./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/underapprox_1-2.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/underapprox_1-2.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/loop-acceleration/underapprox_1-2.c ../results/automizer-verification-files/SV-COMP24_unreach-call/underapprox_1-2.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-17 19:43:02,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 19:43:02,665 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 19:43:02,670 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 19:43:02,671 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 19:43:02,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 19:43:02,688 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 19:43:02,688 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 19:43:02,689 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 19:43:02,689 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 19:43:02,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 19:43:02,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 19:43:02,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 19:43:02,692 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 19:43:02,692 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 19:43:02,693 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 19:43:02,693 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 19:43:02,695 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 19:43:02,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 19:43:02,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 19:43:02,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 19:43:02,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 19:43:02,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 19:43:02,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 19:43:02,698 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 19:43:02,698 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 19:43:02,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 19:43:02,698 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 19:43:02,698 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 19:43:02,698 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 19:43:02,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 19:43:02,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 19:43:02,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:43:02,699 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 19:43:02,699 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 19:43:02,699 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 19:43:02,700 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 19:43:02,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 19:43:02,700 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 19:43:02,700 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 19:43:02,700 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 19:43:02,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 19:43:02,701 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-17 19:43:02,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 19:43:02,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 19:43:02,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 19:43:02,909 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-17 19:43:02,909 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-17 19:43:02,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/underapprox_1-2.yml/witness-2.1.yml [2024-09-17 19:43:02,967 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 19:43:02,968 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 19:43:02,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-acceleration/underapprox_1-2.c [2024-09-17 19:43:04,262 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 19:43:04,407 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 19:43:04,407 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-acceleration/underapprox_1-2.c [2024-09-17 19:43:04,412 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/dda6b0dfd/6ba99f52648c46e6806c1713df35d856/FLAGc283bea2d [2024-09-17 19:43:04,820 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/dda6b0dfd/6ba99f52648c46e6806c1713df35d856 [2024-09-17 19:43:04,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 19:43:04,821 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-17 19:43:04,823 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 19:43:04,824 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 19:43:04,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 19:43:04,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:43:02" (1/2) ... [2024-09-17 19:43:04,830 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@455f677 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:43:04, skipping insertion in model container [2024-09-17 19:43:04,831 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:43:02" (1/2) ... [2024-09-17 19:43:04,832 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c6ec659 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:43:04, skipping insertion in model container [2024-09-17 19:43:04,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:43:04" (2/2) ... [2024-09-17 19:43:04,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@455f677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:43:04, skipping insertion in model container [2024-09-17 19:43:04,833 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:43:04" (2/2) ... [2024-09-17 19:43:04,837 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-17 19:43:04,838 INFO L1541 ArrayList]: Loop invariant at [L16-L19] (((((((((((y * 2) + 1) <= (((89478484 + (y * 178956971)) / 268435456) * 3)) && (y <= 4)) && (x == 2)) || ((((y + 1) <= (3 * (((715827883 * y) + 715827872) / 2147483648))) && (y <= 32)) && (5 == x))) || (((((y / 2) <= 32) && ((y % 2) == 0)) && (x == 6)) && (((y / 2) + 1) <= (3 * ((715827872 + (715827883 * (y / 2))) / 2147483648))))) || (((x == 3) && ((y + 1) <= (3 * (((y * 178956971) + 178956968) / 536870912)))) && (y <= 8))) || ((x == 0) && (y == 1))) || (((y <= 2) && ((y + 1) <= ((((44739243 * y) + 44739242) / 134217728) * 3))) && (x == 1))) || (((y <= 16) && (((y * 2) + 1) <= ((((715827883 * y) + 357913936) / 1073741824) * 3))) && (x == 4))) [2024-09-17 19:43:04,838 INFO L1541 ArrayList]: Function contract at [L5]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-17 19:43:04,854 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 19:43:04,966 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-acceleration/underapprox_1-2.c[327,340] [2024-09-17 19:43:04,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:43:04,983 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-17 19:43:05,008 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-acceleration/underapprox_1-2.c[327,340] Start Parsing Local [2024-09-17 19:43:05,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:43:05,030 INFO L204 MainTranslator]: Completed translation [2024-09-17 19:43:05,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:43:05 WrapperNode [2024-09-17 19:43:05,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 19:43:05,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 19:43:05,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 19:43:05,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 19:43:05,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:43:05" (1/1) ... [2024-09-17 19:43:05,046 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:43:05" (1/1) ... [2024-09-17 19:43:05,078 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26 [2024-09-17 19:43:05,078 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 19:43:05,079 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 19:43:05,079 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 19:43:05,079 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 19:43:05,091 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:43:05" (1/1) ... [2024-09-17 19:43:05,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:43:05" (1/1) ... [2024-09-17 19:43:05,098 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:43:05" (1/1) ... [2024-09-17 19:43:05,112 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-17 19:43:05,114 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:43:05" (1/1) ... [2024-09-17 19:43:05,114 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:43:05" (1/1) ... [2024-09-17 19:43:05,117 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:43:05" (1/1) ... [2024-09-17 19:43:05,123 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:43:05" (1/1) ... [2024-09-17 19:43:05,124 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:43:05" (1/1) ... [2024-09-17 19:43:05,124 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:43:05" (1/1) ... [2024-09-17 19:43:05,126 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 19:43:05,126 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 19:43:05,126 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 19:43:05,126 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 19:43:05,127 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:43:05" (1/1) ... [2024-09-17 19:43:05,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:43:05,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:43:05,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-17 19:43:05,156 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-17 19:43:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 19:43:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 19:43:05,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 19:43:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 19:43:05,261 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 19:43:05,263 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 19:43:05,455 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-17 19:43:05,456 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 19:43:05,474 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 19:43:05,474 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-17 19:43:05,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:43:05 BoogieIcfgContainer [2024-09-17 19:43:05,474 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 19:43:05,476 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 19:43:05,476 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 19:43:05,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 19:43:05,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:43:02" (1/4) ... [2024-09-17 19:43:05,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332b84da and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 17.09 07:43:05, skipping insertion in model container [2024-09-17 19:43:05,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 07:43:04" (2/4) ... [2024-09-17 19:43:05,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332b84da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:43:05, skipping insertion in model container [2024-09-17 19:43:05,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:43:05" (3/4) ... [2024-09-17 19:43:05,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332b84da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:43:05, skipping insertion in model container [2024-09-17 19:43:05,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:43:05" (4/4) ... [2024-09-17 19:43:05,481 INFO L112 eAbstractionObserver]: Analyzing ICFG underapprox_1-2.c [2024-09-17 19:43:05,496 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 19:43:05,496 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-09-17 19:43:05,524 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 19:43:05,529 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;@be156c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 19:43:05,529 INFO L337 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-09-17 19:43:05,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.875) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:43:05,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-09-17 19:43:05,535 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:43:05,536 INFO L216 NwaCegarLoop]: trace histogram [1, 1] [2024-09-17 19:43:05,536 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-17 19:43:05,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:43:05,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2050, now seen corresponding path program 1 times [2024-09-17 19:43:05,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:43:05,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136979851] [2024-09-17 19:43:05,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:43:05,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:43:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:43:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:43:05,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:43:05,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136979851] [2024-09-17 19:43:05,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136979851] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:43:05,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:43:05,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-17 19:43:05,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173018007] [2024-09-17 19:43:05,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:43:05,937 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-17 19:43:05,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:43:05,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-17 19:43:05,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 19:43:05,961 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.875) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:43:06,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:43:06,079 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2024-09-17 19:43:06,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-17 19:43:06,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-09-17 19:43:06,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:43:06,087 INFO L225 Difference]: With dead ends: 15 [2024-09-17 19:43:06,087 INFO L226 Difference]: Without dead ends: 14 [2024-09-17 19:43:06,089 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 19:43:06,092 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:43:06,094 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 15 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:43:06,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-09-17 19:43:06,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-09-17 19:43:06,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:43:06,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2024-09-17 19:43:06,117 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 2 [2024-09-17 19:43:06,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:43:06,117 INFO L474 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2024-09-17 19:43:06,117 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:43:06,117 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2024-09-17 19:43:06,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-09-17 19:43:06,118 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:43:06,118 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-09-17 19:43:06,118 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 19:43:06,118 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-17 19:43:06,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:43:06,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1971418, now seen corresponding path program 1 times [2024-09-17 19:43:06,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:43:06,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126577704] [2024-09-17 19:43:06,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:43:06,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:43:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:43:06,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:43:06,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:43:06,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126577704] [2024-09-17 19:43:06,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126577704] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:43:06,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251226081] [2024-09-17 19:43:06,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:43:06,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:43:06,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:43:06,952 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:43:06,953 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 19:43:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:43:07,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-17 19:43:07,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:43:07,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:43:07,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:43:08,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:43:08,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251226081] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:43:08,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:43:08,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 3] total 6 [2024-09-17 19:43:08,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304066708] [2024-09-17 19:43:08,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:43:08,140 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-17 19:43:08,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:43:08,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-17 19:43:08,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-17 19:43:08,142 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:43:08,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:43:08,188 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2024-09-17 19:43:08,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-17 19:43:08,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-09-17 19:43:08,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:43:08,189 INFO L225 Difference]: With dead ends: 16 [2024-09-17 19:43:08,189 INFO L226 Difference]: Without dead ends: 16 [2024-09-17 19:43:08,190 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-17 19:43:08,192 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:43:08,192 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:43:08,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-17 19:43:08,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-17 19:43:08,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:43:08,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2024-09-17 19:43:08,197 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 4 [2024-09-17 19:43:08,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:43:08,197 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2024-09-17 19:43:08,197 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:43:08,198 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2024-09-17 19:43:08,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-09-17 19:43:08,198 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:43:08,198 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1] [2024-09-17 19:43:08,211 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-17 19:43:08,402 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 [2024-09-17 19:43:08,403 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-17 19:43:08,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:43:08,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1894534066, now seen corresponding path program 2 times [2024-09-17 19:43:08,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:43:08,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232474577] [2024-09-17 19:43:08,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:43:08,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:43:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:43:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:43:08,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:43:08,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232474577] [2024-09-17 19:43:08,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232474577] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:43:08,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776312944] [2024-09-17 19:43:08,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 19:43:08,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:43:08,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:43:08,862 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:43:08,863 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 19:43:08,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 19:43:08,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:43:08,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-17 19:43:08,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:43:08,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:43:08,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:43:28,202 WARN L293 SmtUtils]: Spent 5.16s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:43:35,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:43:35,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776312944] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:43:35,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:43:35,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 5] total 9 [2024-09-17 19:43:35,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878725173] [2024-09-17 19:43:35,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:43:35,025 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-17 19:43:35,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:43:35,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-17 19:43:35,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-09-17 19:43:35,026 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:43:36,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:43:36,481 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2024-09-17 19:43:36,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-17 19:43:36,481 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-09-17 19:43:36,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:43:36,482 INFO L225 Difference]: With dead ends: 22 [2024-09-17 19:43:36,482 INFO L226 Difference]: Without dead ends: 22 [2024-09-17 19:43:36,482 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-09-17 19:43:36,483 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-09-17 19:43:36,483 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 25 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-09-17 19:43:36,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-17 19:43:36,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-09-17 19:43:36,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.375) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:43:36,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-09-17 19:43:36,485 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 6 [2024-09-17 19:43:36,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:43:36,486 INFO L474 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-09-17 19:43:36,486 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:43:36,486 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-09-17 19:43:36,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-17 19:43:36,486 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:43:36,486 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 1, 1] [2024-09-17 19:43:36,499 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-17 19:43:36,690 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 [2024-09-17 19:43:36,691 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-17 19:43:36,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:43:36,691 INFO L85 PathProgramCache]: Analyzing trace with hash -418894710, now seen corresponding path program 3 times [2024-09-17 19:43:36,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:43:36,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312413358] [2024-09-17 19:43:36,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:43:36,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:43:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:43:37,263 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:43:37,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:43:37,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312413358] [2024-09-17 19:43:37,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312413358] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:43:37,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478615472] [2024-09-17 19:43:37,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 19:43:37,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:43:37,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:43:37,266 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:43:37,267 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 19:43:43,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-17 19:43:43,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:43:43,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-17 19:43:43,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:43:43,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:43:43,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:43:57,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:43:57,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478615472] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:43:57,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:43:57,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 7] total 11 [2024-09-17 19:43:57,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438825897] [2024-09-17 19:43:57,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:43:57,336 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-17 19:43:57,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:43:57,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-17 19:43:57,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-09-17 19:43:57,336 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:44:00,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 19:44:00,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:44:00,512 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2024-09-17 19:44:00,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-17 19:44:00,515 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-09-17 19:44:00,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:44:00,516 INFO L225 Difference]: With dead ends: 11 [2024-09-17 19:44:00,516 INFO L226 Difference]: Without dead ends: 11 [2024-09-17 19:44:00,516 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-09-17 19:44:00,518 INFO L434 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:44:00,518 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-09-17 19:44:00,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-09-17 19:44:00,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-09-17 19:44:00,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:44:00,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2024-09-17 19:44:00,521 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2024-09-17 19:44:00,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:44:00,521 INFO L474 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2024-09-17 19:44:00,521 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:44:00,521 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2024-09-17 19:44:00,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-17 19:44:00,522 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:44:00,522 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 1, 1] [2024-09-17 19:44:00,535 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-17 19:44:00,722 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 [2024-09-17 19:44:00,723 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-17 19:44:00,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:44:00,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1169110882, now seen corresponding path program 4 times [2024-09-17 19:44:00,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:44:00,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830220873] [2024-09-17 19:44:00,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:44:00,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:44:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-17 19:44:00,942 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-09-17 19:44:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-17 19:44:01,188 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-09-17 19:44:01,188 INFO L326 BasicCegarLoop]: Counterexample is feasible [2024-09-17 19:44:01,189 INFO L785 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-09-17 19:44:01,190 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION (2 of 4 remaining) [2024-09-17 19:44:01,191 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-09-17 19:44:01,191 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONPOST_CONDITION (0 of 4 remaining) [2024-09-17 19:44:01,191 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-17 19:44:01,194 INFO L408 BasicCegarLoop]: Path program histogram: [4, 1] [2024-09-17 19:44:01,205 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-09-17 19:44:01,207 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-09-17 19:44:01,207 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-09-17 19:44:01,209 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-09-17 19:44:01,209 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-09-17 19:44:01,209 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-09-17 19:44:01,213 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-17 19:44:01,214 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-17 19:44:01,215 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-17 19:44:01,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 07:44:01 BoogieIcfgContainer [2024-09-17 19:44:01,215 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-17 19:44:01,217 INFO L158 Benchmark]: Toolchain (without parser) took 56394.28ms. Allocated memory was 176.2MB in the beginning and 262.1MB in the end (delta: 86.0MB). Free memory was 101.7MB in the beginning and 219.6MB in the end (delta: -117.9MB). Peak memory consumption was 117.7MB. Max. memory is 16.1GB. [2024-09-17 19:44:01,217 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 176.2MB. Free memory is still 134.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:44:01,217 INFO L158 Benchmark]: CDTParser took 0.06ms. Allocated memory is still 176.2MB. Free memory is still 148.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:44:01,217 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.74ms. Allocated memory is still 176.2MB. Free memory was 101.4MB in the beginning and 88.2MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-17 19:44:01,218 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.50ms. Allocated memory is still 176.2MB. Free memory was 88.2MB in the beginning and 86.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:44:01,219 INFO L158 Benchmark]: Boogie Preprocessor took 46.80ms. Allocated memory is still 176.2MB. Free memory was 86.3MB in the beginning and 84.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:44:01,219 INFO L158 Benchmark]: RCFGBuilder took 348.22ms. Allocated memory is still 176.2MB. Free memory was 84.7MB in the beginning and 132.6MB in the end (delta: -48.0MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2024-09-17 19:44:01,219 INFO L158 Benchmark]: TraceAbstraction took 55739.53ms. Allocated memory was 176.2MB in the beginning and 262.1MB in the end (delta: 86.0MB). Free memory was 131.8MB in the beginning and 219.6MB in the end (delta: -87.8MB). Peak memory consumption was 147.0MB. Max. memory is 16.1GB. [2024-09-17 19:44:01,220 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 0.15ms. Allocated memory is still 176.2MB. Free memory is still 134.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.06ms. Allocated memory is still 176.2MB. Free memory is still 148.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.74ms. Allocated memory is still 176.2MB. Free memory was 101.4MB in the beginning and 88.2MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.50ms. Allocated memory is still 176.2MB. Free memory was 88.2MB in the beginning and 86.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.80ms. Allocated memory is still 176.2MB. Free memory was 86.3MB in the beginning and 84.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 348.22ms. Allocated memory is still 176.2MB. Free memory was 84.7MB in the beginning and 132.6MB in the end (delta: -48.0MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * TraceAbstraction took 55739.53ms. Allocated memory was 176.2MB in the beginning and 262.1MB in the end (delta: 86.0MB). Free memory was 131.8MB in the beginning and 219.6MB in the end (delta: -87.8MB). Peak memory consumption was 147.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. * 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 - CounterExampleResult [Line: 16]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L13] unsigned int x = 0; [L14] unsigned int y = 1; VAL [x=0, y=1] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=1, y=2] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=2, y=4] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=3, y=8] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=4, y=16] - UnprovableResult [Line: 5]: Unable to prove that procedure precondition always holds Unable to prove that procedure precondition always holds Reason: Not analyzed. - UnprovableResult [Line: 7]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 5]: Unable to prove that procedure postcondition always holds Unable to prove that procedure postcondition always holds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 55.7s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 67 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 118 IncrementalHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 25 mSDtfsCounter, 118 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 6.4s SatisfiabilityAnalysisTime, 43.3s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 1098 SizeOfPredicates, 0 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 4/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-09-17 19:44:01,246 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE