./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-invariants/recursified_bin-suffix-5.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_bin-suffix-5.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/recursified_loop-invariants/recursified_bin-suffix-5.c ../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_bin-suffix-5.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 06:31:16,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 06:31:16,835 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 06:31:16,842 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 06:31:16,843 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 06:31:16,872 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 06:31:16,873 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 06:31:16,873 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 06:31:16,874 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 06:31:16,874 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 06:31:16,874 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 06:31:16,875 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 06:31:16,876 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 06:31:16,879 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 06:31:16,879 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 06:31:16,880 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 06:31:16,880 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 06:31:16,880 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 06:31:16,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 06:31:16,880 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 06:31:16,881 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 06:31:16,883 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 06:31:16,883 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 06:31:16,883 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 06:31:16,883 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 06:31:16,884 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 06:31:16,884 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 06:31:16,884 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 06:31:16,884 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 06:31:16,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 06:31:16,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 06:31:16,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 06:31:16,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:31:16,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 06:31:16,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 06:31:16,886 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 06:31:16,886 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 06:31:16,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 06:31:16,887 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 06:31:16,887 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 06:31:16,888 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 06:31:16,888 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 06:31:16,888 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 06:31:17,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 06:31:17,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 06:31:17,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 06:31:17,187 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 06:31:17,188 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 06:31:17,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_bin-suffix-5.yml/witness-2.1.yml [2024-09-13 06:31:17,241 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 06:31:17,241 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 06:31:17,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_loop-invariants/recursified_bin-suffix-5.c [2024-09-13 06:31:18,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 06:31:18,899 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 06:31:18,899 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-invariants/recursified_bin-suffix-5.c [2024-09-13 06:31:18,907 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/7dc06c0c1/ec6d47dca6634fea8e94675c7d053eba/FLAGd230cbb3a [2024-09-13 06:31:18,927 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/7dc06c0c1/ec6d47dca6634fea8e94675c7d053eba [2024-09-13 06:31:18,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 06:31:18,929 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 06:31:18,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 06:31:18,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 06:31:18,937 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 06:31:18,938 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 06:31:17" (1/2) ... [2024-09-13 06:31:18,939 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@555a028 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:31:18, skipping insertion in model container [2024-09-13 06:31:18,939 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 06:31:17" (1/2) ... [2024-09-13 06:31:18,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2cc75521 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:31:18, skipping insertion in model container [2024-09-13 06:31:18,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:31:18" (2/2) ... [2024-09-13 06:31:18,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@555a028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:31:18, skipping insertion in model container [2024-09-13 06:31:18,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:31:18" (2/2) ... [2024-09-13 06:31:18,951 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 06:31:18,951 INFO L1541 ArrayList]: Function contract at [L21]: requires (1 == \old(cond)), ensures (1 == \old(cond)) [2024-09-13 06:31:18,970 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 06:31:19,125 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/recursified_loop-invariants/recursified_bin-suffix-5.c[986,999] [2024-09-13 06:31:19,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:31:19,152 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-13 06:31:19,192 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/recursified_loop-invariants/recursified_bin-suffix-5.c[986,999] [2024-09-13 06:31:19,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:31:19,215 INFO L204 MainTranslator]: Completed translation [2024-09-13 06:31:19,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:31:19 WrapperNode [2024-09-13 06:31:19,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 06:31:19,216 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 06:31:19,216 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 06:31:19,216 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 06:31:19,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:31:19" (1/1) ... [2024-09-13 06:31:19,230 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:31:19" (1/1) ... [2024-09-13 06:31:19,246 INFO L138 Inliner]: procedures = 15, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2024-09-13 06:31:19,246 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 06:31:19,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 06:31:19,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 06:31:19,247 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 06:31:19,254 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:31:19" (1/1) ... [2024-09-13 06:31:19,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:31:19" (1/1) ... [2024-09-13 06:31:19,255 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:31:19" (1/1) ... [2024-09-13 06:31:19,266 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 1 writes are split as follows [0, 1]. [2024-09-13 06:31:19,267 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:31:19" (1/1) ... [2024-09-13 06:31:19,267 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:31:19" (1/1) ... [2024-09-13 06:31:19,271 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:31:19" (1/1) ... [2024-09-13 06:31:19,272 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:31:19" (1/1) ... [2024-09-13 06:31:19,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:31:19" (1/1) ... [2024-09-13 06:31:19,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:31:19" (1/1) ... [2024-09-13 06:31:19,278 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 06:31:19,279 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 06:31:19,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 06:31:19,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 06:31:19,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:31:19" (1/1) ... [2024-09-13 06:31:19,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:31:19,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:31:19,307 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 06:31:19,309 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 06:31:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 06:31:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_13_to_14_0 [2024-09-13 06:31:19,346 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_13_to_14_0 [2024-09-13 06:31:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 06:31:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-13 06:31:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-13 06:31:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-13 06:31:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-13 06:31:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 06:31:19,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 06:31:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-13 06:31:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-13 06:31:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 06:31:19,406 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 06:31:19,408 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 06:31:19,510 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-09-13 06:31:19,510 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 06:31:19,535 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 06:31:19,535 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 06:31:19,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:31:19 BoogieIcfgContainer [2024-09-13 06:31:19,536 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 06:31:19,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 06:31:19,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 06:31:19,541 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 06:31:19,541 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 06:31:17" (1/4) ... [2024-09-13 06:31:19,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a686d8e and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:31:19, skipping insertion in model container [2024-09-13 06:31:19,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 06:31:18" (2/4) ... [2024-09-13 06:31:19,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a686d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 06:31:19, skipping insertion in model container [2024-09-13 06:31:19,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:31:19" (3/4) ... [2024-09-13 06:31:19,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a686d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 06:31:19, skipping insertion in model container [2024-09-13 06:31:19,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:31:19" (4/4) ... [2024-09-13 06:31:19,544 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_bin-suffix-5.c [2024-09-13 06:31:19,557 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 06:31:19,558 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-09-13 06:31:19,598 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 06:31:19,605 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;@ad2f4ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 06:31:19,605 INFO L337 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-09-13 06:31:19,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:31:19,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-13 06:31:19,615 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:31:19,616 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:31:19,616 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONPOST_CONDITION] === [2024-09-13 06:31:19,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:31:19,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1223159087, now seen corresponding path program 1 times [2024-09-13 06:31:19,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:31:19,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327090028] [2024-09-13 06:31:19,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:31:19,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:31:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:31:19,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:31:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:31:20,004 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 06:31:20,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:31:20,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327090028] [2024-09-13 06:31:20,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327090028] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:31:20,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:31:20,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 06:31:20,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010049383] [2024-09-13 06:31:20,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:31:20,020 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 06:31:20,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:31:20,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 06:31:20,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:31:20,055 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:31:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:31:20,143 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-09-13 06:31:20,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 06:31:20,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-13 06:31:20,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:31:20,154 INFO L225 Difference]: With dead ends: 25 [2024-09-13 06:31:20,155 INFO L226 Difference]: Without dead ends: 24 [2024-09-13 06:31:20,156 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:31:20,160 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:31:20,161 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:31:20,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-13 06:31:20,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-13 06:31:20,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 06:31:20,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-09-13 06:31:20,201 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 10 [2024-09-13 06:31:20,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:31:20,202 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-09-13 06:31:20,202 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:31:20,202 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-09-13 06:31:20,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-13 06:31:20,204 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:31:20,205 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:31:20,205 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 06:31:20,205 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONPOST_CONDITION] === [2024-09-13 06:31:20,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:31:20,207 INFO L85 PathProgramCache]: Analyzing trace with hash -736719194, now seen corresponding path program 1 times [2024-09-13 06:31:20,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:31:20,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753022983] [2024-09-13 06:31:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:31:20,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:31:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:31:20,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:31:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:31:20,665 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 06:31:20,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:31:20,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753022983] [2024-09-13 06:31:20,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753022983] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:31:20,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:31:20,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 06:31:20,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029580216] [2024-09-13 06:31:20,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:31:20,668 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 06:31:20,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:31:20,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 06:31:20,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-13 06:31:20,669 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:31:20,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:31:20,745 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-09-13 06:31:20,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 06:31:20,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-13 06:31:20,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:31:20,747 INFO L225 Difference]: With dead ends: 25 [2024-09-13 06:31:20,748 INFO L226 Difference]: Without dead ends: 24 [2024-09-13 06:31:20,748 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-13 06:31:20,750 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:31:20,751 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 62 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:31:20,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-13 06:31:20,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-13 06:31:20,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 06:31:20,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-09-13 06:31:20,757 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 11 [2024-09-13 06:31:20,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:31:20,758 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-09-13 06:31:20,758 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:31:20,758 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-09-13 06:31:20,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-13 06:31:20,759 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:31:20,760 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:31:20,760 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 06:31:20,760 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONPOST_CONDITION] === [2024-09-13 06:31:20,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:31:20,761 INFO L85 PathProgramCache]: Analyzing trace with hash 682460361, now seen corresponding path program 1 times [2024-09-13 06:31:20,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:31:20,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675575665] [2024-09-13 06:31:20,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:31:20,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:31:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:31:20,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:31:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:31:20,823 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 06:31:20,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:31:20,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675575665] [2024-09-13 06:31:20,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675575665] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:31:20,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:31:20,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 06:31:20,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482312019] [2024-09-13 06:31:20,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:31:20,827 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 06:31:20,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:31:20,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 06:31:20,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 06:31:20,828 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:31:20,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:31:20,856 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2024-09-13 06:31:20,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 06:31:20,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-09-13 06:31:20,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:31:20,858 INFO L225 Difference]: With dead ends: 22 [2024-09-13 06:31:20,858 INFO L226 Difference]: Without dead ends: 16 [2024-09-13 06:31:20,859 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 06:31:20,860 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:31:20,860 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 40 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:31:20,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-13 06:31:20,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-13 06:31:20,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 06:31:20,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-09-13 06:31:20,866 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 13 [2024-09-13 06:31:20,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:31:20,867 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-09-13 06:31:20,867 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:31:20,867 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-09-13 06:31:20,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-13 06:31:20,871 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:31:20,871 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:31:20,871 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 06:31:20,872 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONPOST_CONDITION] === [2024-09-13 06:31:20,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:31:20,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1848557921, now seen corresponding path program 1 times [2024-09-13 06:31:20,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:31:20,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913631163] [2024-09-13 06:31:20,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:31:20,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:31:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:31:21,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:31:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:31:21,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:31:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:31:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 06:31:21,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:31:21,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913631163] [2024-09-13 06:31:21,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913631163] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:31:21,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130891894] [2024-09-13 06:31:21,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:31:21,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:31:21,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:31:21,321 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 06:31:21,325 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 06:31:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:31:21,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-13 06:31:21,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:31:21,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-13 06:31:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 06:31:21,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:31:21,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-13 06:31:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:31:22,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130891894] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:31:22,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:31:22,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-09-13 06:31:22,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922898067] [2024-09-13 06:31:22,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:31:22,017 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-13 06:31:22,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:31:22,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-13 06:31:22,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-09-13 06:31:22,021 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 19 states, 16 states have (on average 1.5625) internal successors, (25), 15 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-13 06:31:22,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:31:22,244 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-09-13 06:31:22,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 06:31:22,246 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.5625) internal successors, (25), 15 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 15 [2024-09-13 06:31:22,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:31:22,247 INFO L225 Difference]: With dead ends: 26 [2024-09-13 06:31:22,247 INFO L226 Difference]: Without dead ends: 24 [2024-09-13 06:31:22,247 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2024-09-13 06:31:22,248 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:31:22,248 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 69 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:31:22,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-13 06:31:22,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2024-09-13 06:31:22,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 06:31:22,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-09-13 06:31:22,255 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 15 [2024-09-13 06:31:22,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:31:22,255 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-09-13 06:31:22,256 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.5625) internal successors, (25), 15 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-13 06:31:22,256 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-09-13 06:31:22,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-13 06:31:22,258 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:31:22,258 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:31:22,276 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 06:31:22,458 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:31:22,459 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONPOST_CONDITION] === [2024-09-13 06:31:22,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:31:22,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2110984601, now seen corresponding path program 2 times [2024-09-13 06:31:22,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:31:22,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809716485] [2024-09-13 06:31:22,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:31:22,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:31:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:31:22,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:31:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:31:22,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:31:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:31:23,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:31:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:31:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-13 06:31:23,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:31:23,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809716485] [2024-09-13 06:31:23,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809716485] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:31:23,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826380739] [2024-09-13 06:31:23,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 06:31:23,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:31:23,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:31:23,037 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 06:31:23,039 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 06:31:23,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 06:31:23,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:31:23,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-13 06:31:23,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:31:23,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-13 06:31:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 06:31:23,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:31:23,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-13 06:31:23,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826380739] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:31:23,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 06:31:23,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2024-09-13 06:31:23,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580806528] [2024-09-13 06:31:23,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 06:31:23,843 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-13 06:31:23,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:31:23,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-13 06:31:23,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2024-09-13 06:31:23,846 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 19 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 6 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 06:31:24,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:31:24,042 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2024-09-13 06:31:24,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 06:31:24,042 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 6 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 20 [2024-09-13 06:31:24,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:31:24,043 INFO L225 Difference]: With dead ends: 29 [2024-09-13 06:31:24,043 INFO L226 Difference]: Without dead ends: 29 [2024-09-13 06:31:24,044 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2024-09-13 06:31:24,045 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:31:24,046 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 142 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:31:24,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-13 06:31:24,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2024-09-13 06:31:24,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-13 06:31:24,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-09-13 06:31:24,051 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 20 [2024-09-13 06:31:24,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:31:24,051 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-09-13 06:31:24,052 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 6 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 06:31:24,052 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-09-13 06:31:24,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-13 06:31:24,052 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:31:24,052 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:31:24,067 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 06:31:24,253 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:31:24,253 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONPOST_CONDITION] === [2024-09-13 06:31:24,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:31:24,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1650542844, now seen corresponding path program 1 times [2024-09-13 06:31:24,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:31:24,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666298694] [2024-09-13 06:31:24,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:31:24,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:31:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-13 06:31:24,269 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-09-13 06:31:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-13 06:31:24,290 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-09-13 06:31:24,290 INFO L326 BasicCegarLoop]: Counterexample is feasible [2024-09-13 06:31:24,292 INFO L785 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION (2 of 3 remaining) [2024-09-13 06:31:24,294 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-09-13 06:31:24,295 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONPOST_CONDITION (0 of 3 remaining) [2024-09-13 06:31:24,295 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-13 06:31:24,298 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-09-13 06:31:24,321 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 06:31:24,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 06:31:24 BoogieIcfgContainer [2024-09-13 06:31:24,324 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 06:31:24,325 INFO L158 Benchmark]: Toolchain (without parser) took 5395.53ms. Allocated memory was 167.8MB in the beginning and 218.1MB in the end (delta: 50.3MB). Free memory was 136.0MB in the beginning and 163.3MB in the end (delta: -27.3MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. [2024-09-13 06:31:24,325 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 167.8MB. Free memory is still 139.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:31:24,325 INFO L158 Benchmark]: CDTParser took 0.77ms. Allocated memory is still 167.8MB. Free memory is still 137.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:31:24,325 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.74ms. Allocated memory is still 167.8MB. Free memory was 136.0MB in the beginning and 122.2MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 06:31:24,325 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.97ms. Allocated memory is still 167.8MB. Free memory was 122.2MB in the beginning and 120.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:31:24,326 INFO L158 Benchmark]: Boogie Preprocessor took 31.42ms. Allocated memory is still 167.8MB. Free memory was 120.9MB in the beginning and 119.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 06:31:24,326 INFO L158 Benchmark]: RCFGBuilder took 257.21ms. Allocated memory is still 167.8MB. Free memory was 119.5MB in the beginning and 106.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 06:31:24,327 INFO L158 Benchmark]: TraceAbstraction took 4786.63ms. Allocated memory was 167.8MB in the beginning and 218.1MB in the end (delta: 50.3MB). Free memory was 106.2MB in the beginning and 163.3MB in the end (delta: -57.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:31:24,329 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.18ms. Allocated memory is still 167.8MB. Free memory is still 139.5MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.77ms. Allocated memory is still 167.8MB. Free memory is still 137.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.74ms. Allocated memory is still 167.8MB. Free memory was 136.0MB in the beginning and 122.2MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.97ms. Allocated memory is still 167.8MB. Free memory was 122.2MB in the beginning and 120.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.42ms. Allocated memory is still 167.8MB. Free memory was 120.9MB in the beginning and 119.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 257.21ms. Allocated memory is still 167.8MB. Free memory was 119.5MB in the beginning and 106.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4786.63ms. Allocated memory was 167.8MB in the beginning and 218.1MB in the end (delta: 50.3MB). Free memory was 106.2MB in the beginning and 163.3MB in the end (delta: -57.1MB). 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 - UnprovableResult [Line: 21]: Unable to prove that procedure precondition always holds Unable to prove that procedure precondition always holds Reason: overapproximation of bitwiseAnd at line 56. Possible FailurePath: [L54] unsigned int x = 5; [L54] unsigned int x = 5; [L55] CALL func_to_recursive_line_13_to_14_0(&x) VAL [\old(x)={6:0}] [L40] COND TRUE __VERIFIER_nondet_int() [L43] EXPR \read(*x) [L43] *x += 8 [L45] CALL func_to_recursive_line_13_to_14_0(x) VAL [\old(x)={6:0}] [L40] COND FALSE !(__VERIFIER_nondet_int()) [L45] RET func_to_recursive_line_13_to_14_0(x) VAL [\old(x)={6:0}, x={6:0}] [L55] RET func_to_recursive_line_13_to_14_0(&x) VAL [x={6:0}] [L56] EXPR \read(x) [L56] EXPR x & 5 [L56] CALL __VERIFIER_assert((x & 5) == 5) [L21] Requires[BinaryExpression[COMPEQ,IntegerLiteral[1],OldValueExpression[IdentifierExpression[cond]]]] - UnprovableResult [Line: 27]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that procedure postcondition always holds Unable to prove that procedure postcondition always holds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 367 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 300 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 439 IncrementalHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 67 mSDtfsCounter, 439 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=5, InterpolantAutomatonStates: 38, 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, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 4 QuantifiedInterpolants, 910 SizeOfPredicates, 10 NumberOfNonLiveVariables, 177 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 9/38 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-09-13 06:31:24,358 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/recursified_loop-invariants/recursified_bin-suffix-5.c ../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_bin-suffix-5.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.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 06:31:26,600 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 06:31:26,679 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-09-13 06:31:26,684 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 06:31:26,685 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 06:31:26,711 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 06:31:26,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 06:31:26,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 06:31:26,712 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 06:31:26,712 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 06:31:26,713 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 06:31:26,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 06:31:26,713 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 06:31:26,714 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 06:31:26,714 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 06:31:26,714 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 06:31:26,715 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 06:31:26,715 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 06:31:26,715 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 06:31:26,715 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 06:31:26,716 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 06:31:26,718 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 06:31:26,718 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 06:31:26,718 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-09-13 06:31:26,719 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-09-13 06:31:26,719 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 06:31:26,719 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-09-13 06:31:26,727 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 06:31:26,728 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 06:31:26,729 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 06:31:26,730 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 06:31:26,730 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 06:31:26,730 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 06:31:26,733 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 06:31:26,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:31:26,734 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 06:31:26,734 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 06:31:26,734 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 06:31:26,734 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-09-13 06:31:26,734 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-09-13 06:31:26,735 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 06:31:26,735 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 06:31:26,736 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 06:31:26,736 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 06:31:26,736 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-09-13 06:31:26,736 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 06:31:27,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 06:31:27,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 06:31:27,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 06:31:27,097 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 06:31:27,098 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 06:31:27,100 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_loop-invariants/recursified_bin-suffix-5.c [2024-09-13 06:31:28,712 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 06:31:28,902 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 06:31:28,903 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-invariants/recursified_bin-suffix-5.c [2024-09-13 06:31:28,912 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/b51e5ad59/bd8dc1d34f844c3db485484cfd26a906/FLAGf2a75ec0a [2024-09-13 06:31:29,297 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/b51e5ad59/bd8dc1d34f844c3db485484cfd26a906 [2024-09-13 06:31:29,299 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 06:31:29,300 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 06:31:29,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_bin-suffix-5.yml/witness-2.1.yml [2024-09-13 06:31:29,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 06:31:29,357 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 06:31:29,359 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 06:31:29,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 06:31:29,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 06:31:29,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:31:29" (1/2) ... [2024-09-13 06:31:29,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45221c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:31:29, skipping insertion in model container [2024-09-13 06:31:29,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:31:29" (1/2) ... [2024-09-13 06:31:29,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2778eebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:31:29, skipping insertion in model container [2024-09-13 06:31:29,368 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 06:31:29" (2/2) ... [2024-09-13 06:31:29,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45221c38 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:31:29, skipping insertion in model container [2024-09-13 06:31:29,369 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 06:31:29" (2/2) ... [2024-09-13 06:31:29,376 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 06:31:29,380 INFO L1541 ArrayList]: Function contract at [L21]: requires (1 == \old(cond)), ensures (1 == \old(cond)) [2024-09-13 06:31:29,398 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 06:31:29,556 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/recursified_loop-invariants/recursified_bin-suffix-5.c[986,999] [2024-09-13 06:31:29,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:31:29,590 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-13 06:31:29,626 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/recursified_loop-invariants/recursified_bin-suffix-5.c[986,999] [2024-09-13 06:31:29,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:31:29,649 INFO L204 MainTranslator]: Completed translation [2024-09-13 06:31:29,650 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:31:29 WrapperNode [2024-09-13 06:31:29,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 06:31:29,652 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 06:31:29,652 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 06:31:29,652 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 06:31:29,659 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 06:31:29" (1/1) ... [2024-09-13 06:31:29,667 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 06:31:29" (1/1) ... [2024-09-13 06:31:29,684 INFO L138 Inliner]: procedures = 18, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2024-09-13 06:31:29,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 06:31:29,685 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 06:31:29,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 06:31:29,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 06:31:29,695 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 06:31:29" (1/1) ... [2024-09-13 06:31:29,695 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 06:31:29" (1/1) ... [2024-09-13 06:31:29,699 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 06:31:29" (1/1) ... [2024-09-13 06:31:29,713 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 1 writes are split as follows [0, 1]. [2024-09-13 06:31:29,713 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 06:31:29" (1/1) ... [2024-09-13 06:31:29,714 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 06:31:29" (1/1) ... [2024-09-13 06:31:29,720 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 06:31:29" (1/1) ... [2024-09-13 06:31:29,724 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 06:31:29" (1/1) ... [2024-09-13 06:31:29,729 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 06:31:29" (1/1) ... [2024-09-13 06:31:29,730 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 06:31:29" (1/1) ... [2024-09-13 06:31:29,732 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 06:31:29,733 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 06:31:29,733 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 06:31:29,734 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 06:31:29,734 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 06:31:29" (1/1) ... [2024-09-13 06:31:29,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:31:29,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:31:29,766 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 06:31:29,769 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 06:31:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 06:31:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_13_to_14_0 [2024-09-13 06:31:29,816 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_13_to_14_0 [2024-09-13 06:31:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-09-13 06:31:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-09-13 06:31:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-09-13 06:31:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-09-13 06:31:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-13 06:31:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-09-13 06:31:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-09-13 06:31:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 06:31:29,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 06:31:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 06:31:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-09-13 06:31:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-09-13 06:31:29,904 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 06:31:29,907 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 06:31:30,026 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-09-13 06:31:30,026 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 06:31:30,064 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 06:31:30,064 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 06:31:30,065 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:31:30 BoogieIcfgContainer [2024-09-13 06:31:30,065 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 06:31:30,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 06:31:30,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 06:31:30,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 06:31:30,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 06:31:29" (1/4) ... [2024-09-13 06:31:30,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286489da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 06:31:30, skipping insertion in model container [2024-09-13 06:31:30,071 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 06:31:29" (2/4) ... [2024-09-13 06:31:30,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286489da and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:31:30, skipping insertion in model container [2024-09-13 06:31:30,072 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 06:31:29" (3/4) ... [2024-09-13 06:31:30,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286489da and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:31:30, skipping insertion in model container [2024-09-13 06:31:30,072 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 06:31:30" (4/4) ... [2024-09-13 06:31:30,075 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_bin-suffix-5.c [2024-09-13 06:31:30,096 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 06:31:30,096 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-09-13 06:31:30,142 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 06:31:30,149 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;@5fb454d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 06:31:30,149 INFO L337 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-09-13 06:31:30,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:31:30,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-13 06:31:30,160 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:31:30,160 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:31:30,161 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONPOST_CONDITION] === [2024-09-13 06:31:30,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:31:30,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1709971936, now seen corresponding path program 1 times [2024-09-13 06:31:30,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 06:31:30,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395583023] [2024-09-13 06:31:30,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:31:30,179 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 06:31:30,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 06:31:30,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 06:31:30,184 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-09-13 06:31:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:31:30,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 06:31:30,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:31:30,442 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 06:31:30,445 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 06:31:30,446 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 06:31:30,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395583023] [2024-09-13 06:31:30,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395583023] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:31:30,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:31:30,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 06:31:30,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878092940] [2024-09-13 06:31:30,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:31:30,453 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 06:31:30,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 06:31:30,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 06:31:30,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:31:30,498 INFO L87 Difference]: Start difference. First operand has 16 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:31:30,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:31:30,569 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2024-09-13 06:31:30,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 06:31:30,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2024-09-13 06:31:30,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:31:30,580 INFO L225 Difference]: With dead ends: 19 [2024-09-13 06:31:30,581 INFO L226 Difference]: Without dead ends: 17 [2024-09-13 06:31:30,582 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:31:30,587 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:31:30,588 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 29 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:31:30,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-13 06:31:30,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-09-13 06:31:30,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 06:31:30,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-09-13 06:31:30,625 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 8 [2024-09-13 06:31:30,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:31:30,626 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-09-13 06:31:30,626 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:31:30,626 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-09-13 06:31:30,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-13 06:31:30,628 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:31:30,628 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:31:30,632 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-09-13 06:31:30,830 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 06:31:30,831 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONPOST_CONDITION] === [2024-09-13 06:31:30,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:31:30,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1689445411, now seen corresponding path program 1 times [2024-09-13 06:31:30,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 06:31:30,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444647294] [2024-09-13 06:31:30,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:31:30,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 06:31:30,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 06:31:30,857 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 06:31:30,859 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-09-13 06:31:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:31:30,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 06:31:30,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:31:30,988 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 06:31:30,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 06:31:30,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 06:31:30,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444647294] [2024-09-13 06:31:30,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444647294] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:31:30,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:31:30,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 06:31:30,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653692398] [2024-09-13 06:31:30,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:31:30,994 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 06:31:30,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 06:31:30,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 06:31:30,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:31:30,995 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:31:31,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:31:31,054 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2024-09-13 06:31:31,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 06:31:31,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-13 06:31:31,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:31:31,055 INFO L225 Difference]: With dead ends: 15 [2024-09-13 06:31:31,055 INFO L226 Difference]: Without dead ends: 12 [2024-09-13 06:31:31,055 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-13 06:31:31,056 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:31:31,057 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 27 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:31:31,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-09-13 06:31:31,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-09-13 06:31:31,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 8 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 06:31:31,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2024-09-13 06:31:31,062 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2024-09-13 06:31:31,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:31:31,062 INFO L474 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2024-09-13 06:31:31,062 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:31:31,062 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2024-09-13 06:31:31,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-13 06:31:31,063 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:31:31,063 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:31:31,068 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-09-13 06:31:31,263 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 06:31:31,264 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONPOST_CONDITION] === [2024-09-13 06:31:31,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:31:31,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1717108778, now seen corresponding path program 1 times [2024-09-13 06:31:31,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 06:31:31,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884057596] [2024-09-13 06:31:31,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:31:31,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 06:31:31,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 06:31:31,269 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 06:31:31,270 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-09-13 06:31:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:31:31,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-13 06:31:31,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:31:31,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-13 06:31:31,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 06:31:31,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:31:31,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2024-09-13 06:31:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:31:31,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 06:31:31,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884057596] [2024-09-13 06:31:31,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884057596] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:31:31,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 06:31:31,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2024-09-13 06:31:31,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153744850] [2024-09-13 06:31:31,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 06:31:31,872 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-13 06:31:31,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 06:31:31,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-13 06:31:31,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-13 06:31:31,874 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 06:31:31,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:31:31,968 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2024-09-13 06:31:31,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 06:31:31,969 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 13 [2024-09-13 06:31:31,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:31:31,969 INFO L225 Difference]: With dead ends: 14 [2024-09-13 06:31:31,970 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 06:31:31,970 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-13 06:31:31,971 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:31:31,971 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 23 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:31:31,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 06:31:31,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 06:31:31,972 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 06:31:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 06:31:31,973 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2024-09-13 06:31:31,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:31:31,973 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 06:31:31,973 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 06:31:31,974 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 06:31:31,974 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 06:31:31,976 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION (2 of 3 remaining) [2024-09-13 06:31:31,977 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-09-13 06:31:31,977 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONPOST_CONDITION (0 of 3 remaining) [2024-09-13 06:31:31,980 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-09-13 06:31:32,178 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 06:31:32,181 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-09-13 06:31:32,183 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 06:31:32,186 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 06:31:32 BoogieIcfgContainer [2024-09-13 06:31:32,186 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 06:31:32,187 INFO L158 Benchmark]: Toolchain (without parser) took 2829.57ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 28.6MB in the beginning and 39.8MB in the end (delta: -11.2MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2024-09-13 06:31:32,187 INFO L158 Benchmark]: CDTParser took 1.81ms. Allocated memory is still 44.0MB. Free memory was 27.6MB in the beginning and 27.5MB in the end (delta: 78.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:31:32,188 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 30.6MB in the beginning and 30.5MB in the end (delta: 168.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:31:32,188 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.52ms. Allocated memory is still 58.7MB. Free memory was 28.5MB in the beginning and 31.8MB in the end (delta: -3.3MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2024-09-13 06:31:32,188 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.88ms. Allocated memory is still 58.7MB. Free memory was 31.8MB in the beginning and 30.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:31:32,188 INFO L158 Benchmark]: Boogie Preprocessor took 46.30ms. Allocated memory is still 58.7MB. Free memory was 30.3MB in the beginning and 28.5MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 06:31:32,189 INFO L158 Benchmark]: RCFGBuilder took 331.72ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 28.5MB in the beginning and 49.6MB in the end (delta: -21.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-13 06:31:32,189 INFO L158 Benchmark]: TraceAbstraction took 2119.28ms. Allocated memory is still 77.6MB. Free memory was 49.2MB in the beginning and 39.8MB in the end (delta: 9.4MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2024-09-13 06:31:32,191 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.81ms. Allocated memory is still 44.0MB. Free memory was 27.6MB in the beginning and 27.5MB in the end (delta: 78.2kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 30.6MB in the beginning and 30.5MB in the end (delta: 168.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.52ms. Allocated memory is still 58.7MB. Free memory was 28.5MB in the beginning and 31.8MB in the end (delta: -3.3MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.88ms. Allocated memory is still 58.7MB. Free memory was 31.8MB in the beginning and 30.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.30ms. Allocated memory is still 58.7MB. Free memory was 30.3MB in the beginning and 28.5MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 331.72ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 28.5MB in the beginning and 49.6MB in the end (delta: -21.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2119.28ms. Allocated memory is still 77.6MB. Free memory was 49.2MB in the beginning and 39.8MB in the end (delta: 9.4MB). Peak memory consumption was 9.7MB. 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: 21]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 27]: 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: 21]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 79 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 97 IncrementalHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 23 mSDtfsCounter, 97 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=1, InterpolantAutomatonStates: 21, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 4 QuantifiedInterpolants, 360 SizeOfPredicates, 9 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 3/8 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 06:31:32,218 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