./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_nested_2.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 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-simple/recursified_nested_2.c ../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_nested_2.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-tmp.dk.referee-eval-de32597-m [2024-09-17 19:53:40,585 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 19:53:40,662 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 19:53:40,669 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 19:53:40,670 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 19:53:40,692 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 19:53:40,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 19:53:40,693 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 19:53:40,693 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 19:53:40,694 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 19:53:40,694 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 19:53:40,695 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 19:53:40,695 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 19:53:40,696 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 19:53:40,696 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 19:53:40,696 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 19:53:40,697 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 19:53:40,697 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 19:53:40,697 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 19:53:40,698 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 19:53:40,698 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 19:53:40,699 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 19:53:40,699 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 19:53:40,699 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 19:53:40,700 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 19:53:40,700 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 19:53:40,700 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 19:53:40,701 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 19:53:40,701 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 19:53:40,701 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 19:53:40,702 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 19:53:40,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 19:53:40,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:53:40,703 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 19:53:40,703 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 19:53:40,703 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 19:53:40,704 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 19:53:40,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 19:53:40,704 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 19:53:40,704 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 19:53:40,705 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 19:53:40,705 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 19:53:40,705 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-17 19:53:40,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 19:53:40,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 19:53:40,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 19:53:40,964 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 19:53:40,965 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 19:53:40,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-09-17 19:53:42,351 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 19:53:42,531 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 19:53:42,532 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-09-17 19:53:42,538 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/480e9f6ac/1206c3f840b04efa867ef1b85a5df5ed/FLAG448fa2761 [2024-09-17 19:53:42,933 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/480e9f6ac/1206c3f840b04efa867ef1b85a5df5ed [2024-09-17 19:53:42,939 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-17 19:53:42,939 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-17 19:53:42,940 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_nested_2.yml/witness-2.1.yml [2024-09-17 19:53:42,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 19:53:42,980 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-17 19:53:42,982 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 19:53:42,982 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 19:53:42,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 19:53:42,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:53:42" (1/2) ... [2024-09-17 19:53:42,988 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b758f07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:53:42, skipping insertion in model container [2024-09-17 19:53:42,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:53:42" (1/2) ... [2024-09-17 19:53:42,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5bd4b667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:53:42, skipping insertion in model container [2024-09-17 19:53:42,992 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:53:42" (2/2) ... [2024-09-17 19:53:42,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b758f07 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:53:42, skipping insertion in model container [2024-09-17 19:53:42,993 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:53:42" (2/2) ... [2024-09-17 19:53:42,997 INFO L90 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-09-17 19:53:43,020 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 19:53:43,186 WARN L248 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-simple/recursified_nested_2.c[1611,1624] [2024-09-17 19:53:43,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:53:43,211 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 19:53:43,228 WARN L248 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-simple/recursified_nested_2.c[1611,1624] [2024-09-17 19:53:43,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:53:43,246 INFO L204 MainTranslator]: Completed translation [2024-09-17 19:53:43,247 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:53:43 WrapperNode [2024-09-17 19:53:43,248 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 19:53:43,249 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 19:53:43,249 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 19:53:43,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 19:53:43,257 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 17.09 07:53:43" (1/1) ... [2024-09-17 19:53:43,264 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 17.09 07:53:43" (1/1) ... [2024-09-17 19:53:43,282 INFO L138 Inliner]: procedures = 13, calls = 29, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2024-09-17 19:53:43,282 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 19:53:43,283 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 19:53:43,283 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 19:53:43,283 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 19:53:43,293 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 17.09 07:53:43" (1/1) ... [2024-09-17 19:53:43,293 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 17.09 07:53:43" (1/1) ... [2024-09-17 19:53:43,300 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 17.09 07:53:43" (1/1) ... [2024-09-17 19:53:43,323 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 6, 6]. 43 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 1, 1]. The 4 writes are split as follows [0, 2, 2]. [2024-09-17 19:53:43,326 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 17.09 07:53:43" (1/1) ... [2024-09-17 19:53:43,326 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 17.09 07:53:43" (1/1) ... [2024-09-17 19:53:43,330 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 17.09 07:53:43" (1/1) ... [2024-09-17 19:53:43,334 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 17.09 07:53:43" (1/1) ... [2024-09-17 19:53:43,336 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 17.09 07:53:43" (1/1) ... [2024-09-17 19:53:43,340 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 17.09 07:53:43" (1/1) ... [2024-09-17 19:53:43,342 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 19:53:43,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 19:53:43,346 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 19:53:43,346 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 19:53:43,347 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 17.09 07:53:43" (1/1) ... [2024-09-17 19:53:43,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:53:43,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:53:43,379 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) [2024-09-17 19:53:43,387 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 [2024-09-17 19:53:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 19:53:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 19:53:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-17 19:53:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-17 19:53:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-17 19:53:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-17 19:53:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-17 19:53:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-17 19:53:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_20_to_21_0 [2024-09-17 19:53:43,432 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_20_to_21_0 [2024-09-17 19:53:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 19:53:43,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 19:53:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-17 19:53:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-17 19:53:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-17 19:53:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_21_to_21_0 [2024-09-17 19:53:43,432 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_21_to_21_0 [2024-09-17 19:53:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-17 19:53:43,512 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 19:53:43,514 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 19:53:43,660 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-17 19:53:43,660 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 19:53:43,696 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 19:53:43,696 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-17 19:53:43,697 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:53:43 BoogieIcfgContainer [2024-09-17 19:53:43,697 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 19:53:43,699 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 19:53:43,700 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 19:53:43,703 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 19:53:43,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 07:53:42" (1/4) ... [2024-09-17 19:53:43,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a37a4e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:53:43, skipping insertion in model container [2024-09-17 19:53:43,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:53:42" (2/4) ... [2024-09-17 19:53:43,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a37a4e2 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 17.09 07:53:43, skipping insertion in model container [2024-09-17 19:53:43,706 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 17.09 07:53:43" (3/4) ... [2024-09-17 19:53:43,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a37a4e2 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 17.09 07:53:43, skipping insertion in model container [2024-09-17 19:53:43,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:53:43" (4/4) ... [2024-09-17 19:53:43,709 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_2.c [2024-09-17 19:53:43,726 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 19:53:43,726 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 19:53:43,774 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 19:53:43,784 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;@3ac3d1fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 19:53:43,784 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 19:53:43,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-17 19:53:43,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-17 19:53:43,797 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:43,798 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:53:43,798 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:53:43,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:43,805 INFO L85 PathProgramCache]: Analyzing trace with hash 855928239, now seen corresponding path program 1 times [2024-09-17 19:53:43,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:43,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342852049] [2024-09-17 19:53:43,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:43,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:44,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:53:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:44,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:53:44,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:44,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342852049] [2024-09-17 19:53:44,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342852049] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:53:44,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:53:44,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:53:44,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452379492] [2024-09-17 19:53:44,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:53:44,400 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-17 19:53:44,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:53:44,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-17 19:53:44,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:53:44,431 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 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) [2024-09-17 19:53:44,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:53:44,567 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2024-09-17 19:53:44,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-17 19:53:44,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 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 [2024-09-17 19:53:44,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:53:44,576 INFO L225 Difference]: With dead ends: 25 [2024-09-17 19:53:44,576 INFO L226 Difference]: Without dead ends: 23 [2024-09-17 19:53:44,583 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-17 19:53:44,587 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:53:44,588 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 48 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:53:44,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-17 19:53:44,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-09-17 19:53:44,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-17 19:53:44,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-09-17 19:53:44,617 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 10 [2024-09-17 19:53:44,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:53:44,618 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-09-17 19:53:44,618 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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) [2024-09-17 19:53:44,618 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-09-17 19:53:44,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-17 19:53:44,619 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:44,620 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:53:44,620 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 19:53:44,620 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:53:44,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:44,621 INFO L85 PathProgramCache]: Analyzing trace with hash 255373073, now seen corresponding path program 1 times [2024-09-17 19:53:44,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:44,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610466913] [2024-09-17 19:53:44,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:44,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:44,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:53:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:44,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:44,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-17 19:53:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-17 19:53:44,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:44,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610466913] [2024-09-17 19:53:44,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610466913] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:53:44,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:53:44,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-17 19:53:44,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321328066] [2024-09-17 19:53:44,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:53:44,934 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-17 19:53:44,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:53:44,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-17 19:53:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-17 19:53:44,937 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-17 19:53:45,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:53:45,023 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2024-09-17 19:53:45,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-17 19:53:45,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2024-09-17 19:53:45,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:53:45,025 INFO L225 Difference]: With dead ends: 23 [2024-09-17 19:53:45,026 INFO L226 Difference]: Without dead ends: 23 [2024-09-17 19:53:45,026 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-17 19:53:45,028 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:53:45,028 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 58 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:53:45,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-17 19:53:45,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-17 19:53:45,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-17 19:53:45,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-09-17 19:53:45,036 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 21 [2024-09-17 19:53:45,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:53:45,036 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-09-17 19:53:45,036 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-17 19:53:45,037 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-09-17 19:53:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-17 19:53:45,038 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:45,038 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:53:45,039 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-17 19:53:45,039 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:53:45,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:45,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1037516303, now seen corresponding path program 1 times [2024-09-17 19:53:45,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:45,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006847469] [2024-09-17 19:53:45,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:45,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:45,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:53:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:45,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:45,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:45,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-17 19:53:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:45,640 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-17 19:53:45,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:45,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006847469] [2024-09-17 19:53:45,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006847469] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:53:45,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946710372] [2024-09-17 19:53:45,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:45,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:45,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:53:45,644 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) [2024-09-17 19:53:45,646 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 19:53:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:45,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-17 19:53:45,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:53:45,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-17 19:53:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-17 19:53:46,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:53:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 19:53:46,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946710372] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:53:46,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:53:46,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 25 [2024-09-17 19:53:46,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577580969] [2024-09-17 19:53:46,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:53:46,547 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-17 19:53:46,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:53:46,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-17 19:53:46,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2024-09-17 19:53:46,549 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (11), 7 states have call predecessors, (11), 10 states have call successors, (11) [2024-09-17 19:53:46,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:53:46,907 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-09-17 19:53:46,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-17 19:53:46,908 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (11), 7 states have call predecessors, (11), 10 states have call successors, (11) Word has length 26 [2024-09-17 19:53:46,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:53:46,908 INFO L225 Difference]: With dead ends: 27 [2024-09-17 19:53:46,909 INFO L226 Difference]: Without dead ends: 27 [2024-09-17 19:53:46,909 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2024-09-17 19:53:46,910 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 25 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:53:46,911 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 99 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 19:53:46,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-17 19:53:46,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-17 19:53:46,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-17 19:53:46,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-17 19:53:46,915 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 26 [2024-09-17 19:53:46,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:53:46,916 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-17 19:53:46,916 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (11), 7 states have call predecessors, (11), 10 states have call successors, (11) [2024-09-17 19:53:46,916 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-17 19:53:46,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-17 19:53:46,918 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:46,918 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:53:46,934 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-17 19:53:47,122 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:47,123 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:53:47,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:47,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1013053495, now seen corresponding path program 2 times [2024-09-17 19:53:47,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:47,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516463995] [2024-09-17 19:53:47,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:47,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:47,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:53:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:47,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:47,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:47,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:47,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-17 19:53:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:47,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:47,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:47,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:48,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-17 19:53:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:48,021 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-09-17 19:53:48,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:48,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516463995] [2024-09-17 19:53:48,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516463995] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:53:48,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840289703] [2024-09-17 19:53:48,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 19:53:48,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:48,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:53:48,032 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) [2024-09-17 19:53:48,038 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 19:53:48,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 19:53:48,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:53:48,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-17 19:53:48,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:53:48,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-17 19:53:48,370 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 47 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-17 19:53:48,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:53:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 47 proven. 13 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-17 19:53:49,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840289703] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:53:49,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:53:49,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 14] total 25 [2024-09-17 19:53:49,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816456022] [2024-09-17 19:53:49,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:53:49,609 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-17 19:53:49,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:53:49,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-17 19:53:49,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2024-09-17 19:53:49,612 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 25 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 8 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-17 19:53:49,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:53:49,817 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2024-09-17 19:53:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-17 19:53:49,818 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 8 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) Word has length 52 [2024-09-17 19:53:49,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:53:49,819 INFO L225 Difference]: With dead ends: 29 [2024-09-17 19:53:49,819 INFO L226 Difference]: Without dead ends: 29 [2024-09-17 19:53:49,819 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2024-09-17 19:53:49,820 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:53:49,820 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 122 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:53:49,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-17 19:53:49,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-17 19:53:49,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 7 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-17 19:53:49,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-09-17 19:53:49,825 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 52 [2024-09-17 19:53:49,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:53:49,826 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-09-17 19:53:49,826 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 8 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-17 19:53:49,826 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-09-17 19:53:49,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-17 19:53:49,827 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:49,827 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:53:49,845 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-17 19:53:50,031 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:50,032 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:53:50,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:50,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1464884653, now seen corresponding path program 3 times [2024-09-17 19:53:50,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:50,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595054762] [2024-09-17 19:53:50,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:50,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:50,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:53:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:50,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:50,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:50,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:50,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:50,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:53:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:50,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:50,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:50,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:50,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:50,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:53:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 8 proven. 75 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-09-17 19:53:50,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:50,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595054762] [2024-09-17 19:53:50,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595054762] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:53:50,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140081530] [2024-09-17 19:53:50,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 19:53:50,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:50,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:53:50,970 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:53:50,971 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 19:53:51,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-17 19:53:51,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:53:51,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-17 19:53:51,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:53:51,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-17 19:53:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-09-17 19:53:51,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:53:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-09-17 19:53:52,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140081530] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:53:52,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:53:52,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 14] total 34 [2024-09-17 19:53:52,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610227674] [2024-09-17 19:53:52,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:53:52,158 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-17 19:53:52,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:53:52,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-17 19:53:52,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2024-09-17 19:53:52,160 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 34 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 28 states have internal predecessors, (49), 13 states have call successors, (17), 7 states have call predecessors, (17), 12 states have return successors, (18), 12 states have call predecessors, (18), 13 states have call successors, (18) [2024-09-17 19:53:52,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:53:52,453 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-09-17 19:53:52,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-17 19:53:52,456 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 28 states have internal predecessors, (49), 13 states have call successors, (17), 7 states have call predecessors, (17), 12 states have return successors, (18), 12 states have call predecessors, (18), 13 states have call successors, (18) Word has length 62 [2024-09-17 19:53:52,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:53:52,457 INFO L225 Difference]: With dead ends: 33 [2024-09-17 19:53:52,457 INFO L226 Difference]: Without dead ends: 33 [2024-09-17 19:53:52,458 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=290, Invalid=1602, Unknown=0, NotChecked=0, Total=1892 [2024-09-17 19:53:52,459 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:53:52,459 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 109 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:53:52,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-17 19:53:52,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-17 19:53:52,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (11), 9 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-17 19:53:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-09-17 19:53:52,464 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 62 [2024-09-17 19:53:52,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:53:52,464 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-09-17 19:53:52,465 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 28 states have internal predecessors, (49), 13 states have call successors, (17), 7 states have call predecessors, (17), 12 states have return successors, (18), 12 states have call predecessors, (18), 13 states have call successors, (18) [2024-09-17 19:53:52,465 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-09-17 19:53:52,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-17 19:53:52,467 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:52,467 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:53:52,484 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-17 19:53:52,668 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:52,668 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:53:52,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:52,669 INFO L85 PathProgramCache]: Analyzing trace with hash -365015879, now seen corresponding path program 4 times [2024-09-17 19:53:52,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:52,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275320111] [2024-09-17 19:53:52,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:52,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:53,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:53:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:53,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:53,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:53,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:53,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:53,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:53,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-17 19:53:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:54,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:54,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:54,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:54,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:54,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:54,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-17 19:53:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:54,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:54,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:54,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:54,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:54,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:54,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-17 19:53:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 6 proven. 212 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-09-17 19:53:54,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:54,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275320111] [2024-09-17 19:53:54,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275320111] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:53:54,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010777980] [2024-09-17 19:53:54,079 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-17 19:53:54,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:54,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:53:54,081 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:53:54,082 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-17 19:53:54,219 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-17 19:53:54,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:53:54,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-09-17 19:53:54,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:53:54,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-17 19:53:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 363 proven. 24 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-09-17 19:53:54,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:53:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 127 proven. 165 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2024-09-17 19:53:56,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010777980] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:53:56,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:53:56,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 22] total 35 [2024-09-17 19:53:56,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269764668] [2024-09-17 19:53:56,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:53:56,740 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-17 19:53:56,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:53:56,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-17 19:53:56,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=947, Unknown=0, NotChecked=0, Total=1190 [2024-09-17 19:53:56,742 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 35 states, 27 states have (on average 2.0) internal successors, (54), 28 states have internal predecessors, (54), 10 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2024-09-17 19:53:56,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:53:56,912 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-09-17 19:53:56,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-17 19:53:56,914 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 27 states have (on average 2.0) internal successors, (54), 28 states have internal predecessors, (54), 10 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) Word has length 103 [2024-09-17 19:53:56,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:53:56,915 INFO L225 Difference]: With dead ends: 35 [2024-09-17 19:53:56,915 INFO L226 Difference]: Without dead ends: 35 [2024-09-17 19:53:56,915 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 217 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=331, Invalid=1151, Unknown=0, NotChecked=0, Total=1482 [2024-09-17 19:53:56,916 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:53:56,916 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 181 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:53:56,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-17 19:53:56,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-09-17 19:53:56,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-17 19:53:56,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-09-17 19:53:56,921 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 103 [2024-09-17 19:53:56,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:53:56,922 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-09-17 19:53:56,922 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 27 states have (on average 2.0) internal successors, (54), 28 states have internal predecessors, (54), 10 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2024-09-17 19:53:56,922 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-09-17 19:53:56,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-09-17 19:53:56,923 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:56,923 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 15, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:53:56,936 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-17 19:53:57,124 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:57,125 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:53:57,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:57,125 INFO L85 PathProgramCache]: Analyzing trace with hash 620375637, now seen corresponding path program 5 times [2024-09-17 19:53:57,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:57,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809921221] [2024-09-17 19:53:57,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:57,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:57,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:53:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-17 19:53:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-17 19:53:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-17 19:53:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:58,807 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 6 proven. 307 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-09-17 19:53:58,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:58,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809921221] [2024-09-17 19:53:58,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809921221] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:53:58,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265132308] [2024-09-17 19:53:58,807 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-17 19:53:58,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:58,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:53:58,809 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:53:58,810 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-17 19:53:59,026 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-17 19:53:59,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:53:59,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-17 19:53:59,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:53:59,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-17 19:53:59,364 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 346 proven. 35 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-09-17 19:53:59,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:54:01,760 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 6 proven. 414 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-09-17 19:54:01,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265132308] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:54:01,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:54:01,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 26] total 39 [2024-09-17 19:54:01,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605143900] [2024-09-17 19:54:01,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:54:01,761 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-17 19:54:01,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:54:01,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-17 19:54:01,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2024-09-17 19:54:01,762 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 39 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 31 states have internal predecessors, (57), 10 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2024-09-17 19:54:01,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:54:01,917 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2024-09-17 19:54:01,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-17 19:54:01,918 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 31 states have internal predecessors, (57), 10 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) Word has length 118 [2024-09-17 19:54:01,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:54:01,918 INFO L225 Difference]: With dead ends: 37 [2024-09-17 19:54:01,918 INFO L226 Difference]: Without dead ends: 37 [2024-09-17 19:54:01,919 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 249 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=413, Invalid=1393, Unknown=0, NotChecked=0, Total=1806 [2024-09-17 19:54:01,920 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 14 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:54:01,920 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 154 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:54:01,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-17 19:54:01,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-17 19:54:01,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 11 states have return successors, (13), 11 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-17 19:54:01,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-09-17 19:54:01,928 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 118 [2024-09-17 19:54:01,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:54:01,930 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-09-17 19:54:01,930 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 31 states have internal predecessors, (57), 10 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2024-09-17 19:54:01,930 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-09-17 19:54:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-09-17 19:54:01,934 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:54:01,934 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 18, 18, 18, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:54:01,952 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-17 19:54:02,134 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-17 19:54:02,134 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:54:02,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:54:02,135 INFO L85 PathProgramCache]: Analyzing trace with hash -149039543, now seen corresponding path program 6 times [2024-09-17 19:54:02,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:54:02,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936559899] [2024-09-17 19:54:02,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:54:02,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:54:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:02,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:54:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2024-09-17 19:54:03,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:54:03,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936559899] [2024-09-17 19:54:03,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936559899] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:54:03,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168037995] [2024-09-17 19:54:03,690 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-17 19:54:03,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:54:03,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:54:03,693 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:54:03,695 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-17 19:54:03,937 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-17 19:54:03,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:54:03,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-17 19:54:03,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:54:03,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-17 19:54:04,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2024-09-17 19:54:04,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:54:05,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2024-09-17 19:54:05,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168037995] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:54:05,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:54:05,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 18] total 37 [2024-09-17 19:54:05,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41473020] [2024-09-17 19:54:05,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:54:05,336 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-17 19:54:05,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:54:05,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-17 19:54:05,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1062, Unknown=0, NotChecked=0, Total=1332 [2024-09-17 19:54:05,338 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 37 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 30 states have internal predecessors, (47), 13 states have call successors, (16), 8 states have call predecessors, (16), 13 states have return successors, (17), 16 states have call predecessors, (17), 13 states have call successors, (17) [2024-09-17 19:54:05,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:54:05,538 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2024-09-17 19:54:05,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-17 19:54:05,538 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 30 states have internal predecessors, (47), 13 states have call successors, (16), 8 states have call predecessors, (16), 13 states have return successors, (17), 16 states have call predecessors, (17), 13 states have call successors, (17) Word has length 133 [2024-09-17 19:54:05,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:54:05,539 INFO L225 Difference]: With dead ends: 40 [2024-09-17 19:54:05,539 INFO L226 Difference]: Without dead ends: 40 [2024-09-17 19:54:05,540 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=350, Invalid=1210, Unknown=0, NotChecked=0, Total=1560 [2024-09-17 19:54:05,540 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:54:05,541 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 102 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:54:05,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-17 19:54:05,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2024-09-17 19:54:05,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 12 states have return successors, (14), 12 states have call predecessors, (14), 4 states have call successors, (14) [2024-09-17 19:54:05,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-09-17 19:54:05,551 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 133 [2024-09-17 19:54:05,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:54:05,552 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-09-17 19:54:05,552 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 30 states have internal predecessors, (47), 13 states have call successors, (16), 8 states have call predecessors, (16), 13 states have return successors, (17), 16 states have call predecessors, (17), 13 states have call successors, (17) [2024-09-17 19:54:05,552 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-09-17 19:54:05,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-09-17 19:54:05,556 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:54:05,557 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:54:05,574 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-17 19:54:05,757 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:54:05,757 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:54:05,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:54:05,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1739371329, now seen corresponding path program 7 times [2024-09-17 19:54:05,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:54:05,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740231758] [2024-09-17 19:54:05,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:54:05,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:54:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:06,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:54:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:07,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:07,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:07,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:07,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:07,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:07,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:07,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:07,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:07,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:07,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:07,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:07,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:07,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:07,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:07,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:07,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:08,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:08,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:08,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:08,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:08,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:08,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:08,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:08,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:08,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:08,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:08,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:08,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:08,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:08,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:08,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:08,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 1802 trivial. 0 not checked. [2024-09-17 19:54:08,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:54:08,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740231758] [2024-09-17 19:54:08,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740231758] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:54:08,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285941817] [2024-09-17 19:54:08,572 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-17 19:54:08,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:54:08,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:54:08,574 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:54:08,576 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-17 19:54:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:08,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-17 19:54:08,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:54:08,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-17 19:54:09,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1822 trivial. 0 not checked. [2024-09-17 19:54:09,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:54:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1788 trivial. 0 not checked. [2024-09-17 19:54:11,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285941817] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:54:11,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:54:11,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 22] total 49 [2024-09-17 19:54:11,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426031185] [2024-09-17 19:54:11,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:54:11,007 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-17 19:54:11,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:54:11,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-17 19:54:11,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=1919, Unknown=0, NotChecked=0, Total=2352 [2024-09-17 19:54:11,013 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 49 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 41 states have internal predecessors, (59), 19 states have call successors, (21), 9 states have call predecessors, (21), 16 states have return successors, (23), 22 states have call predecessors, (23), 19 states have call successors, (23) [2024-09-17 19:54:11,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:54:11,443 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2024-09-17 19:54:11,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-17 19:54:11,443 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 41 states have internal predecessors, (59), 19 states have call successors, (21), 9 states have call predecessors, (21), 16 states have return successors, (23), 22 states have call predecessors, (23), 19 states have call successors, (23) Word has length 174 [2024-09-17 19:54:11,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:54:11,445 INFO L225 Difference]: With dead ends: 46 [2024-09-17 19:54:11,445 INFO L226 Difference]: Without dead ends: 46 [2024-09-17 19:54:11,446 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1249 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=621, Invalid=2571, Unknown=0, NotChecked=0, Total=3192 [2024-09-17 19:54:11,447 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 59 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:54:11,447 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 61 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 19:54:11,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-17 19:54:11,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-09-17 19:54:11,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (17), 15 states have call predecessors, (17), 4 states have call successors, (17) [2024-09-17 19:54:11,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2024-09-17 19:54:11,453 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 174 [2024-09-17 19:54:11,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:54:11,453 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2024-09-17 19:54:11,454 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 41 states have internal predecessors, (59), 19 states have call successors, (21), 9 states have call predecessors, (21), 16 states have return successors, (23), 22 states have call predecessors, (23), 19 states have call successors, (23) [2024-09-17 19:54:11,454 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2024-09-17 19:54:11,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-09-17 19:54:11,456 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:54:11,456 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 30, 30, 30, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:54:11,474 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-17 19:54:11,660 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:54:11,661 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:54:11,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:54:11,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1394733523, now seen corresponding path program 1 times [2024-09-17 19:54:11,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:54:11,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740491904] [2024-09-17 19:54:11,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:54:11,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:54:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:12,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:54:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:13,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:13,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:13,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:13,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:13,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:13,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:13,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:13,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:14,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:14,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:14,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:14,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:14,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:14,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:14,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:14,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:14,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:14,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:14,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:14,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:14,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:14,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:14,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:14,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:15,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:15,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:15,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:15,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:15,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:15,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:15,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:15,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:15,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:15,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:15,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:15,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:15,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:15,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:15,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:15,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 16 proven. 35 refuted. 0 times theorem prover too weak. 2854 trivial. 0 not checked. [2024-09-17 19:54:15,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:54:15,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740491904] [2024-09-17 19:54:15,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740491904] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:54:15,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355564594] [2024-09-17 19:54:15,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:54:15,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:54:15,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:54:15,460 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:54:15,461 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-17 19:54:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:15,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-17 19:54:15,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:54:15,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-17 19:54:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2870 trivial. 0 not checked. [2024-09-17 19:54:16,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:54:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 2815 trivial. 0 not checked. [2024-09-17 19:54:18,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355564594] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:54:18,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:54:18,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 26] total 46 [2024-09-17 19:54:18,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704420454] [2024-09-17 19:54:18,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:54:18,626 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-17 19:54:18,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:54:18,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-17 19:54:18,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=1676, Unknown=0, NotChecked=0, Total=2070 [2024-09-17 19:54:18,628 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 46 states, 36 states have (on average 1.5) internal successors, (54), 37 states have internal predecessors, (54), 18 states have call successors, (21), 10 states have call predecessors, (21), 14 states have return successors, (26), 20 states have call predecessors, (26), 18 states have call successors, (26) [2024-09-17 19:54:18,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:54:18,922 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2024-09-17 19:54:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-17 19:54:18,923 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 36 states have (on average 1.5) internal successors, (54), 37 states have internal predecessors, (54), 18 states have call successors, (21), 10 states have call predecessors, (21), 14 states have return successors, (26), 20 states have call predecessors, (26), 18 states have call successors, (26) Word has length 215 [2024-09-17 19:54:18,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:54:18,924 INFO L225 Difference]: With dead ends: 43 [2024-09-17 19:54:18,924 INFO L226 Difference]: Without dead ends: 43 [2024-09-17 19:54:18,925 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 478 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=577, Invalid=2179, Unknown=0, NotChecked=0, Total=2756 [2024-09-17 19:54:18,926 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:54:18,926 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 165 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 19:54:18,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-17 19:54:18,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-17 19:54:18,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (16), 14 states have call predecessors, (16), 4 states have call successors, (16) [2024-09-17 19:54:18,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2024-09-17 19:54:18,930 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 215 [2024-09-17 19:54:18,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:54:18,931 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2024-09-17 19:54:18,931 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 36 states have (on average 1.5) internal successors, (54), 37 states have internal predecessors, (54), 18 states have call successors, (21), 10 states have call predecessors, (21), 14 states have return successors, (26), 20 states have call predecessors, (26), 18 states have call successors, (26) [2024-09-17 19:54:18,931 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2024-09-17 19:54:18,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-09-17 19:54:18,933 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:54:18,934 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 36, 36, 36, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:54:18,952 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-17 19:54:19,137 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:54:19,138 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:54:19,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:54:19,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1043833273, now seen corresponding path program 8 times [2024-09-17 19:54:19,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:54:19,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304065607] [2024-09-17 19:54:19,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:54:19,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:54:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:19,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:54:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:20,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:20,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:20,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:20,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:20,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:20,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:20,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:20,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:21,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:21,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:21,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:21,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:21,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:21,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:21,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:21,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:22,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:23,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:23,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:23,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:23,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:23,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:23,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 937 proven. 34 refuted. 0 times theorem prover too weak. 3232 trivial. 0 not checked. [2024-09-17 19:54:23,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:54:23,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304065607] [2024-09-17 19:54:23,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304065607] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:54:23,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509997725] [2024-09-17 19:54:23,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 19:54:23,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:54:23,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:54:23,373 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:54:23,376 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-17 19:54:23,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 19:54:23,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:54:23,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-09-17 19:54:23,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:54:23,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-17 19:54:24,031 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 [2024-09-17 19:54:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 1171 proven. 81 refuted. 0 times theorem prover too weak. 2951 trivial. 0 not checked. [2024-09-17 19:54:24,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:54:24,985 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 25 treesize of output 21 [2024-09-17 19:54:25,350 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 25 treesize of output 21 [2024-09-17 19:54:25,694 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 25 treesize of output 21 [2024-09-17 19:54:26,001 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 25 treesize of output 21 [2024-09-17 19:54:26,268 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 25 treesize of output 21 [2024-09-17 19:54:26,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509997725] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:54:26,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:54:26,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 23 [2024-09-17 19:54:26,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869098055] [2024-09-17 19:54:26,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:54:26,971 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-17 19:54:26,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:54:26,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-17 19:54:26,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2024-09-17 19:54:26,972 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 23 states, 20 states have (on average 2.05) internal successors, (41), 22 states have internal predecessors, (41), 8 states have call successors, (15), 3 states have call predecessors, (15), 11 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-17 19:54:27,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:54:27,374 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2024-09-17 19:54:27,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-17 19:54:27,377 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.05) internal successors, (41), 22 states have internal predecessors, (41), 8 states have call successors, (15), 3 states have call predecessors, (15), 11 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) Word has length 256 [2024-09-17 19:54:27,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:54:27,379 INFO L225 Difference]: With dead ends: 46 [2024-09-17 19:54:27,379 INFO L226 Difference]: Without dead ends: 45 [2024-09-17 19:54:27,379 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=185, Invalid=1375, Unknown=0, NotChecked=0, Total=1560 [2024-09-17 19:54:27,380 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 33 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:54:27,380 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 202 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 19:54:27,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-17 19:54:27,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-09-17 19:54:27,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 26 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (16), 14 states have call predecessors, (16), 4 states have call successors, (16) [2024-09-17 19:54:27,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2024-09-17 19:54:27,384 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 256 [2024-09-17 19:54:27,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:54:27,385 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2024-09-17 19:54:27,385 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.05) internal successors, (41), 22 states have internal predecessors, (41), 8 states have call successors, (15), 3 states have call predecessors, (15), 11 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-17 19:54:27,385 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2024-09-17 19:54:27,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-09-17 19:54:27,388 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:54:27,388 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 36, 36, 36, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:54:27,406 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-17 19:54:27,588 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-17 19:54:27,589 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:54:27,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:54:27,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1043831351, now seen corresponding path program 2 times [2024-09-17 19:54:27,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:54:27,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209005951] [2024-09-17 19:54:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:54:27,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:54:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:28,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:54:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:28,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:28,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:28,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:28,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:28,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:28,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:28,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:28,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:28,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:28,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:28,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:28,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:28,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:28,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:28,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:28,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:54:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 19:54:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:54:29,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 4165 trivial. 0 not checked. [2024-09-17 19:54:29,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:54:29,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209005951] [2024-09-17 19:54:29,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209005951] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:54:29,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645969330] [2024-09-17 19:54:29,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 19:54:29,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:54:29,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:54:29,798 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:54:29,799 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-17 19:54:30,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 19:54:30,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:54:30,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-17 19:54:30,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:54:30,322 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 36 treesize of output 13 [2024-09-17 19:54:30,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 1186 proven. 18 refuted. 0 times theorem prover too weak. 2999 trivial. 0 not checked. [2024-09-17 19:54:30,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:54:31,406 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-17 19:54:31,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-17 19:54:31,794 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-17 19:54:31,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-17 19:54:32,091 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-17 19:54:32,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-17 19:54:32,349 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-17 19:54:32,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-17 19:54:32,546 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-17 19:54:32,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-17 19:54:32,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645969330] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:54:32,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:54:32,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2024-09-17 19:54:32,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847552359] [2024-09-17 19:54:32,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:54:32,829 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-17 19:54:32,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:54:32,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-17 19:54:32,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2024-09-17 19:54:32,831 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-17 19:54:36,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-17 19:54:37,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:54:37,081 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2024-09-17 19:54:37,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-17 19:54:37,081 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 256 [2024-09-17 19:54:37,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:54:37,082 INFO L225 Difference]: With dead ends: 44 [2024-09-17 19:54:37,082 INFO L226 Difference]: Without dead ends: 0 [2024-09-17 19:54:37,082 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 373 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2024-09-17 19:54:37,084 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 23 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:54:37,084 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 28 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 188 Invalid, 3 Unknown, 0 Unchecked, 4.1s Time] [2024-09-17 19:54:37,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-17 19:54:37,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-17 19:54:37,085 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) [2024-09-17 19:54:37,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-17 19:54:37,085 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 256 [2024-09-17 19:54:37,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:54:37,085 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-17 19:54:37,085 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-17 19:54:37,085 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-17 19:54:37,085 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-17 19:54:37,088 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-17 19:54:37,103 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-17 19:54:37,289 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-17 19:54:37,291 INFO L408 BasicCegarLoop]: Path program histogram: [8, 2, 1, 1] [2024-09-17 19:54:37,293 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-17 19:54:37,295 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 07:54:37 BoogieIcfgContainer [2024-09-17 19:54:37,295 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-17 19:54:37,296 INFO L158 Benchmark]: Toolchain (without parser) took 54315.44ms. Allocated memory was 163.6MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 118.3MB in the beginning and 1.1GB in the end (delta: -951.9MB). Peak memory consumption was 240.1MB. Max. memory is 16.1GB. [2024-09-17 19:54:37,296 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 163.6MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:54:37,296 INFO L158 Benchmark]: Witness Parser took 0.11ms. Allocated memory is still 163.6MB. Free memory was 120.5MB in the beginning and 120.2MB in the end (delta: 313.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:54:37,296 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.51ms. Allocated memory is still 163.6MB. Free memory was 118.3MB in the beginning and 106.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-17 19:54:37,296 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.96ms. Allocated memory is still 163.6MB. Free memory was 106.2MB in the beginning and 104.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:54:37,297 INFO L158 Benchmark]: Boogie Preprocessor took 62.14ms. Allocated memory is still 163.6MB. Free memory was 104.6MB in the beginning and 103.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:54:37,297 INFO L158 Benchmark]: RCFGBuilder took 351.07ms. Allocated memory is still 163.6MB. Free memory was 103.0MB in the beginning and 89.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-17 19:54:37,297 INFO L158 Benchmark]: TraceAbstraction took 53595.86ms. Allocated memory was 163.6MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 89.5MB in the beginning and 1.1GB in the end (delta: -980.7MB). Peak memory consumption was 210.8MB. Max. memory is 16.1GB. [2024-09-17 19:54:37,299 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 163.6MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.11ms. Allocated memory is still 163.6MB. Free memory was 120.5MB in the beginning and 120.2MB in the end (delta: 313.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.51ms. Allocated memory is still 163.6MB. Free memory was 118.3MB in the beginning and 106.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.96ms. Allocated memory is still 163.6MB. Free memory was 106.2MB in the beginning and 104.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.14ms. Allocated memory is still 163.6MB. Free memory was 104.6MB in the beginning and 103.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 351.07ms. Allocated memory is still 163.6MB. Free memory was 103.0MB in the beginning and 89.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 53595.86ms. Allocated memory was 163.6MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 89.5MB in the beginning and 1.1GB in the end (delta: -980.7MB). Peak memory consumption was 210.8MB. 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: 69]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.5s, OverallIterations: 12, TraceHistogramMax: 42, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 294 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 288 mSDsluCounter, 1329 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1186 mSDsCounter, 156 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2382 IncrementalHoareTripleChecker+Invalid, 2541 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 156 mSolverCounterUnsat, 143 mSDtfsCounter, 2382 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3070 GetRequests, 2646 SyntacticMatches, 22 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5592 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=9, InterpolantAutomatonStates: 154, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 41.5s InterpolantComputationTime, 2821 NumberOfCodeBlocks, 2729 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 3674 ConstructedInterpolants, 34 QuantifiedInterpolants, 13922 SizeOfPredicates, 132 NumberOfNonLiveVariables, 5536 ConjunctsInSsa, 687 ConjunctsInUnsatCore, 30 InterpolantComputations, 2 PerfectInterpolantSequences, 36871/38647 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-17 19:54:37,345 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 Writing output log to file Ultimate.log Result: TRUE