./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/id_i10_o10-2.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/id_i10_o10-2.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/recursive-simple/id_i10_o10-2.c ../results/automizer-verification-files/SV-COMP24_unreach-call/id_i10_o10-2.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-dev-5189fb6-m [2024-09-13 06:27:13,993 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 06:27:14,081 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 06:27:14,091 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 06:27:14,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 06:27:14,115 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 06:27:14,116 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 06:27:14,116 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 06:27:14,117 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 06:27:14,117 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 06:27:14,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 06:27:14,118 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 06:27:14,119 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 06:27:14,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 06:27:14,120 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 06:27:14,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 06:27:14,122 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 06:27:14,122 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 06:27:14,123 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 06:27:14,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 06:27:14,123 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 06:27:14,124 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 06:27:14,124 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 06:27:14,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 06:27:14,125 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 06:27:14,125 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 06:27:14,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 06:27:14,125 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 06:27:14,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 06:27:14,126 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 06:27:14,127 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 06:27:14,127 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 06:27:14,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:27:14,128 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 06:27:14,128 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 06:27:14,128 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 06:27:14,129 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 06:27:14,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 06:27:14,129 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 06:27:14,129 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 06:27:14,130 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 06:27:14,130 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 06:27:14,131 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 06:27:14,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 06:27:14,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 06:27:14,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 06:27:14,424 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 06:27:14,426 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 06:27:14,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/id_i10_o10-2.yml/witness-2.1.yml [2024-09-13 06:27:14,485 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 06:27:14,485 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 06:27:14,486 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/id_i10_o10-2.c [2024-09-13 06:27:16,062 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 06:27:16,247 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 06:27:16,247 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/id_i10_o10-2.c [2024-09-13 06:27:16,254 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/4542baa05/356fdba04d7143609fa953be6cefd901/FLAG8cf6f61c2 [2024-09-13 06:27:16,643 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/4542baa05/356fdba04d7143609fa953be6cefd901 [2024-09-13 06:27:16,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 06:27:16,645 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 06:27:16,646 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 06:27:16,646 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 06:27:16,652 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 06:27:16,652 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:27:14" (1/2) ... [2024-09-13 06:27:16,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75670a80 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:27:16, skipping insertion in model container [2024-09-13 06:27:16,653 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:27:14" (1/2) ... [2024-09-13 06:27:16,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@727984ef and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:27:16, skipping insertion in model container [2024-09-13 06:27:16,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:27:16" (2/2) ... [2024-09-13 06:27:16,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75670a80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:16, skipping insertion in model container [2024-09-13 06:27:16,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:27:16" (2/2) ... [2024-09-13 06:27:16,664 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 06:27:16,665 INFO L1541 ArrayList]: Function contract at [L6]: requires null, ensures (((((((((((((3 == \result) && (\old(x) == 3)) || ((\old(x) == 6) && (6 == \result))) || ((9 == \result) && (\old(x) == 9))) || ((2 == \result) && (\old(x) == 2))) || ((10 == \result) && (\old(x) == 10))) || ((5 == \result) && (5 == \old(x)))) || ((8 == \result) && (\old(x) == 8))) || ((7 == \result) && (7 == \old(x)))) || (10 < \old(x))) || ((\result == 1) && (\old(x) == 1))) || ((\old(x) == 4) && (4 == \result))) || ((\result == 0) && (\old(x) == 0))) [2024-09-13 06:27:16,682 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 06:27:16,822 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/id_i10_o10-2.c[454,467] [2024-09-13 06:27:16,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:27:16,839 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global [2024-09-13 06:27:16,882 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/id_i10_o10-2.c[454,467] [2024-09-13 06:27:16,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:27:16,899 INFO L204 MainTranslator]: Completed translation [2024-09-13 06:27:16,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:16 WrapperNode [2024-09-13 06:27:16,900 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 06:27:16,901 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 06:27:16,901 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 06:27:16,901 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 06:27:16,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:16" (1/1) ... [2024-09-13 06:27:16,916 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:16" (1/1) ... [2024-09-13 06:27:16,932 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2024-09-13 06:27:16,932 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 06:27:16,933 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 06:27:16,933 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 06:27:16,934 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 06:27:16,943 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:16" (1/1) ... [2024-09-13 06:27:16,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:16" (1/1) ... [2024-09-13 06:27:16,945 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:16" (1/1) ... [2024-09-13 06:27:16,955 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure id is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 06:27:16,956 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:16" (1/1) ... [2024-09-13 06:27:16,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:16" (1/1) ... [2024-09-13 06:27:16,964 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:16" (1/1) ... [2024-09-13 06:27:16,966 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:16" (1/1) ... [2024-09-13 06:27:16,966 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:16" (1/1) ... [2024-09-13 06:27:16,967 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:16" (1/1) ... [2024-09-13 06:27:16,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 06:27:16,973 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 06:27:16,973 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 06:27:16,973 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 06:27:16,974 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:16" (1/1) ... [2024-09-13 06:27:16,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:27:16,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:27:17,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 06:27:17,011 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 06:27:17,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 06:27:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 06:27:17,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 06:27:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 06:27:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure id [2024-09-13 06:27:17,061 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2024-09-13 06:27:17,129 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 06:27:17,132 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 06:27:17,270 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-09-13 06:27:17,270 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 06:27:17,294 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 06:27:17,294 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 06:27:17,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:27:17 BoogieIcfgContainer [2024-09-13 06:27:17,295 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 06:27:17,297 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 06:27:17,297 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 06:27:17,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 06:27:17,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:27:14" (1/4) ... [2024-09-13 06:27:17,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213bcec6 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:27:17, skipping insertion in model container [2024-09-13 06:27:17,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 06:27:16" (2/4) ... [2024-09-13 06:27:17,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213bcec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 06:27:17, skipping insertion in model container [2024-09-13 06:27:17,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:16" (3/4) ... [2024-09-13 06:27:17,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213bcec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 06:27:17, skipping insertion in model container [2024-09-13 06:27:17,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:27:17" (4/4) ... [2024-09-13 06:27:17,305 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i10_o10-2.c [2024-09-13 06:27:17,321 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 06:27:17,322 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-09-13 06:27:17,365 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 06:27:17,373 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;@6e65c4c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 06:27:17,373 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-13 06:27:17,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:27:17,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 06:27:17,384 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:27:17,384 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 06:27:17,385 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:27:17,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:27:17,392 INFO L85 PathProgramCache]: Analyzing trace with hash 56172024, now seen corresponding path program 1 times [2024-09-13 06:27:17,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:27:17,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108206424] [2024-09-13 06:27:17,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:17,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:27:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:17,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:17,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:27:17,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108206424] [2024-09-13 06:27:17,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108206424] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:27:17,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:27:17,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 06:27:17,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982001167] [2024-09-13 06:27:17,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:27:17,665 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 06:27:17,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:27:17,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 06:27:17,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:27:17,711 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:27:17,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:27:17,866 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-09-13 06:27:17,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 06:27:17,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-13 06:27:17,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:27:17,874 INFO L225 Difference]: With dead ends: 22 [2024-09-13 06:27:17,874 INFO L226 Difference]: Without dead ends: 20 [2024-09-13 06:27:17,876 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:27:17,879 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:27:17,880 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 34 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:27:17,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-13 06:27:17,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2024-09-13 06:27:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 06:27:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-09-13 06:27:17,914 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 5 [2024-09-13 06:27:17,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:27:17,915 INFO L474 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-09-13 06:27:17,915 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:27:17,916 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-09-13 06:27:17,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-13 06:27:17,917 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:27:17,917 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-09-13 06:27:17,917 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 06:27:17,918 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:27:17,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:27:17,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1615449573, now seen corresponding path program 1 times [2024-09-13 06:27:17,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:27:17,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461090254] [2024-09-13 06:27:17,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:17,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:27:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:18,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:27:18,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461090254] [2024-09-13 06:27:18,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461090254] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:27:18,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109648902] [2024-09-13 06:27:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:18,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:18,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:27:18,093 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:27:18,097 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 06:27:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:18,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 06:27:18,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:27:18,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:18,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:27:18,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:18,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109648902] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:27:18,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:27:18,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-09-13 06:27:18,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760962856] [2024-09-13 06:27:18,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:27:18,308 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-13 06:27:18,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:27:18,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-13 06:27:18,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-13 06:27:18,309 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:27:18,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:27:18,498 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2024-09-13 06:27:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 06:27:18,501 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-09-13 06:27:18,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:27:18,502 INFO L225 Difference]: With dead ends: 41 [2024-09-13 06:27:18,502 INFO L226 Difference]: Without dead ends: 41 [2024-09-13 06:27:18,502 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-13 06:27:18,503 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 39 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:27:18,504 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 69 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:27:18,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-13 06:27:18,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2024-09-13 06:27:18,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 06:27:18,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-09-13 06:27:18,517 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 8 [2024-09-13 06:27:18,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:27:18,517 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-09-13 06:27:18,518 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:27:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-09-13 06:27:18,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-13 06:27:18,519 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:27:18,519 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2024-09-13 06:27:18,539 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 06:27:18,720 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:18,720 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:27:18,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:27:18,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1295816760, now seen corresponding path program 2 times [2024-09-13 06:27:18,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:27:18,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084305992] [2024-09-13 06:27:18,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:18,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:27:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:18,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:27:18,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084305992] [2024-09-13 06:27:18,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084305992] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:27:18,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526150553] [2024-09-13 06:27:18,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 06:27:18,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:18,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:27:18,979 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:27:18,981 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 06:27:19,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-13 06:27:19,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:27:19,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 06:27:19,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:27:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-13 06:27:19,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 06:27:19,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526150553] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:27:19,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 06:27:19,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 15 [2024-09-13 06:27:19,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263788577] [2024-09-13 06:27:19,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:27:19,059 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 06:27:19,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:27:19,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 06:27:19,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-09-13 06:27:19,062 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:27:19,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:27:19,104 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-09-13 06:27:19,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 06:27:19,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-09-13 06:27:19,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:27:19,109 INFO L225 Difference]: With dead ends: 39 [2024-09-13 06:27:19,109 INFO L226 Difference]: Without dead ends: 39 [2024-09-13 06:27:19,109 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-09-13 06:27:19,110 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:27:19,111 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 13 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:27:19,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-13 06:27:19,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2024-09-13 06:27:19,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 06:27:19,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-09-13 06:27:19,125 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 17 [2024-09-13 06:27:19,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:27:19,125 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-09-13 06:27:19,125 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:27:19,125 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-09-13 06:27:19,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-13 06:27:19,126 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:27:19,127 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:27:19,145 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 06:27:19,331 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:19,332 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:27:19,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:27:19,333 INFO L85 PathProgramCache]: Analyzing trace with hash 511038535, now seen corresponding path program 1 times [2024-09-13 06:27:19,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:27:19,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057977365] [2024-09-13 06:27:19,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:19,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:27:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:19,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-13 06:27:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:19,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:27:19,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057977365] [2024-09-13 06:27:19,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057977365] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:27:19,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948295714] [2024-09-13 06:27:19,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:19,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:19,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:27:19,621 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:27:19,624 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 06:27:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:19,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-13 06:27:19,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:27:19,790 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:19,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:27:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:20,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948295714] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:27:20,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:27:20,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-09-13 06:27:20,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271160544] [2024-09-13 06:27:20,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:27:20,061 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 06:27:20,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:27:20,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 06:27:20,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2024-09-13 06:27:20,064 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 06:27:20,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:27:20,516 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2024-09-13 06:27:20,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-13 06:27:20,516 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2024-09-13 06:27:20,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:27:20,517 INFO L225 Difference]: With dead ends: 71 [2024-09-13 06:27:20,518 INFO L226 Difference]: Without dead ends: 71 [2024-09-13 06:27:20,518 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2024-09-13 06:27:20,520 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 125 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 06:27:20,521 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 120 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 06:27:20,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-13 06:27:20,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2024-09-13 06:27:20,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 43 states have internal predecessors, (51), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-09-13 06:27:20,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2024-09-13 06:27:20,537 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 20 [2024-09-13 06:27:20,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:27:20,538 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2024-09-13 06:27:20,538 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 06:27:20,538 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2024-09-13 06:27:20,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-13 06:27:20,539 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:27:20,539 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:27:20,556 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 06:27:20,743 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:20,744 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:27:20,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:27:20,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1809419033, now seen corresponding path program 2 times [2024-09-13 06:27:20,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:27:20,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675099720] [2024-09-13 06:27:20,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:20,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:27:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:21,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-13 06:27:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:21,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:27:21,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675099720] [2024-09-13 06:27:21,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675099720] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:27:21,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79647899] [2024-09-13 06:27:21,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 06:27:21,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:21,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:27:21,405 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) [2024-09-13 06:27:21,409 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 06:27:21,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 06:27:21,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:27:21,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-13 06:27:21,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:27:21,594 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:21,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:27:21,683 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:21,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79647899] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:27:21,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:27:21,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 26 [2024-09-13 06:27:21,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379969252] [2024-09-13 06:27:21,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:27:21,685 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-13 06:27:21,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:27:21,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-13 06:27:21,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=648, Unknown=0, NotChecked=0, Total=702 [2024-09-13 06:27:21,686 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 27 states, 25 states have (on average 1.16) internal successors, (29), 17 states have internal predecessors, (29), 11 states have call successors, (11), 11 states have call predecessors, (11), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 06:27:22,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:27:22,523 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2024-09-13 06:27:22,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-13 06:27:22,523 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.16) internal successors, (29), 17 states have internal predecessors, (29), 11 states have call successors, (11), 11 states have call predecessors, (11), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2024-09-13 06:27:22,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:27:22,525 INFO L225 Difference]: With dead ends: 111 [2024-09-13 06:27:22,525 INFO L226 Difference]: Without dead ends: 111 [2024-09-13 06:27:22,526 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2024-09-13 06:27:22,526 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 123 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-13 06:27:22,527 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 259 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-13 06:27:22,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-09-13 06:27:22,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 101. [2024-09-13 06:27:22,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 67 states have (on average 1.2985074626865671) internal successors, (87), 68 states have internal predecessors, (87), 12 states have call successors, (12), 11 states have call predecessors, (12), 20 states have return successors, (24), 21 states have call predecessors, (24), 12 states have call successors, (24) [2024-09-13 06:27:22,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 123 transitions. [2024-09-13 06:27:22,537 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 123 transitions. Word has length 38 [2024-09-13 06:27:22,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:27:22,538 INFO L474 AbstractCegarLoop]: Abstraction has 101 states and 123 transitions. [2024-09-13 06:27:22,538 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.16) internal successors, (29), 17 states have internal predecessors, (29), 11 states have call successors, (11), 11 states have call predecessors, (11), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 06:27:22,538 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 123 transitions. [2024-09-13 06:27:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-13 06:27:22,539 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:27:22,539 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 1, 1, 1, 1] [2024-09-13 06:27:22,552 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 06:27:22,741 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:22,741 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:27:22,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:27:22,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1732117816, now seen corresponding path program 3 times [2024-09-13 06:27:22,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:27:22,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139841847] [2024-09-13 06:27:22,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:22,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:27:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:23,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 06:27:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:23,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:23,318 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 1 proven. 158 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 06:27:23,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:27:23,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139841847] [2024-09-13 06:27:23,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139841847] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:27:23,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140985625] [2024-09-13 06:27:23,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 06:27:23,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:23,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:27:23,323 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) [2024-09-13 06:27:23,325 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 06:27:23,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-13 06:27:23,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:27:23,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-13 06:27:23,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:27:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-13 06:27:23,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:27:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-09-13 06:27:23,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140985625] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:27:23,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:27:23,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 9] total 30 [2024-09-13 06:27:23,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776405915] [2024-09-13 06:27:23,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:27:23,664 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-13 06:27:23,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:27:23,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-13 06:27:23,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=834, Unknown=0, NotChecked=0, Total=930 [2024-09-13 06:27:23,666 INFO L87 Difference]: Start difference. First operand 101 states and 123 transitions. Second operand has 31 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 20 states have internal predecessors, (38), 14 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-13 06:27:24,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:27:24,511 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2024-09-13 06:27:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-13 06:27:24,511 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 20 states have internal predecessors, (38), 14 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 41 [2024-09-13 06:27:24,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:27:24,513 INFO L225 Difference]: With dead ends: 113 [2024-09-13 06:27:24,513 INFO L226 Difference]: Without dead ends: 113 [2024-09-13 06:27:24,513 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2024-09-13 06:27:24,514 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 127 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-13 06:27:24,514 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 204 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-13 06:27:24,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-09-13 06:27:24,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 104. [2024-09-13 06:27:24,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 69 states have (on average 1.289855072463768) internal successors, (89), 70 states have internal predecessors, (89), 12 states have call successors, (12), 11 states have call predecessors, (12), 21 states have return successors, (25), 22 states have call predecessors, (25), 12 states have call successors, (25) [2024-09-13 06:27:24,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 126 transitions. [2024-09-13 06:27:24,532 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 126 transitions. Word has length 41 [2024-09-13 06:27:24,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:27:24,533 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 126 transitions. [2024-09-13 06:27:24,533 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 20 states have internal predecessors, (38), 14 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-13 06:27:24,533 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 126 transitions. [2024-09-13 06:27:24,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-13 06:27:24,534 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:27:24,534 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 1, 1, 1, 1] [2024-09-13 06:27:24,553 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-13 06:27:24,735 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 06:27:24,735 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:27:24,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:27:24,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1784760135, now seen corresponding path program 4 times [2024-09-13 06:27:24,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:27:24,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862330662] [2024-09-13 06:27:24,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:24,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:27:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:25,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 06:27:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:25,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:25,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 2 proven. 160 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 06:27:25,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:27:25,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862330662] [2024-09-13 06:27:25,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862330662] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:27:25,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304118198] [2024-09-13 06:27:25,308 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 06:27:25,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:25,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:27:25,311 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) [2024-09-13 06:27:25,313 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 06:27:25,368 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 06:27:25,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:27:25,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-13 06:27:25,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:27:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 49 proven. 12 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-09-13 06:27:25,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:27:26,048 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 49 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-09-13 06:27:26,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304118198] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:27:26,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:27:26,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 12] total 35 [2024-09-13 06:27:26,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84335944] [2024-09-13 06:27:26,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:27:26,050 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-13 06:27:26,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:27:26,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-13 06:27:26,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1140, Unknown=0, NotChecked=0, Total=1260 [2024-09-13 06:27:26,052 INFO L87 Difference]: Start difference. First operand 104 states and 126 transitions. Second operand has 36 states, 33 states have (on average 1.393939393939394) internal successors, (46), 25 states have internal predecessors, (46), 14 states have call successors, (15), 9 states have call predecessors, (15), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-13 06:27:26,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:27:26,886 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2024-09-13 06:27:26,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-13 06:27:26,887 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 1.393939393939394) internal successors, (46), 25 states have internal predecessors, (46), 14 states have call successors, (15), 9 states have call predecessors, (15), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 44 [2024-09-13 06:27:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:27:26,888 INFO L225 Difference]: With dead ends: 115 [2024-09-13 06:27:26,888 INFO L226 Difference]: Without dead ends: 115 [2024-09-13 06:27:26,889 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=250, Invalid=2200, Unknown=0, NotChecked=0, Total=2450 [2024-09-13 06:27:26,890 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 120 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-13 06:27:26,890 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 190 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-13 06:27:26,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-13 06:27:26,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 107. [2024-09-13 06:27:26,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 71 states have (on average 1.267605633802817) internal successors, (90), 72 states have internal predecessors, (90), 12 states have call successors, (12), 11 states have call predecessors, (12), 22 states have return successors, (26), 23 states have call predecessors, (26), 12 states have call successors, (26) [2024-09-13 06:27:26,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2024-09-13 06:27:26,899 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 44 [2024-09-13 06:27:26,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:27:26,899 INFO L474 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2024-09-13 06:27:26,900 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 1.393939393939394) internal successors, (46), 25 states have internal predecessors, (46), 14 states have call successors, (15), 9 states have call predecessors, (15), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-13 06:27:26,900 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2024-09-13 06:27:26,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-13 06:27:26,901 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:27:26,901 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 1, 1, 1, 1] [2024-09-13 06:27:26,933 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 06:27:27,105 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:27,106 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:27:27,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:27:27,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1905944872, now seen corresponding path program 5 times [2024-09-13 06:27:27,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:27:27,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537939908] [2024-09-13 06:27:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:27,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:27:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:27,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-13 06:27:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:27,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:27,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:27,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 3 proven. 162 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 06:27:27,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:27:27,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537939908] [2024-09-13 06:27:27,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537939908] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:27:27,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685950564] [2024-09-13 06:27:27,681 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 06:27:27,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:27,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:27:27,683 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) [2024-09-13 06:27:27,684 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 06:27:27,744 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-09-13 06:27:27,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:27:27,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-13 06:27:27,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:27:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 54 proven. 22 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-09-13 06:27:27,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:27:28,380 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 54 proven. 38 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-09-13 06:27:28,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685950564] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:27:28,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:27:28,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 11, 15] total 36 [2024-09-13 06:27:28,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342464766] [2024-09-13 06:27:28,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:27:28,382 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-13 06:27:28,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:27:28,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-13 06:27:28,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2024-09-13 06:27:28,384 INFO L87 Difference]: Start difference. First operand 107 states and 128 transitions. Second operand has 37 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 24 states have internal predecessors, (46), 14 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-13 06:27:29,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:27:29,189 INFO L93 Difference]: Finished difference Result 117 states and 130 transitions. [2024-09-13 06:27:29,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-13 06:27:29,189 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 24 states have internal predecessors, (46), 14 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 47 [2024-09-13 06:27:29,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:27:29,190 INFO L225 Difference]: With dead ends: 117 [2024-09-13 06:27:29,190 INFO L226 Difference]: Without dead ends: 117 [2024-09-13 06:27:29,192 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=275, Invalid=2377, Unknown=0, NotChecked=0, Total=2652 [2024-09-13 06:27:29,192 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 171 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-13 06:27:29,193 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 153 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-13 06:27:29,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-09-13 06:27:29,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 110. [2024-09-13 06:27:29,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 73 states have (on average 1.2465753424657535) internal successors, (91), 74 states have internal predecessors, (91), 12 states have call successors, (12), 11 states have call predecessors, (12), 23 states have return successors, (27), 24 states have call predecessors, (27), 12 states have call successors, (27) [2024-09-13 06:27:29,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 130 transitions. [2024-09-13 06:27:29,201 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 130 transitions. Word has length 47 [2024-09-13 06:27:29,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:27:29,201 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 130 transitions. [2024-09-13 06:27:29,201 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 24 states have internal predecessors, (46), 14 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-13 06:27:29,201 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 130 transitions. [2024-09-13 06:27:29,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-13 06:27:29,203 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:27:29,203 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 5, 5, 5, 1, 1, 1, 1] [2024-09-13 06:27:29,222 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-13 06:27:29,407 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:29,408 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:27:29,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:27:29,409 INFO L85 PathProgramCache]: Analyzing trace with hash -536030809, now seen corresponding path program 6 times [2024-09-13 06:27:29,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:27:29,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785076099] [2024-09-13 06:27:29,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:29,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:27:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:29,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-13 06:27:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:29,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:29,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:29,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:30,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 164 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-13 06:27:30,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:27:30,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785076099] [2024-09-13 06:27:30,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785076099] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:27:30,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349032419] [2024-09-13 06:27:30,070 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 06:27:30,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:30,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:27:30,072 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) [2024-09-13 06:27:30,074 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 06:27:30,127 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-09-13 06:27:30,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:27:30,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-13 06:27:30,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:27:30,618 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-09-13 06:27:30,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:27:30,975 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 11 [2024-09-13 06:33:22,517 WARN L293 SmtUtils]: Spent 5.85m on a formula simplification. DAG size of input: 2090 DAG size of output: 51 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-09-13 06:33:24,331 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-09-13 06:33:24,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349032419] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:33:24,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:33:24,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 5, 5] total 32 [2024-09-13 06:33:24,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907314845] [2024-09-13 06:33:24,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:33:24,333 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-13 06:33:24,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:33:24,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-13 06:33:24,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=974, Unknown=0, NotChecked=0, Total=1056 [2024-09-13 06:33:24,334 INFO L87 Difference]: Start difference. First operand 110 states and 130 transitions. Second operand has 33 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 21 states have internal predecessors, (41), 10 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-13 06:33:25,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:33:25,417 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2024-09-13 06:33:25,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-13 06:33:25,418 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 21 states have internal predecessors, (41), 10 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 4 states have call successors, (8) Word has length 50 [2024-09-13 06:33:25,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:33:25,419 INFO L225 Difference]: With dead ends: 110 [2024-09-13 06:33:25,419 INFO L226 Difference]: Without dead ends: 110 [2024-09-13 06:33:25,420 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=337, Invalid=3323, Unknown=0, NotChecked=0, Total=3660 [2024-09-13 06:33:25,421 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 79 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-13 06:33:25,421 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 96 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-13 06:33:25,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-09-13 06:33:25,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 104. [2024-09-13 06:33:25,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 70 states have internal predecessors, (70), 12 states have call successors, (12), 11 states have call predecessors, (12), 22 states have return successors, (26), 22 states have call predecessors, (26), 12 states have call successors, (26) [2024-09-13 06:33:25,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2024-09-13 06:33:25,428 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 50 [2024-09-13 06:33:25,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:33:25,429 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2024-09-13 06:33:25,429 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 21 states have internal predecessors, (41), 10 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-13 06:33:25,429 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2024-09-13 06:33:25,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-13 06:33:25,431 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:33:25,431 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:33:25,445 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-13 06:33:25,635 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:33:25,636 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:33:25,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:33:25,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1394136637, now seen corresponding path program 1 times [2024-09-13 06:33:25,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:33:25,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956097878] [2024-09-13 06:33:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:33:25,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:33:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:25,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:33:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:26,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:26,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:26,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:26,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:26,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:26,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:26,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:26,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:26,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:26,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 10 proven. 155 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-09-13 06:33:27,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:33:27,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956097878] [2024-09-13 06:33:27,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956097878] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:33:27,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763024991] [2024-09-13 06:33:27,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:33:27,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:33:27,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:33:27,016 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) [2024-09-13 06:33:27,018 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 06:33:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:27,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-13 06:33:27,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:33:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-09-13 06:33:27,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 06:33:27,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763024991] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:33:27,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 06:33:27,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [26] total 28 [2024-09-13 06:33:27,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958679020] [2024-09-13 06:33:27,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:33:27,271 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 06:33:27,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:33:27,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 06:33:27,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=702, Unknown=0, NotChecked=0, Total=756 [2024-09-13 06:33:27,273 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:33:27,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:33:27,322 INFO L93 Difference]: Finished difference Result 102 states and 106 transitions. [2024-09-13 06:33:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 06:33:27,325 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 69 [2024-09-13 06:33:27,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:33:27,326 INFO L225 Difference]: With dead ends: 102 [2024-09-13 06:33:27,326 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 06:33:27,326 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=808, Unknown=0, NotChecked=0, Total=870 [2024-09-13 06:33:27,327 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:33:27,327 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 29 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:33:27,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 06:33:27,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 06:33:27,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:33:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 06:33:27,327 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2024-09-13 06:33:27,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:33:27,328 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 06:33:27,328 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:33:27,328 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 06:33:27,328 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 06:33:27,331 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-09-13 06:33:27,331 INFO L785 garLoopResultBuilder]: Registering result SAFE for location idErr0ENSURES_VIOLATIONPOST_CONDITION (0 of 2 remaining) [2024-09-13 06:33:27,348 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-13 06:33:27,531 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-13 06:33:27,534 INFO L408 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1] [2024-09-13 06:33:27,536 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 06:33:27,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 06:33:27 BoogieIcfgContainer [2024-09-13 06:33:27,539 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 06:33:27,539 INFO L158 Benchmark]: Toolchain (without parser) took 370894.29ms. Allocated memory was 172.0MB in the beginning and 564.1MB in the end (delta: 392.2MB). Free memory was 114.1MB in the beginning and 484.1MB in the end (delta: -370.0MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. [2024-09-13 06:33:27,540 INFO L158 Benchmark]: Witness Parser took 0.29ms. Allocated memory is still 172.0MB. Free memory is still 134.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:33:27,540 INFO L158 Benchmark]: CDTParser took 0.94ms. Allocated memory is still 172.0MB. Free memory is still 132.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:33:27,540 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.30ms. Allocated memory is still 172.0MB. Free memory was 113.6MB in the beginning and 101.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 06:33:27,540 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.44ms. Allocated memory is still 172.0MB. Free memory was 101.0MB in the beginning and 99.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 06:33:27,541 INFO L158 Benchmark]: Boogie Preprocessor took 38.72ms. Allocated memory is still 172.0MB. Free memory was 99.5MB in the beginning and 97.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 06:33:27,541 INFO L158 Benchmark]: RCFGBuilder took 322.29ms. Allocated memory is still 172.0MB. Free memory was 97.9MB in the beginning and 85.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 06:33:27,542 INFO L158 Benchmark]: TraceAbstraction took 370241.48ms. Allocated memory was 172.0MB in the beginning and 564.1MB in the end (delta: 392.2MB). Free memory was 84.8MB in the beginning and 484.1MB in the end (delta: -399.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:33:27,543 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.29ms. Allocated memory is still 172.0MB. Free memory is still 134.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.94ms. Allocated memory is still 172.0MB. Free memory is still 132.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.30ms. Allocated memory is still 172.0MB. Free memory was 113.6MB in the beginning and 101.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.44ms. Allocated memory is still 172.0MB. Free memory was 101.0MB in the beginning and 99.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.72ms. Allocated memory is still 172.0MB. Free memory was 99.5MB in the beginning and 97.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 322.29ms. Allocated memory is still 172.0MB. Free memory was 97.9MB in the beginning and 85.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 370241.48ms. Allocated memory was 172.0MB in the beginning and 564.1MB in the end (delta: 392.2MB). Free memory was 84.8MB in the beginning and 484.1MB in the end (delta: -399.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 6]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 370.2s, OverallIterations: 10, TraceHistogramMax: 11, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 868 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 803 mSDsluCounter, 1167 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1025 mSDsCounter, 329 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7435 IncrementalHoareTripleChecker+Invalid, 7764 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 329 mSolverCounterUnsat, 142 mSDtfsCounter, 7435 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 925 GetRequests, 597 SyntacticMatches, 1 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1524 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=8, InterpolantAutomatonStates: 197, 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, 10 MinimizatonAttempts, 54 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 361.9s InterpolantComputationTime, 673 NumberOfCodeBlocks, 625 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 895 ConstructedInterpolants, 0 QuantifiedInterpolants, 3345 SizeOfPredicates, 28 NumberOfNonLiveVariables, 955 ConjunctsInSsa, 228 ConjunctsInUnsatCore, 26 InterpolantComputations, 3 PerfectInterpolantSequences, 1807/3309 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 06:33:27,575 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