17:21, skipping insertion in model container [2024-09-13 05:17:21,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 05:17:21" (4/4) ... [2024-09-13 05:17:21,546 INFO L112 eAbstractionObserver]: Analyzing ICFG loopv2.c [2024-09-13 05:17:21,565 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 05:17:21,566 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-09-13 05:17:21,615 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 05:17:21,624 INFO L336 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@34d171fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 05:17:21,624 INFO L337 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-09-13 05:17:21,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:21,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-09-13 05:17:21,658 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:17:21,658 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-09-13 05:17:21,659 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-13 05:17:21,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:17:21,667 INFO L85 PathProgramCache]: Analyzing trace with hash 82872, now seen corresponding path program 1 times [2024-09-13 05:17:21,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:17:21,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488265651] [2024-09-13 05:17:21,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:17:21,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:17:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:17:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:17:21,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:17:21,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488265651] [2024-09-13 05:17:21,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488265651] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:17:21,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:17:21,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 05:17:21,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383413378] [2024-09-13 05:17:21,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:17:21,921 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:17:21,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:17:21,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:17:21,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:17:21,949 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 18 states have internal predecessors, (24), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:21,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:17:21,987 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2024-09-13 05:17:21,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:17:21,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2024-09-13 05:17:21,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:17:21,996 INFO L225 Difference]: With dead ends: 22 [2024-09-13 05:17:21,996 INFO L226 Difference]: Without dead ends: 20 [2024-09-13 05:17:21,998 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:17:22,001 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 28 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 [2024-09-13 05:17:22,002 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 28 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:17:22,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-13 05:17:22,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-09-13 05:17:22,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:22,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-09-13 05:17:22,034 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 3 [2024-09-13 05:17:22,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:17:22,034 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-09-13 05:17:22,034 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:22,034 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-09-13 05:17:22,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 05:17:22,035 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:17:22,035 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 05:17:22,035 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 05:17:22,035 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-13 05:17:22,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:17:22,036 INFO L85 PathProgramCache]: Analyzing trace with hash 79641520, now seen corresponding path program 1 times [2024-09-13 05:17:22,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:17:22,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202681948] [2024-09-13 05:17:22,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:17:22,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:17:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:17:22,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:17:22,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:17:22,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202681948] [2024-09-13 05:17:22,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202681948] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:17:22,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195527592] [2024-09-13 05:17:22,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:17:22,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:17:22,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:17:22,308 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:17:22,309 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 05:17:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:17:22,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-13 05:17:22,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:17:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:17:22,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:17:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 05:17:22,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195527592] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 05:17:22,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-13 05:17:22,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3] total 4 [2024-09-13 05:17:22,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463869721] [2024-09-13 05:17:22,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:17:22,429 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:17:22,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:17:22,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:17:22,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-13 05:17:22,431 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2024-09-13 05:17:22,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:17:22,447 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2024-09-13 05:17:22,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:17:22,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2024-09-13 05:17:22,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:17:22,449 INFO L225 Difference]: With dead ends: 17 [2024-09-13 05:17:22,449 INFO L226 Difference]: Without dead ends: 17 [2024-09-13 05:17:22,449 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-13 05:17:22,450 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:17:22,451 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:17:22,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-13 05:17:22,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2024-09-13 05:17:22,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-09-13 05:17:22,455 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 5 [2024-09-13 05:17:22,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:17:22,455 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-09-13 05:17:22,456 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2024-09-13 05:17:22,456 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-09-13 05:17:22,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-09-13 05:17:22,456 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:17:22,456 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-09-13 05:17:22,471 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 05:17:22,662 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:17:22,663 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-13 05:17:22,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:17:22,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1826081671, now seen corresponding path program 1 times [2024-09-13 05:17:22,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:17:22,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998459839] [2024-09-13 05:17:22,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:17:22,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:17:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:17:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:17:22,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:17:22,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998459839] [2024-09-13 05:17:22,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998459839] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:17:22,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:17:22,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 05:17:22,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86878152] [2024-09-13 05:17:22,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:17:22,783 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 05:17:22,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:17:22,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 05:17:22,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 05:17:22,784 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:22,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:17:22,816 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2024-09-13 05:17:22,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 05:17:22,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2024-09-13 05:17:22,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:17:22,817 INFO L225 Difference]: With dead ends: 22 [2024-09-13 05:17:22,818 INFO L226 Difference]: Without dead ends: 22 [2024-09-13 05:17:22,818 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 05:17:22,819 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:17:22,821 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 25 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:17:22,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-13 05:17:22,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-09-13 05:17:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.375) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:22,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-09-13 05:17:22,824 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 6 [2024-09-13 05:17:22,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:17:22,824 INFO L474 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-09-13 05:17:22,824 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:22,825 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-09-13 05:17:22,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-13 05:17:22,825 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:17:22,825 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:17:22,825 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 05:17:22,826 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-13 05:17:22,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:17:22,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1777140241, now seen corresponding path program 1 times [2024-09-13 05:17:22,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:17:22,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967781077] [2024-09-13 05:17:22,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:17:22,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:17:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:17:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:17:23,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:17:23,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967781077] [2024-09-13 05:17:23,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967781077] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:17:23,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112370339] [2024-09-13 05:17:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:17:23,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:17:23,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:17:23,023 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:17:23,026 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 05:17:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:17:23,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 05:17:23,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:17:23,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:17:23,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:17:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:17:23,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112370339] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 05:17:23,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-13 05:17:23,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 9 [2024-09-13 05:17:23,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564709095] [2024-09-13 05:17:23,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:17:23,243 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 05:17:23,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:17:23,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 05:17:23,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-09-13 05:17:23,245 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2024-09-13 05:17:23,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:17:23,275 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2024-09-13 05:17:23,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 05:17:23,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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 [2024-09-13 05:17:23,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:17:23,276 INFO L225 Difference]: With dead ends: 21 [2024-09-13 05:17:23,276 INFO L226 Difference]: Without dead ends: 21 [2024-09-13 05:17:23,277 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-09-13 05:17:23,277 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:17:23,278 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 29 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:17:23,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-13 05:17:23,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2024-09-13 05:17:23,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.375) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:23,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-09-13 05:17:23,281 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 8 [2024-09-13 05:17:23,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:17:23,281 INFO L474 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-09-13 05:17:23,281 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2024-09-13 05:17:23,282 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-09-13 05:17:23,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-13 05:17:23,282 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:17:23,282 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-09-13 05:17:23,298 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 05:17:23,486 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:17:23,487 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-13 05:17:23,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:17:23,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1778620801, now seen corresponding path program 1 times [2024-09-13 05:17:23,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:17:23,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120630234] [2024-09-13 05:17:23,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:17:23,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:17:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:17:23,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:17:23,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:17:23,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120630234] [2024-09-13 05:17:23,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120630234] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:17:23,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831777586] [2024-09-13 05:17:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:17:23,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:17:23,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:17:23,594 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:17:23,595 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 05:17:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:17:23,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-13 05:17:23,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:17:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:17:23,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:17:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:17:23,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831777586] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 05:17:23,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-13 05:17:23,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4] total 8 [2024-09-13 05:17:23,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646635654] [2024-09-13 05:17:23,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:17:23,727 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 05:17:23,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:17:23,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 05:17:23,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-09-13 05:17:23,729 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 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) [2024-09-13 05:17:23,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:17:23,757 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2024-09-13 05:17:23,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 05:17:23,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 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 [2024-09-13 05:17:23,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:17:23,758 INFO L225 Difference]: With dead ends: 19 [2024-09-13 05:17:23,758 INFO L226 Difference]: Without dead ends: 19 [2024-09-13 05:17:23,759 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-09-13 05:17:23,759 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:17:23,759 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:17:23,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-09-13 05:17:23,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2024-09-13 05:17:23,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:23,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-09-13 05:17:23,766 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 8 [2024-09-13 05:17:23,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:17:23,768 INFO L474 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-09-13 05:17:23,768 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 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) [2024-09-13 05:17:23,768 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-09-13 05:17:23,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-13 05:17:23,768 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:17:23,769 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:17:23,785 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 05:17:23,969 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:17:23,970 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-13 05:17:23,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:17:23,970 INFO L85 PathProgramCache]: Analyzing trace with hash -743228858, now seen corresponding path program 1 times [2024-09-13 05:17:23,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:17:23,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200139876] [2024-09-13 05:17:23,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:17:23,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:17:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:17:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:17:24,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:17:24,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200139876] [2024-09-13 05:17:24,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200139876] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:17:24,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:17:24,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 05:17:24,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623907712] [2024-09-13 05:17:24,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:17:24,026 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 05:17:24,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:17:24,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 05:17:24,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 05:17:24,029 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 4 states, 3 states have (on average 3.0) 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) [2024-09-13 05:17:24,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:17:24,048 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2024-09-13 05:17:24,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 05:17:24,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) 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 [2024-09-13 05:17:24,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:17:24,049 INFO L225 Difference]: With dead ends: 14 [2024-09-13 05:17:24,049 INFO L226 Difference]: Without dead ends: 13 [2024-09-13 05:17:24,050 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 05:17:24,055 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:17:24,056 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 24 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:17:24,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-09-13 05:17:24,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2024-09-13 05:17:24,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 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) [2024-09-13 05:17:24,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2024-09-13 05:17:24,058 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2024-09-13 05:17:24,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:17:24,059 INFO L474 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2024-09-13 05:17:24,059 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) 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) [2024-09-13 05:17:24,059 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2024-09-13 05:17:24,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-13 05:17:24,061 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:17:24,061 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:17:24,061 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-13 05:17:24,062 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-13 05:17:24,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:17:24,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1278359095, now seen corresponding path program 1 times [2024-09-13 05:17:24,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:17:24,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139417097] [2024-09-13 05:17:24,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:17:24,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:17:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:17:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:17:24,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:17:24,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139417097] [2024-09-13 05:17:24,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139417097] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:17:24,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:17:24,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 05:17:24,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941149915] [2024-09-13 05:17:24,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:17:24,101 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:17:24,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:17:24,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:17:24,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:17:24,101 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2024-09-13 05:17:24,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:17:24,106 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2024-09-13 05:17:24,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:17:24,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2024-09-13 05:17:24,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:17:24,107 INFO L225 Difference]: With dead ends: 10 [2024-09-13 05:17:24,107 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 05:17:24,107 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:17:24,108 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 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 [2024-09-13 05:17:24,108 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:17:24,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 05:17:24,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 05:17:24,110 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) [2024-09-13 05:17:24,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 05:17:24,111 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2024-09-13 05:17:24,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:17:24,111 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 05:17:24,111 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2024-09-13 05:17:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 05:17:24,111 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 05:17:24,114 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-09-13 05:17:24,114 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-09-13 05:17:24,114 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONPRE_CONDITION (2 of 5 remaining) [2024-09-13 05:17:24,114 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-09-13 05:17:24,115 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONPOST_CONDITION (0 of 5 remaining) [2024-09-13 05:17:24,115 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-13 05:17:24,118 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:17:24,119 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 05:17:24,121 INFO L469 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-09-13 05:17:24,121 INFO L470 ceAbstractionStarter]: WitnessConsidered=2 [2024-09-13 05:17:24,122 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 05:17:24 BoogieIcfgContainer [2024-09-13 05:17:24,123 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 05:17:24,123 INFO L158 Benchmark]: Toolchain (without parser) took 3240.63ms. Allocated memory was 163.6MB in the beginning and 203.4MB in the end (delta: 39.8MB). Free memory was 87.8MB in the beginning and 163.0MB in the end (delta: -75.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:17:24,123 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 163.6MB. Free memory is still 114.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:17:24,123 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 163.6MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:17:24,124 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.58ms. Allocated memory is still 163.6MB. Free memory was 87.8MB in the beginning and 74.4MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 05:17:24,124 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.48ms. Allocated memory is still 163.6MB. Free memory was 74.4MB in the beginning and 72.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 05:17:24,124 INFO L158 Benchmark]: Boogie Preprocessor took 39.81ms. Allocated memory is still 163.6MB. Free memory was 72.7MB in the beginning and 71.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:17:24,125 INFO L158 Benchmark]: RCFGBuilder took 323.45ms. Allocated memory is still 163.6MB. Free memory was 71.1MB in the beginning and 59.3MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 05:17:24,125 INFO L158 Benchmark]: TraceAbstraction took 2585.97ms. Allocated memory was 163.6MB in the beginning and 203.4MB in the end (delta: 39.8MB). Free memory was 58.5MB in the beginning and 163.0MB in the end (delta: -104.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:17:24,128 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 163.6MB. Free memory is still 114.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.19ms. Allocated memory is still 163.6MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.58ms. Allocated memory is still 163.6MB. Free memory was 87.8MB in the beginning and 74.4MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.48ms. Allocated memory is still 163.6MB. Free memory was 74.4MB in the beginning and 72.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.81ms. Allocated memory is still 163.6MB. Free memory was 72.7MB in the beginning and 71.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 323.45ms. Allocated memory is still 163.6MB. Free memory was 71.1MB in the beginning and 59.3MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2585.97ms. Allocated memory was 163.6MB in the beginning and 203.4MB in the end (delta: 39.8MB). Free memory was 58.5MB in the beginning and 163.0MB in the end (delta: -104.5MB). There was no memory consumed. 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: 22]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 28]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 10]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 12]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 10]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 170 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 98 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 107 IncrementalHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 72 mSDtfsCounter, 107 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, InterpolantAutomatonStates: 26, 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, 7 MinimizatonAttempts, 11 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 300 SizeOfPredicates, 0 NumberOfNonLiveVariables, 125 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 4/12 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 05:17:24,155 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE