./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/sum_by_3_abstracted.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/sum_by_3_abstracted.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/loops-crafted-1/sum_by_3_abstracted.c ../results/automizer-verification-files/SV-COMP24_unreach-call/sum_by_3_abstracted.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 19:44:47,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 19:44:47,877 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 19:44:47,882 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 19:44:47,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 19:44:47,914 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 19:44:47,915 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 19:44:47,915 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 19:44:47,916 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 19:44:47,916 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 19:44:47,916 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 19:44:47,916 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 19:44:47,917 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 19:44:47,919 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 19:44:47,919 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 19:44:47,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 19:44:47,920 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 19:44:47,920 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 19:44:47,920 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 19:44:47,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 19:44:47,921 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 19:44:47,922 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 19:44:47,922 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 19:44:47,922 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 19:44:47,923 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 19:44:47,923 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 19:44:47,923 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 19:44:47,923 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 19:44:47,924 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 19:44:47,924 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 19:44:47,924 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 19:44:47,925 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 19:44:47,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:44:47,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 19:44:47,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 19:44:47,926 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 19:44:47,927 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 19:44:47,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 19:44:47,927 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 19:44:47,927 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 19:44:47,928 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 19:44:47,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 19:44:47,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-17 19:44:48,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 19:44:48,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 19:44:48,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 19:44:48,254 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 19:44:48,254 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 19:44:48,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops-crafted-1/sum_by_3_abstracted.c [2024-09-17 19:44:49,686 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 19:44:49,864 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 19:44:49,865 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/sum_by_3_abstracted.c [2024-09-17 19:44:49,872 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/0e4ae5053/1c949419009847f9a503e6f3267ed9a4/FLAG0898545b2 [2024-09-17 19:44:50,246 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/0e4ae5053/1c949419009847f9a503e6f3267ed9a4 [2024-09-17 19:44:50,250 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-17 19:44:50,252 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-17 19:44:50,252 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/sum_by_3_abstracted.yml/witness-2.1.yml [2024-09-17 19:44:50,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 19:44:50,309 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-17 19:44:50,311 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 19:44:50,311 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 19:44:50,316 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 19:44:50,318 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:44:50" (1/2) ... [2024-09-17 19:44:50,319 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78e963fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:44:50, skipping insertion in model container [2024-09-17 19:44:50,319 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:44:50" (1/2) ... [2024-09-17 19:44:50,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@14d97fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:44:50, skipping insertion in model container [2024-09-17 19:44:50,321 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 07:44:50" (2/2) ... [2024-09-17 19:44:50,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78e963fc and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:44:50, skipping insertion in model container [2024-09-17 19:44:50,322 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 07:44:50" (2/2) ... [2024-09-17 19:44:50,333 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-17 19:44:50,336 INFO L1541 ArrayList]: Loop invariant at [L46-L48] ((((((k == 0) && (n <= 0)) && (j == 0)) && (i == 0)) || (((((((((unsigned long long) i * 4294967293) + 60000003) % 4294967296) <= 60000000) && (k == j)) && (i == j)) && (i <= 20000001)) && (n <= ((unsigned) j % 4294967296)))) && (SIZE == 20000001)) [2024-09-17 19:44:50,336 INFO L1541 ArrayList]: Loop invariant at [L42-L44] (((((n <= 0) && (j == 0)) && (i == 0)) || ((((((((unsigned long long) i * 4294967293) + 60000003) % 4294967296) <= 60000000) && (n <= i)) && (i == j)) && (i <= 20000001))) && (SIZE == 20000001)) [2024-09-17 19:44:50,337 INFO L1541 ArrayList]: Function contract at [L26]: requires (SIZE == 20000001), ensures (SIZE == 20000001) [2024-09-17 19:44:50,337 INFO L1541 ArrayList]: Function contract at [L18]: requires ((\old(cond) != 0) && (SIZE == 20000001)), ensures ((\old(cond) != 0) && (SIZE == 20000001)) [2024-09-17 19:44:50,354 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 19:44:50,496 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/loops-crafted-1/sum_by_3_abstracted.c[824,837] [2024-09-17 19:44:50,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:44:50,524 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-17 19:44:50,562 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/loops-crafted-1/sum_by_3_abstracted.c[824,837] Start Parsing Global Start Parsing Global Start Parsing Local Start Parsing Local [2024-09-17 19:44:50,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:44:50,605 INFO L204 MainTranslator]: Completed translation [2024-09-17 19:44:50,606 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:44:50 WrapperNode [2024-09-17 19:44:50,606 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 19:44:50,607 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 19:44:50,607 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 19:44:50,607 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 19:44:50,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:44:50" (1/1) ... [2024-09-17 19:44:50,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:44:50" (1/1) ... [2024-09-17 19:44:50,647 INFO L138 Inliner]: procedures = 21, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2024-09-17 19:44:50,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 19:44:50,651 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 19:44:50,652 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 19:44:50,652 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 19:44:50,662 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:44:50" (1/1) ... [2024-09-17 19:44:50,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:44:50" (1/1) ... [2024-09-17 19:44:50,664 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:44:50" (1/1) ... [2024-09-17 19:44:50,682 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 19:44:50,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:44:50" (1/1) ... [2024-09-17 19:44:50,683 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:44:50" (1/1) ... [2024-09-17 19:44:50,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:44:50" (1/1) ... [2024-09-17 19:44:50,694 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:44:50" (1/1) ... [2024-09-17 19:44:50,695 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:44:50" (1/1) ... [2024-09-17 19:44:50,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:44:50" (1/1) ... [2024-09-17 19:44:50,700 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 19:44:50,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 19:44:50,704 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 19:44:50,704 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 19:44:50,705 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:44:50" (1/1) ... [2024-09-17 19:44:50,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:44:50,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:44:50,743 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 19:44:50,746 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 19:44:50,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 19:44:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 19:44:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 19:44:50,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 19:44:50,858 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 19:44:50,863 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 19:44:51,066 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-09-17 19:44:51,067 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 19:44:51,088 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 19:44:51,088 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-17 19:44:51,089 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:44:51 BoogieIcfgContainer [2024-09-17 19:44:51,089 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 19:44:51,091 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 19:44:51,091 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 19:44:51,098 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 19:44:51,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 07:44:50" (1/4) ... [2024-09-17 19:44:51,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472f84b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:44:51, skipping insertion in model container [2024-09-17 19:44:51,099 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 07:44:50" (2/4) ... [2024-09-17 19:44:51,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472f84b9 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 17.09 07:44:51, skipping insertion in model container [2024-09-17 19:44:51,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:44:50" (3/4) ... [2024-09-17 19:44:51,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472f84b9 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 17.09 07:44:51, skipping insertion in model container [2024-09-17 19:44:51,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:44:51" (4/4) ... [2024-09-17 19:44:51,101 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_by_3_abstracted.c [2024-09-17 19:44:51,116 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 19:44:51,116 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-09-17 19:44:51,154 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 19:44:51,162 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;@778c4e38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 19:44:51,162 INFO L337 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-09-17 19:44:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 19 states have (on average 1.894736842105263) internal successors, (36), 26 states have internal predecessors, (36), 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 19:44:51,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-09-17 19:44:51,174 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:44:51,174 INFO L216 NwaCegarLoop]: trace histogram [1, 1] [2024-09-17 19:44:51,175 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-09-17 19:44:51,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:44:51,180 INFO L85 PathProgramCache]: Analyzing trace with hash 3537, now seen corresponding path program 1 times [2024-09-17 19:44:51,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:44:51,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850279344] [2024-09-17 19:44:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:44:51,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:44:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:44:51,340 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 19:44:51,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:44:51,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850279344] [2024-09-17 19:44:51,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850279344] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:44:51,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:44:51,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-17 19:44:51,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55120714] [2024-09-17 19:44:51,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:44:51,350 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-17 19:44:51,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:44:51,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-17 19:44:51,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 19:44:51,381 INFO L87 Difference]: Start difference. First operand has 27 states, 19 states have (on average 1.894736842105263) internal successors, (36), 26 states have internal predecessors, (36), 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 19:44:51,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:44:51,441 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-09-17 19:44:51,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-17 19:44:51,445 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 19:44:51,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:44:51,453 INFO L225 Difference]: With dead ends: 25 [2024-09-17 19:44:51,454 INFO L226 Difference]: Without dead ends: 23 [2024-09-17 19:44:51,455 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 19:44:51,460 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:44:51,461 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 15 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:44:51,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-17 19:44:51,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-17 19:44:51,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 22 states have internal predecessors, (26), 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 19:44:51,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-17 19:44:51,491 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 2 [2024-09-17 19:44:51,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:44:51,492 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-17 19:44:51,492 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 19:44:51,492 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-17 19:44:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-09-17 19:44:51,493 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:44:51,494 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-09-17 19:44:51,494 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 19:44:51,494 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-09-17 19:44:51,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:44:51,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1027250037, now seen corresponding path program 1 times [2024-09-17 19:44:51,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:44:51,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662310118] [2024-09-17 19:44:51,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:44:51,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:44:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:44:51,925 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 19:44:51,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:44:51,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662310118] [2024-09-17 19:44:51,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662310118] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:44:51,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:44:51,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-17 19:44:51,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348718203] [2024-09-17 19:44:51,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:44:51,929 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-17 19:44:51,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:44:51,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-17 19:44:51,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:44:51,932 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:44:52,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:44:52,019 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2024-09-17 19:44:52,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-17 19:44:52,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-09-17 19:44:52,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:44:52,021 INFO L225 Difference]: With dead ends: 30 [2024-09-17 19:44:52,021 INFO L226 Difference]: Without dead ends: 30 [2024-09-17 19:44:52,022 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:44:52,023 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 38 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:44:52,024 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 21 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:44:52,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-17 19:44:52,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-09-17 19:44:52,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.375) internal successors, (33), 28 states have internal predecessors, (33), 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 19:44:52,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-09-17 19:44:52,033 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 6 [2024-09-17 19:44:52,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:44:52,033 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-09-17 19:44:52,034 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:44:52,034 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-09-17 19:44:52,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-17 19:44:52,035 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:44:52,035 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:44:52,035 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-17 19:44:52,036 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-09-17 19:44:52,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:44:52,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1163795583, now seen corresponding path program 1 times [2024-09-17 19:44:52,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:44:52,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597748293] [2024-09-17 19:44:52,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:44:52,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:44:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:44:52,496 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 19:44:52,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:44:52,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597748293] [2024-09-17 19:44:52,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597748293] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:44:52,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:44:52,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:44:52,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705029575] [2024-09-17 19:44:52,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:44:52,499 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-17 19:44:52,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:44:52,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-17 19:44:52,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-17 19:44:52,503 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:44:52,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:44:52,567 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-09-17 19:44:52,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-17 19:44:52,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-09-17 19:44:52,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:44:52,570 INFO L225 Difference]: With dead ends: 30 [2024-09-17 19:44:52,570 INFO L226 Difference]: Without dead ends: 30 [2024-09-17 19:44:52,570 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-17 19:44:52,573 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 30 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:44:52,574 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 17 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:44:52,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-17 19:44:52,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-09-17 19:44:52,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 28 states have internal predecessors, (32), 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 19:44:52,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-09-17 19:44:52,581 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 9 [2024-09-17 19:44:52,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:44:52,581 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-09-17 19:44:52,581 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 19:44:52,581 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-09-17 19:44:52,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-17 19:44:52,582 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:44:52,583 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:44:52,583 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-17 19:44:52,583 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-09-17 19:44:52,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:44:52,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1752569050, now seen corresponding path program 1 times [2024-09-17 19:44:52,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:44:52,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230841506] [2024-09-17 19:44:52,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:44:52,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:44:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:44:53,078 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 19:44:53,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:44:53,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230841506] [2024-09-17 19:44:53,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230841506] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:44:53,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:44:53,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-17 19:44:53,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113009403] [2024-09-17 19:44:53,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:44:53,079 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-17 19:44:53,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:44:53,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-17 19:44:53,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-17 19:44:53,082 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:44:53,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:44:53,274 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2024-09-17 19:44:53,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-17 19:44:53,275 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-09-17 19:44:53,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:44:53,275 INFO L225 Difference]: With dead ends: 37 [2024-09-17 19:44:53,276 INFO L226 Difference]: Without dead ends: 37 [2024-09-17 19:44:53,276 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-09-17 19:44:53,277 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 68 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:44:53,277 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 21 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:44:53,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-17 19:44:53,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2024-09-17 19:44:53,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 32 states have internal predecessors, (36), 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 19:44:53,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-09-17 19:44:53,281 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 9 [2024-09-17 19:44:53,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:44:53,282 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-09-17 19:44:53,282 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:44:53,282 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-09-17 19:44:53,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-17 19:44:53,283 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:44:53,283 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:44:53,283 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-17 19:44:53,283 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-09-17 19:44:53,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:44:53,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1752509468, now seen corresponding path program 1 times [2024-09-17 19:44:53,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:44:53,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522508337] [2024-09-17 19:44:53,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:44:53,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:44:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:44:53,311 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 19:44:53,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:44:53,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522508337] [2024-09-17 19:44:53,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522508337] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:44:53,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:44:53,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-17 19:44:53,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635399869] [2024-09-17 19:44:53,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:44:53,314 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-17 19:44:53,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:44:53,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-17 19:44:53,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 19:44:53,316 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:44:53,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:44:53,343 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-09-17 19:44:53,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-17 19:44:53,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-09-17 19:44:53,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:44:53,344 INFO L225 Difference]: With dead ends: 28 [2024-09-17 19:44:53,344 INFO L226 Difference]: Without dead ends: 28 [2024-09-17 19:44:53,345 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 19:44:53,345 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:44:53,346 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:44:53,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-17 19:44:53,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-17 19:44:53,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 27 states have internal predecessors, (29), 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 19:44:53,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2024-09-17 19:44:53,352 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 9 [2024-09-17 19:44:53,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:44:53,352 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-09-17 19:44:53,353 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:44:53,353 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2024-09-17 19:44:53,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-17 19:44:53,354 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:44:53,354 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:44:53,354 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-17 19:44:53,355 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-09-17 19:44:53,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:44:53,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1658112263, now seen corresponding path program 1 times [2024-09-17 19:44:53,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:44:53,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122323302] [2024-09-17 19:44:53,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:44:53,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:44:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:44:53,726 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 19:44:53,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:44:53,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122323302] [2024-09-17 19:44:53,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122323302] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:44:53,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:44:53,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-17 19:44:53,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793823681] [2024-09-17 19:44:53,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:44:53,727 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-17 19:44:53,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:44:53,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-17 19:44:53,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-09-17 19:44:53,728 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 19:44:53,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:44:53,816 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2024-09-17 19:44:53,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-17 19:44:53,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 12 [2024-09-17 19:44:53,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:44:53,818 INFO L225 Difference]: With dead ends: 29 [2024-09-17 19:44:53,818 INFO L226 Difference]: Without dead ends: 28 [2024-09-17 19:44:53,818 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-09-17 19:44:53,819 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 21 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:44:53,820 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 21 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:44:53,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-17 19:44:53,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-17 19:44:53,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.16) internal successors, (29), 27 states have internal predecessors, (29), 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 19:44:53,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2024-09-17 19:44:53,827 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 12 [2024-09-17 19:44:53,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:44:53,827 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-09-17 19:44:53,827 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 19:44:53,828 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2024-09-17 19:44:53,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-17 19:44:53,828 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:44:53,828 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:44:53,828 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-17 19:44:53,829 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-09-17 19:44:53,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:44:53,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1162045690, now seen corresponding path program 1 times [2024-09-17 19:44:53,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:44:53,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367948766] [2024-09-17 19:44:53,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:44:53,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:44:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:44:54,219 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 19:44:54,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:44:54,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367948766] [2024-09-17 19:44:54,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367948766] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:44:54,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:44:54,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-17 19:44:54,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638809663] [2024-09-17 19:44:54,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:44:54,221 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-17 19:44:54,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:44:54,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-17 19:44:54,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-17 19:44:54,222 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 19:44:54,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:44:54,385 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2024-09-17 19:44:54,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-17 19:44:54,385 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 12 [2024-09-17 19:44:54,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:44:54,386 INFO L225 Difference]: With dead ends: 27 [2024-09-17 19:44:54,386 INFO L226 Difference]: Without dead ends: 27 [2024-09-17 19:44:54,386 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-09-17 19:44:54,387 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:44:54,387 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 22 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:44:54,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-17 19:44:54,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-17 19:44:54,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 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 19:44:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2024-09-17 19:44:54,390 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 12 [2024-09-17 19:44:54,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:44:54,390 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2024-09-17 19:44:54,390 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 19:44:54,391 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2024-09-17 19:44:54,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-17 19:44:54,391 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:44:54,391 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:44:54,391 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-17 19:44:54,392 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-09-17 19:44:54,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:44:54,392 INFO L85 PathProgramCache]: Analyzing trace with hash -13014756, now seen corresponding path program 1 times [2024-09-17 19:44:54,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:44:54,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103812799] [2024-09-17 19:44:54,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:44:54,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:44:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:44:54,418 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 19:44:54,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:44:54,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103812799] [2024-09-17 19:44:54,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103812799] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:44:54,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:44:54,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-17 19:44:54,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744677799] [2024-09-17 19:44:54,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:44:54,420 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-17 19:44:54,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:44:54,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-17 19:44:54,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 19:44:54,421 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 19:44:54,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:44:54,424 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2024-09-17 19:44:54,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-17 19:44:54,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 14 [2024-09-17 19:44:54,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:44:54,425 INFO L225 Difference]: With dead ends: 25 [2024-09-17 19:44:54,425 INFO L226 Difference]: Without dead ends: 16 [2024-09-17 19:44:54,425 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 19:44:54,426 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:44:54,426 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:44:54,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-17 19:44:54,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-17 19:44:54,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0) internal successors, (15), 15 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 19:44:54,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2024-09-17 19:44:54,428 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2024-09-17 19:44:54,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:44:54,430 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2024-09-17 19:44:54,430 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 19:44:54,430 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2024-09-17 19:44:54,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-17 19:44:54,431 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:44:54,431 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:44:54,431 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-17 19:44:54,432 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-09-17 19:44:54,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:44:54,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1066657452, now seen corresponding path program 1 times [2024-09-17 19:44:54,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:44:54,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001257788] [2024-09-17 19:44:54,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:44:54,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:44:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:44:54,917 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 19:44:54,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:44:54,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001257788] [2024-09-17 19:44:54,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001257788] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:44:54,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:44:54,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-09-17 19:44:54,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747868248] [2024-09-17 19:44:54,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:44:54,919 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-17 19:44:54,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:44:54,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-17 19:44:54,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-09-17 19:44:54,920 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 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 19:44:55,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:44:55,138 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2024-09-17 19:44:55,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-17 19:44:55,138 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 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) Word has length 15 [2024-09-17 19:44:55,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:44:55,139 INFO L225 Difference]: With dead ends: 15 [2024-09-17 19:44:55,139 INFO L226 Difference]: Without dead ends: 0 [2024-09-17 19:44:55,139 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-09-17 19:44:55,140 INFO L434 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:44:55,141 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:44:55,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-17 19:44:55,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-17 19:44:55,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:44:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-17 19:44:55,143 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2024-09-17 19:44:55,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:44:55,143 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-17 19:44:55,143 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 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 19:44:55,144 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-17 19:44:55,144 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-17 19:44:55,146 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION (6 of 7 remaining) [2024-09-17 19:44:55,146 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-09-17 19:44:55,147 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-09-17 19:44:55,147 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONPRE_CONDITION (3 of 7 remaining) [2024-09-17 19:44:55,147 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-09-17 19:44:55,147 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONPOST_CONDITION (1 of 7 remaining) [2024-09-17 19:44:55,148 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONPOST_CONDITION (0 of 7 remaining) [2024-09-17 19:44:55,148 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-17 19:44:55,151 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:44:55,153 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-17 19:44:55,154 INFO L469 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-09-17 19:44:55,154 INFO L470 ceAbstractionStarter]: WitnessConsidered=2 [2024-09-17 19:44:55,155 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 07:44:55 BoogieIcfgContainer [2024-09-17 19:44:55,156 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-17 19:44:55,156 INFO L158 Benchmark]: Toolchain (without parser) took 4847.90ms. Allocated memory was 182.5MB in the beginning and 224.4MB in the end (delta: 41.9MB). Free memory was 141.6MB in the beginning and 112.9MB in the end (delta: 28.7MB). Peak memory consumption was 71.1MB. Max. memory is 16.1GB. [2024-09-17 19:44:55,157 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:44:55,157 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 182.5MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:44:55,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.28ms. Allocated memory is still 182.5MB. Free memory was 141.0MB in the beginning and 126.9MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-17 19:44:55,158 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.75ms. Allocated memory is still 182.5MB. Free memory was 126.9MB in the beginning and 124.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:44:55,158 INFO L158 Benchmark]: Boogie Preprocessor took 48.55ms. Allocated memory is still 182.5MB. Free memory was 124.8MB in the beginning and 123.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:44:55,158 INFO L158 Benchmark]: RCFGBuilder took 388.56ms. Allocated memory is still 182.5MB. Free memory was 123.4MB in the beginning and 141.8MB in the end (delta: -18.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-17 19:44:55,159 INFO L158 Benchmark]: TraceAbstraction took 4065.40ms. Allocated memory was 182.5MB in the beginning and 224.4MB in the end (delta: 41.9MB). Free memory was 141.2MB in the beginning and 112.9MB in the end (delta: 28.3MB). Peak memory consumption was 72.6MB. Max. memory is 16.1GB. [2024-09-17 19:44:55,160 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 182.5MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.28ms. Allocated memory is still 182.5MB. Free memory was 141.0MB in the beginning and 126.9MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.75ms. Allocated memory is still 182.5MB. Free memory was 126.9MB in the beginning and 124.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.55ms. Allocated memory is still 182.5MB. Free memory was 124.8MB in the beginning and 123.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 388.56ms. Allocated memory is still 182.5MB. Free memory was 123.4MB in the beginning and 141.8MB in the end (delta: -18.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4065.40ms. Allocated memory was 182.5MB in the beginning and 224.4MB in the end (delta: 41.9MB). Free memory was 141.2MB in the beginning and 112.9MB in the end (delta: 28.3MB). Peak memory consumption was 72.6MB. 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: 26]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 42]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 46]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 18]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 20]: 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: 18]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 26]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 230 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 230 mSDsluCounter, 176 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 86 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 541 IncrementalHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 90 mSDtfsCounter, 541 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=4, InterpolantAutomatonStates: 59, 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, 9 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 788 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-17 19:44:55,192 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE