/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/loops/insertion_sort-2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 21:57:06,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 21:57:06,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 21:57:06,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 21:57:06,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 21:57:06,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 21:57:06,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 21:57:06,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 21:57:06,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 21:57:06,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 21:57:06,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 21:57:06,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 21:57:06,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 21:57:06,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 21:57:06,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 21:57:06,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 21:57:06,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 21:57:06,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 21:57:06,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 21:57:06,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 21:57:06,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 21:57:06,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 21:57:06,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 21:57:06,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 21:57:06,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 21:57:06,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 21:57:06,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 21:57:06,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 21:57:06,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 21:57:06,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 21:57:06,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 21:57:06,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 21:57:06,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 21:57:06,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 21:57:06,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 21:57:06,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 21:57:06,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 21:57:06,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 21:57:06,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 21:57:06,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 21:57:06,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 21:57:06,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 21:57:07,010 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 21:57:07,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 21:57:07,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 21:57:07,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 21:57:07,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 21:57:07,011 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 21:57:07,012 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 21:57:07,012 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 21:57:07,012 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 21:57:07,012 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 21:57:07,013 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 21:57:07,013 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 21:57:07,013 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 21:57:07,013 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 21:57:07,013 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 21:57:07,013 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 21:57:07,013 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 21:57:07,014 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 21:57:07,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 21:57:07,014 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 21:57:07,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 21:57:07,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 21:57:07,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 21:57:07,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 21:57:07,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 21:57:07,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 21:57:07,015 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 21:57:07,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 21:57:07,015 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 21:57:07,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 21:57:07,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 21:57:07,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 21:57:07,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:57:07,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 21:57:07,016 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 21:57:07,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 21:57:07,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 21:57:07,017 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 21:57:07,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 21:57:07,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 21:57:07,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 21:57:07,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 21:57:07,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 21:57:07,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 21:57:07,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 21:57:07,276 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 21:57:07,277 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 21:57:07,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/insertion_sort-2-2.c [2023-04-02 21:57:08,463 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 21:57:08,682 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 21:57:08,683 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/insertion_sort-2-2.c [2023-04-02 21:57:08,688 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d27099b6/4fa0e44a1cc841799d39968865bf32c9/FLAG8e78393a0 [2023-04-02 21:57:08,700 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d27099b6/4fa0e44a1cc841799d39968865bf32c9 [2023-04-02 21:57:08,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 21:57:08,704 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 21:57:08,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 21:57:08,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 21:57:08,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 21:57:08,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:57:08" (1/1) ... [2023-04-02 21:57:08,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@545924ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:57:08, skipping insertion in model container [2023-04-02 21:57:08,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:57:08" (1/1) ... [2023-04-02 21:57:08,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 21:57:08,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 21:57:08,846 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/insertion_sort-2-2.c[330,343] [2023-04-02 21:57:08,862 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:57:08,869 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 21:57:08,881 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/insertion_sort-2-2.c[330,343] [2023-04-02 21:57:08,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:57:08,899 INFO L208 MainTranslator]: Completed translation [2023-04-02 21:57:08,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:57:08 WrapperNode [2023-04-02 21:57:08,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 21:57:08,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 21:57:08,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 21:57:08,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 21:57:08,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:57:08" (1/1) ... [2023-04-02 21:57:08,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:57:08" (1/1) ... [2023-04-02 21:57:08,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:57:08" (1/1) ... [2023-04-02 21:57:08,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:57:08" (1/1) ... [2023-04-02 21:57:08,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:57:08" (1/1) ... [2023-04-02 21:57:08,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:57:08" (1/1) ... [2023-04-02 21:57:08,924 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:57:08" (1/1) ... [2023-04-02 21:57:08,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:57:08" (1/1) ... [2023-04-02 21:57:08,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 21:57:08,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 21:57:08,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 21:57:08,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 21:57:08,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:57:08" (1/1) ... [2023-04-02 21:57:08,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:57:08,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:57:08,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 21:57:08,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 21:57:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 21:57:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 21:57:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 21:57:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 21:57:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 21:57:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 21:57:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 21:57:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 21:57:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 21:57:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 21:57:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-02 21:57:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 21:57:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 21:57:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 21:57:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 21:57:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 21:57:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 21:57:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 21:57:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 21:57:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 21:57:09,067 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 21:57:09,069 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 21:57:09,309 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 21:57:09,377 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 21:57:09,378 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-04-02 21:57:09,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:57:09 BoogieIcfgContainer [2023-04-02 21:57:09,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 21:57:09,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 21:57:09,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 21:57:09,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 21:57:09,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 09:57:08" (1/3) ... [2023-04-02 21:57:09,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bbb59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:57:09, skipping insertion in model container [2023-04-02 21:57:09,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:57:08" (2/3) ... [2023-04-02 21:57:09,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bbb59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:57:09, skipping insertion in model container [2023-04-02 21:57:09,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:57:09" (3/3) ... [2023-04-02 21:57:09,395 INFO L112 eAbstractionObserver]: Analyzing ICFG insertion_sort-2-2.c [2023-04-02 21:57:09,412 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 21:57:09,413 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 21:57:09,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 21:57:09,472 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@7a41b0b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 21:57:09,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 21:57:09,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 21:57:09,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-04-02 21:57:09,483 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:57:09,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:57:09,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:57:09,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:57:09,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1829010867, now seen corresponding path program 1 times [2023-04-02 21:57:09,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:57:09,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409857625] [2023-04-02 21:57:09,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:57:09,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:57:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:57:09,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:57:09,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:57:09,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409857625] [2023-04-02 21:57:09,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409857625] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:57:09,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:57:09,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 21:57:09,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027108858] [2023-04-02 21:57:09,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:57:09,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 21:57:09,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:57:09,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 21:57:09,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 21:57:09,918 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:57:09,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:57:09,990 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2023-04-02 21:57:09,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 21:57:09,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-04-02 21:57:09,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:57:09,998 INFO L225 Difference]: With dead ends: 48 [2023-04-02 21:57:09,998 INFO L226 Difference]: Without dead ends: 24 [2023-04-02 21:57:10,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 21:57:10,004 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:57:10,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 56 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:57:10,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-04-02 21:57:10,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2023-04-02 21:57:10,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 21:57:10,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2023-04-02 21:57:10,034 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2023-04-02 21:57:10,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:57:10,035 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2023-04-02 21:57:10,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:57:10,035 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-04-02 21:57:10,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-02 21:57:10,036 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:57:10,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:57:10,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 21:57:10,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:57:10,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:57:10,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1855682508, now seen corresponding path program 1 times [2023-04-02 21:57:10,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:57:10,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97051891] [2023-04-02 21:57:10,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:57:10,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:57:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:57:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:57:10,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:57:10,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97051891] [2023-04-02 21:57:10,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97051891] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:57:10,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:57:10,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 21:57:10,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613090806] [2023-04-02 21:57:10,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:57:10,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 21:57:10,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:57:10,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 21:57:10,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 21:57:10,264 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:57:10,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:57:10,318 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2023-04-02 21:57:10,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 21:57:10,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-04-02 21:57:10,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:57:10,319 INFO L225 Difference]: With dead ends: 36 [2023-04-02 21:57:10,320 INFO L226 Difference]: Without dead ends: 22 [2023-04-02 21:57:10,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 21:57:10,321 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:57:10,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:57:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-04-02 21:57:10,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-04-02 21:57:10,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 21:57:10,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2023-04-02 21:57:10,326 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2023-04-02 21:57:10,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:57:10,326 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2023-04-02 21:57:10,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:57:10,326 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2023-04-02 21:57:10,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 21:57:10,327 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:57:10,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:57:10,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 21:57:10,327 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:57:10,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:57:10,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1432600679, now seen corresponding path program 1 times [2023-04-02 21:57:10,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:57:10,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477996502] [2023-04-02 21:57:10,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:57:10,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:57:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:57:10,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:57:10,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:57:10,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477996502] [2023-04-02 21:57:10,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477996502] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:57:10,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312899664] [2023-04-02 21:57:10,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:57:10,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:57:10,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:57:10,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 21:57:10,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 21:57:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:57:10,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-02 21:57:10,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:57:10,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:57:10,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:57:10,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:57:10,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312899664] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 21:57:10,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [625827115] [2023-04-02 21:57:10,817 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-04-02 21:57:10,817 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 21:57:10,821 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 21:57:10,826 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 21:57:10,827 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 21:57:10,920 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 18 for LOIs [2023-04-02 21:57:11,332 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 53 for LOIs [2023-04-02 21:57:11,425 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 21:57:11,432 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 21:57:12,231 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '336#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#v~0.base_BEFORE_CALL_1| Int) (v_main_~j~0_BEFORE_CALL_1 Int) (v_main_~i~0_BEFORE_CALL_1 Int) (v_main_~SIZE~0_BEFORE_CALL_1 Int) (|v_main_~#v~0.offset_BEFORE_CALL_1| Int)) (and (< 1 (mod v_main_~SIZE~0_BEFORE_CALL_1 4294967296)) (<= (mod v_main_~SIZE~0_BEFORE_CALL_1 4294967296) (mod v_main_~j~0_BEFORE_CALL_1 4294967296)) (or (and (= v_main_~j~0_BEFORE_CALL_1 1) (<= 2 |v_main_~#v~0.base_BEFORE_CALL_1|) (<= 1 |#StackHeapBarrier|) (<= 3 (+ |v_main_~#v~0.base_BEFORE_CALL_1| |#StackHeapBarrier|)) (<= (+ |#StackHeapBarrier| 1) |v_main_~#v~0.base_BEFORE_CALL_1|) (= |v_main_~#v~0.offset_BEFORE_CALL_1| 0) (= |#NULL.offset| 0) (= |#NULL.base| 0)) (and (<= 2 (+ |v_main_~#v~0.base_BEFORE_CALL_1| v_main_~i~0_BEFORE_CALL_1)) (<= 2 |v_main_~#v~0.base_BEFORE_CALL_1|) (<= 1 |#StackHeapBarrier|) (<= 3 (+ |v_main_~#v~0.base_BEFORE_CALL_1| |#StackHeapBarrier|)) (<= 1 (+ v_main_~i~0_BEFORE_CALL_1 |#StackHeapBarrier|)) (= v_main_~j~0_BEFORE_CALL_1 (+ v_main_~i~0_BEFORE_CALL_1 2)) (<= (+ |#StackHeapBarrier| 1) |v_main_~#v~0.base_BEFORE_CALL_1|) (<= 0 v_main_~i~0_BEFORE_CALL_1) (= |v_main_~#v~0.offset_BEFORE_CALL_1| 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))) (< (select (select |#memory_int| |v_main_~#v~0.base_BEFORE_CALL_1|) (+ |v_main_~#v~0.offset_BEFORE_CALL_1| 4)) (select (select |#memory_int| |v_main_~#v~0.base_BEFORE_CALL_1|) |v_main_~#v~0.offset_BEFORE_CALL_1|)))))' at error location [2023-04-02 21:57:12,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 21:57:12,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 21:57:12,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-04-02 21:57:12,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648820552] [2023-04-02 21:57:12,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 21:57:12,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 21:57:12,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:57:12,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 21:57:12,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-04-02 21:57:12,235 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:57:12,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:57:12,322 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2023-04-02 21:57:12,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 21:57:12,323 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-04-02 21:57:12,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:57:12,325 INFO L225 Difference]: With dead ends: 40 [2023-04-02 21:57:12,325 INFO L226 Difference]: Without dead ends: 26 [2023-04-02 21:57:12,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-04-02 21:57:12,329 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 21:57:12,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 84 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 21:57:12,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-04-02 21:57:12,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2023-04-02 21:57:12,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 21:57:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-04-02 21:57:12,342 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2023-04-02 21:57:12,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:57:12,342 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-04-02 21:57:12,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:57:12,342 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-04-02 21:57:12,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-02 21:57:12,344 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:57:12,344 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:57:12,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 21:57:12,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:57:12,550 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:57:12,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:57:12,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1201965868, now seen corresponding path program 2 times [2023-04-02 21:57:12,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:57:12,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391183933] [2023-04-02 21:57:12,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:57:12,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:57:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:57:13,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:57:13,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:57:13,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391183933] [2023-04-02 21:57:13,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391183933] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:57:13,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324618297] [2023-04-02 21:57:13,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 21:57:13,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:57:13,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:57:13,193 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 21:57:13,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 21:57:13,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-04-02 21:57:13,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 21:57:13,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 29 conjunts are in the unsatisfiable core [2023-04-02 21:57:13,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:57:13,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-04-02 21:57:13,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-04-02 21:57:13,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-04-02 21:57:13,413 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:57:13,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2023-04-02 21:57:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:57:13,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:57:13,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-02 21:57:13,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324618297] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 21:57:13,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [598993853] [2023-04-02 21:57:13,698 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-04-02 21:57:13,698 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 21:57:13,699 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 21:57:13,699 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 21:57:13,699 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 21:57:13,726 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 18 for LOIs [2023-04-02 21:57:13,986 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 60 for LOIs [2023-04-02 21:57:14,049 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 21:57:14,057 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 21:57:15,019 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '578#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#v~0.base_BEFORE_CALL_2| Int) (v_main_~j~0_BEFORE_CALL_2 Int) (|v_main_~#v~0.offset_BEFORE_CALL_2| Int) (v_main_~SIZE~0_BEFORE_CALL_2 Int) (v_main_~i~0_BEFORE_CALL_2 Int)) (and (or (and (= |v_main_~#v~0.offset_BEFORE_CALL_2| 0) (<= 1 |#StackHeapBarrier|) (<= (+ |#StackHeapBarrier| 1) |v_main_~#v~0.base_BEFORE_CALL_2|) (= v_main_~j~0_BEFORE_CALL_2 1) (<= 3 (+ |v_main_~#v~0.base_BEFORE_CALL_2| |#StackHeapBarrier|)) (= |#NULL.offset| 0) (= |#NULL.base| 0) (<= 2 |v_main_~#v~0.base_BEFORE_CALL_2|)) (and (= |v_main_~#v~0.offset_BEFORE_CALL_2| 0) (<= 2 v_main_~j~0_BEFORE_CALL_2) (<= 1 |#StackHeapBarrier|) (<= 0 v_main_~i~0_BEFORE_CALL_2) (= v_main_~j~0_BEFORE_CALL_2 (+ v_main_~i~0_BEFORE_CALL_2 2)) (<= 2 (+ |v_main_~#v~0.base_BEFORE_CALL_2| v_main_~i~0_BEFORE_CALL_2)) (<= (+ |#StackHeapBarrier| 1) |v_main_~#v~0.base_BEFORE_CALL_2|) (<= 2 (+ v_main_~i~0_BEFORE_CALL_2 v_main_~j~0_BEFORE_CALL_2)) (<= 4 (+ |v_main_~#v~0.base_BEFORE_CALL_2| v_main_~j~0_BEFORE_CALL_2)) (<= 3 (+ |#StackHeapBarrier| v_main_~j~0_BEFORE_CALL_2)) (<= 1 (+ v_main_~i~0_BEFORE_CALL_2 |#StackHeapBarrier|)) (<= 3 (+ |v_main_~#v~0.base_BEFORE_CALL_2| |#StackHeapBarrier|)) (= |#NULL.offset| 0) (= |#NULL.base| 0) (<= 2 |v_main_~#v~0.base_BEFORE_CALL_2|))) (< 1 (mod v_main_~SIZE~0_BEFORE_CALL_2 4294967296)) (<= (mod v_main_~SIZE~0_BEFORE_CALL_2 4294967296) (mod v_main_~j~0_BEFORE_CALL_2 4294967296)) (< (select (select |#memory_int| |v_main_~#v~0.base_BEFORE_CALL_2|) (+ |v_main_~#v~0.offset_BEFORE_CALL_2| 4)) (select (select |#memory_int| |v_main_~#v~0.base_BEFORE_CALL_2|) |v_main_~#v~0.offset_BEFORE_CALL_2|)))))' at error location [2023-04-02 21:57:15,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 21:57:15,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 21:57:15,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 11] total 23 [2023-04-02 21:57:15,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221726517] [2023-04-02 21:57:15,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 21:57:15,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-02 21:57:15,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:57:15,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-02 21:57:15,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 21:57:15,022 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:57:17,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:57:19,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:57:21,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:57:23,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:57:27,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:57:27,931 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2023-04-02 21:57:27,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-02 21:57:27,932 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-04-02 21:57:27,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:57:27,934 INFO L225 Difference]: With dead ends: 58 [2023-04-02 21:57:27,934 INFO L226 Difference]: Without dead ends: 56 [2023-04-02 21:57:27,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 32 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=280, Invalid=1881, Unknown=1, NotChecked=0, Total=2162 [2023-04-02 21:57:27,936 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 98 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 43 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-04-02 21:57:27,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 139 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 346 Invalid, 3 Unknown, 0 Unchecked, 8.5s Time] [2023-04-02 21:57:27,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-04-02 21:57:27,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 33. [2023-04-02 21:57:27,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 21:57:27,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2023-04-02 21:57:27,946 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 19 [2023-04-02 21:57:27,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:57:27,946 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2023-04-02 21:57:27,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:57:27,946 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2023-04-02 21:57:27,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-04-02 21:57:27,947 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:57:27,947 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:57:27,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 21:57:28,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-02 21:57:28,148 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:57:28,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:57:28,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1131689318, now seen corresponding path program 1 times [2023-04-02 21:57:28,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:57:28,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981990707] [2023-04-02 21:57:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:57:28,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:57:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:57:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:57:28,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:57:28,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981990707] [2023-04-02 21:57:28,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981990707] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:57:28,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47087048] [2023-04-02 21:57:28,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:57:28,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:57:28,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:57:28,789 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 21:57:28,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 21:57:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:57:28,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 31 conjunts are in the unsatisfiable core [2023-04-02 21:57:28,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:57:28,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-04-02 21:57:28,981 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:57:28,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 23 [2023-04-02 21:57:28,998 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:57:28,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2023-04-02 21:57:29,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 21:57:29,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:57:29,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 62 [2023-04-02 21:57:29,230 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-04-02 21:57:29,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 260 treesize of output 232 [2023-04-02 21:57:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-02 21:57:29,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47087048] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 21:57:29,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1121375268] [2023-04-02 21:57:29,315 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-04-02 21:57:29,315 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 21:57:29,315 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 21:57:29,315 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 21:57:29,316 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 21:57:29,350 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 18 for LOIs [2023-04-02 21:57:29,544 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 53 for LOIs [2023-04-02 21:57:29,588 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 21:57:29,592 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 21:57:30,386 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '899#(and (exists ((v_main_~j~0_BEFORE_CALL_3 Int) (|v_main_~#v~0.base_BEFORE_CALL_3| Int) (|v_main_~#v~0.offset_BEFORE_CALL_3| Int) (v_main_~SIZE~0_BEFORE_CALL_3 Int) (v_main_~i~0_BEFORE_CALL_3 Int)) (and (< 1 (mod v_main_~SIZE~0_BEFORE_CALL_3 4294967296)) (<= (mod v_main_~SIZE~0_BEFORE_CALL_3 4294967296) (mod v_main_~j~0_BEFORE_CALL_3 4294967296)) (< (select (select |#memory_int| |v_main_~#v~0.base_BEFORE_CALL_3|) (+ |v_main_~#v~0.offset_BEFORE_CALL_3| 4)) (select (select |#memory_int| |v_main_~#v~0.base_BEFORE_CALL_3|) |v_main_~#v~0.offset_BEFORE_CALL_3|)) (or (and (<= 2 |v_main_~#v~0.base_BEFORE_CALL_3|) (<= 1 |#StackHeapBarrier|) (= v_main_~j~0_BEFORE_CALL_3 1) (<= (+ |#StackHeapBarrier| 1) |v_main_~#v~0.base_BEFORE_CALL_3|) (= |#NULL.offset| 0) (<= 3 (+ |v_main_~#v~0.base_BEFORE_CALL_3| |#StackHeapBarrier|)) (= |v_main_~#v~0.offset_BEFORE_CALL_3| 0) (= |#NULL.base| 0)) (and (<= 2 |v_main_~#v~0.base_BEFORE_CALL_3|) (<= 1 |#StackHeapBarrier|) (<= (+ v_main_~i~0_BEFORE_CALL_3 2) v_main_~j~0_BEFORE_CALL_3) (<= 4 (+ |v_main_~#v~0.base_BEFORE_CALL_3| v_main_~j~0_BEFORE_CALL_3)) (<= 2 v_main_~j~0_BEFORE_CALL_3) (<= (+ |#StackHeapBarrier| 1) |v_main_~#v~0.base_BEFORE_CALL_3|) (= |#NULL.offset| 0) (<= 3 (+ |#StackHeapBarrier| v_main_~j~0_BEFORE_CALL_3)) (<= 3 (+ |v_main_~#v~0.base_BEFORE_CALL_3| |#StackHeapBarrier|)) (= |v_main_~#v~0.offset_BEFORE_CALL_3| 0) (= |#NULL.base| 0))))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 21:57:30,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 21:57:30,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 21:57:30,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 24 [2023-04-02 21:57:30,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087816413] [2023-04-02 21:57:30,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 21:57:30,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-02 21:57:30,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:57:30,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-02 21:57:30,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1133, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 21:57:30,388 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 24 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:57:30,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:57:30,821 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2023-04-02 21:57:30,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 21:57:30,821 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-04-02 21:57:30,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:57:30,823 INFO L225 Difference]: With dead ends: 72 [2023-04-02 21:57:30,824 INFO L226 Difference]: Without dead ends: 59 [2023-04-02 21:57:30,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=206, Invalid=1686, Unknown=0, NotChecked=0, Total=1892 [2023-04-02 21:57:30,825 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 61 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 21:57:30,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 138 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 21:57:30,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-04-02 21:57:30,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 39. [2023-04-02 21:57:30,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 32 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 21:57:30,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2023-04-02 21:57:30,836 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 21 [2023-04-02 21:57:30,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:57:30,836 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2023-04-02 21:57:30,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:57:30,836 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2023-04-02 21:57:30,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-02 21:57:30,837 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:57:30,837 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:57:30,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 21:57:31,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:57:31,043 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:57:31,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:57:31,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1431447644, now seen corresponding path program 1 times [2023-04-02 21:57:31,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:57:31,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023754983] [2023-04-02 21:57:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:57:31,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:57:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:57:31,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 21:57:31,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:57:31,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023754983] [2023-04-02 21:57:31,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023754983] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:57:31,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834331901] [2023-04-02 21:57:31,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:57:31,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:57:31,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:57:31,197 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 21:57:31,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 21:57:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:57:31,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-02 21:57:31,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:57:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 21:57:31,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:57:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 21:57:31,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834331901] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 21:57:31,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1106774773] [2023-04-02 21:57:31,561 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-04-02 21:57:31,561 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 21:57:31,561 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 21:57:31,561 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 21:57:31,561 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 21:57:31,581 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 18 for LOIs [2023-04-02 21:57:32,035 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 60 for LOIs [2023-04-02 21:57:32,111 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 21:57:32,115 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 21:57:39,203 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1262#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#v~0.offset_BEFORE_CALL_8| Int) (|v_main_~#v~0.base_BEFORE_CALL_8| Int) (v_main_~j~0_BEFORE_CALL_8 Int) (v_main_~k~0_BEFORE_CALL_10 Int) (v_main_~SIZE~0_BEFORE_CALL_10 Int)) (and (or (and (<= 1 |#StackHeapBarrier|) (<= 2 |v_main_~#v~0.base_BEFORE_CALL_8|) (<= 3 (+ |v_main_~#v~0.base_BEFORE_CALL_8| v_main_~j~0_BEFORE_CALL_8)) (<= 1 v_main_~k~0_BEFORE_CALL_10) (<= 3 (+ |v_main_~#v~0.base_BEFORE_CALL_8| |#StackHeapBarrier|)) (<= (+ |#StackHeapBarrier| 1) |v_main_~#v~0.base_BEFORE_CALL_8|) (<= 2 (+ v_main_~j~0_BEFORE_CALL_8 v_main_~k~0_BEFORE_CALL_10)) (= |v_main_~#v~0.offset_BEFORE_CALL_8| 0) (<= 3 (+ |v_main_~#v~0.base_BEFORE_CALL_8| v_main_~k~0_BEFORE_CALL_10)) (= |#NULL.offset| 0) (<= 2 (+ |#StackHeapBarrier| v_main_~k~0_BEFORE_CALL_10)) (<= 2 (+ |#StackHeapBarrier| v_main_~j~0_BEFORE_CALL_8)) (= |#NULL.base| 0) (<= 1 v_main_~j~0_BEFORE_CALL_8)) (and (<= 1 |#StackHeapBarrier|) (<= 2 |v_main_~#v~0.base_BEFORE_CALL_8|) (<= 3 (+ v_main_~j~0_BEFORE_CALL_8 v_main_~k~0_BEFORE_CALL_10)) (<= 1 v_main_~k~0_BEFORE_CALL_10) (<= 3 (+ |v_main_~#v~0.base_BEFORE_CALL_8| |#StackHeapBarrier|)) (<= (+ |#StackHeapBarrier| 1) |v_main_~#v~0.base_BEFORE_CALL_8|) (= |v_main_~#v~0.offset_BEFORE_CALL_8| 0) (<= 3 (+ |v_main_~#v~0.base_BEFORE_CALL_8| v_main_~k~0_BEFORE_CALL_10)) (= |#NULL.offset| 0) (<= 2 (+ |#StackHeapBarrier| v_main_~k~0_BEFORE_CALL_10)) (= |#NULL.base| 0))) (< (select (select |#memory_int| |v_main_~#v~0.base_BEFORE_CALL_8|) (+ (* v_main_~k~0_BEFORE_CALL_10 4) |v_main_~#v~0.offset_BEFORE_CALL_8|)) (select (select |#memory_int| |v_main_~#v~0.base_BEFORE_CALL_8|) (+ (* v_main_~k~0_BEFORE_CALL_10 4) (- 4) |v_main_~#v~0.offset_BEFORE_CALL_8|))) (< (mod v_main_~k~0_BEFORE_CALL_10 4294967296) (mod v_main_~SIZE~0_BEFORE_CALL_10 4294967296)))))' at error location [2023-04-02 21:57:39,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 21:57:39,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 21:57:39,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2023-04-02 21:57:39,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029461568] [2023-04-02 21:57:39,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 21:57:39,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 21:57:39,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:57:39,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 21:57:39,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=720, Unknown=3, NotChecked=0, Total=812 [2023-04-02 21:57:39,205 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 21:57:39,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:57:39,400 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2023-04-02 21:57:39,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 21:57:39,401 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2023-04-02 21:57:39,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:57:39,402 INFO L225 Difference]: With dead ends: 84 [2023-04-02 21:57:39,402 INFO L226 Difference]: Without dead ends: 48 [2023-04-02 21:57:39,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=117, Invalid=936, Unknown=3, NotChecked=0, Total=1056 [2023-04-02 21:57:39,403 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 21:57:39,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 138 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 21:57:39,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-04-02 21:57:39,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2023-04-02 21:57:39,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 35 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 21:57:39,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2023-04-02 21:57:39,412 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 26 [2023-04-02 21:57:39,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:57:39,412 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2023-04-02 21:57:39,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 21:57:39,412 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2023-04-02 21:57:39,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-02 21:57:39,413 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:57:39,413 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:57:39,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 21:57:39,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:57:39,619 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:57:39,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:57:39,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1143119168, now seen corresponding path program 2 times [2023-04-02 21:57:39,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:57:39,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857660105] [2023-04-02 21:57:39,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:57:39,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:57:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:57:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 21:57:40,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:57:40,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857660105] [2023-04-02 21:57:40,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857660105] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:57:40,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466957818] [2023-04-02 21:57:40,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 21:57:40,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:57:40,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:57:40,384 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 21:57:40,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 21:57:40,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-04-02 21:57:40,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 21:57:40,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2023-04-02 21:57:40,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:57:40,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-04-02 21:57:40,603 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:57:40,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2023-04-02 21:57:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-02 21:57:40,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:57:40,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2023-04-02 21:57:40,775 INFO L321 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2023-04-02 21:57:40,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 80 [2023-04-02 21:57:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-02 21:57:40,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466957818] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 21:57:40,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [35976278] [2023-04-02 21:57:40,886 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-04-02 21:57:40,886 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 21:57:40,886 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 21:57:40,886 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 21:57:40,886 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 21:57:40,905 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 18 for LOIs [2023-04-02 21:57:41,161 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 47 for LOIs [2023-04-02 21:57:41,188 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 21:57:41,192 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 21:57:43,853 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1658#(and (exists ((v_main_~i~0_BEFORE_CALL_6 Int) (|v_main_~#v~0.offset_BEFORE_CALL_11| Int) (|v_main_~#v~0.base_BEFORE_CALL_11| Int) (v_main_~SIZE~0_BEFORE_CALL_13 Int) (v_main_~j~0_BEFORE_CALL_11 Int)) (and (<= (mod v_main_~SIZE~0_BEFORE_CALL_13 4294967296) (mod v_main_~j~0_BEFORE_CALL_11 4294967296)) (< (select (select |#memory_int| |v_main_~#v~0.base_BEFORE_CALL_11|) (+ |v_main_~#v~0.offset_BEFORE_CALL_11| 4)) (select (select |#memory_int| |v_main_~#v~0.base_BEFORE_CALL_11|) |v_main_~#v~0.offset_BEFORE_CALL_11|)) (< 1 (mod v_main_~SIZE~0_BEFORE_CALL_13 4294967296)) (or (and (<= 1 |#StackHeapBarrier|) (<= 3 (+ |v_main_~#v~0.base_BEFORE_CALL_11| |#StackHeapBarrier|)) (= v_main_~j~0_BEFORE_CALL_11 1) (<= 2 |v_main_~#v~0.base_BEFORE_CALL_11|) (= |v_main_~#v~0.offset_BEFORE_CALL_11| 0) (= |#NULL.offset| 0) (<= (+ |#StackHeapBarrier| 1) |v_main_~#v~0.base_BEFORE_CALL_11|) (= |#NULL.base| 0)) (<= (+ v_main_~i~0_BEFORE_CALL_6 2) v_main_~j~0_BEFORE_CALL_11)))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 21:57:43,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 21:57:43,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 21:57:43,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 13] total 27 [2023-04-02 21:57:43,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812732025] [2023-04-02 21:57:43,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 21:57:43,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-04-02 21:57:43,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:57:43,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-04-02 21:57:43,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1508, Unknown=1, NotChecked=0, Total=1640 [2023-04-02 21:57:43,856 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 25 states have internal predecessors, (46), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:57:48,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:57:48,722 INFO L93 Difference]: Finished difference Result 94 states and 114 transitions. [2023-04-02 21:57:48,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-02 21:57:48,722 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 25 states have internal predecessors, (46), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-04-02 21:57:48,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:57:48,723 INFO L225 Difference]: With dead ends: 94 [2023-04-02 21:57:48,723 INFO L226 Difference]: Without dead ends: 92 [2023-04-02 21:57:48,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=365, Invalid=3172, Unknown=3, NotChecked=0, Total=3540 [2023-04-02 21:57:48,726 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 145 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 21:57:48,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 155 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 21:57:48,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-04-02 21:57:48,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 50. [2023-04-02 21:57:48,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 43 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 21:57:48,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2023-04-02 21:57:48,737 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 26 [2023-04-02 21:57:48,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:57:48,737 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2023-04-02 21:57:48,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 25 states have internal predecessors, (46), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:57:48,738 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2023-04-02 21:57:48,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-02 21:57:48,738 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:57:48,738 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:57:48,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 21:57:48,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:57:48,947 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:57:48,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:57:48,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1571654656, now seen corresponding path program 3 times [2023-04-02 21:57:48,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:57:48,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432342105] [2023-04-02 21:57:48,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:57:48,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:57:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:57:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 21:57:49,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:57:49,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432342105] [2023-04-02 21:57:49,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432342105] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:57:49,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717716848] [2023-04-02 21:57:49,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 21:57:49,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:57:49,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:57:49,689 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 21:57:49,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 21:57:49,752 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 21:57:49,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 21:57:49,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 34 conjunts are in the unsatisfiable core [2023-04-02 21:57:49,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:57:49,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2023-04-02 21:57:49,971 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:57:49,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 31 [2023-04-02 21:57:50,019 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:57:50,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2023-04-02 21:57:50,066 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:57:50,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2023-04-02 21:57:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-02 21:57:50,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:57:52,260 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_143 Int)) (let ((.cse0 (store (select |c_#memory_int| |c_main_~#v~0.base|) (+ |c_main_~#v~0.offset| (* c_main_~j~0 4)) v_ArrVal_143))) (< (select .cse0 |c_main_~#v~0.offset|) (+ (select .cse0 (+ |c_main_~#v~0.offset| 4)) 1)))) is different from false [2023-04-02 21:57:56,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 78 [2023-04-02 21:57:56,502 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:57:56,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30922 treesize of output 29390 [2023-04-02 21:57:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 2 not checked. [2023-04-02 21:57:56,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717716848] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 21:57:56,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2079530180] [2023-04-02 21:57:56,814 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-04-02 21:57:56,814 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 21:57:56,814 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 21:57:56,814 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 21:57:56,814 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 21:57:56,835 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 18 for LOIs [2023-04-02 21:57:57,057 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 47 for LOIs [2023-04-02 21:57:57,081 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 21:57:57,085 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 21:57:59,755 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2112#(and (exists ((v_main_~i~0_BEFORE_CALL_7 Int) (|v_main_~#v~0.base_BEFORE_CALL_12| Int) (v_main_~j~0_BEFORE_CALL_12 Int) (|v_main_~#v~0.offset_BEFORE_CALL_12| Int) (v_main_~SIZE~0_BEFORE_CALL_14 Int)) (and (<= (mod v_main_~SIZE~0_BEFORE_CALL_14 4294967296) (mod v_main_~j~0_BEFORE_CALL_12 4294967296)) (or (and (<= 1 |#StackHeapBarrier|) (<= 3 (+ |v_main_~#v~0.base_BEFORE_CALL_12| |#StackHeapBarrier|)) (<= 2 |v_main_~#v~0.base_BEFORE_CALL_12|) (= |#NULL.offset| 0) (= |v_main_~#v~0.offset_BEFORE_CALL_12| 0) (= v_main_~j~0_BEFORE_CALL_12 1) (<= (+ |#StackHeapBarrier| 1) |v_main_~#v~0.base_BEFORE_CALL_12|) (= |#NULL.base| 0)) (<= (+ v_main_~i~0_BEFORE_CALL_7 2) v_main_~j~0_BEFORE_CALL_12)) (< 1 (mod v_main_~SIZE~0_BEFORE_CALL_14 4294967296)) (< (select (select |#memory_int| |v_main_~#v~0.base_BEFORE_CALL_12|) (+ |v_main_~#v~0.offset_BEFORE_CALL_12| 4)) (select (select |#memory_int| |v_main_~#v~0.base_BEFORE_CALL_12|) |v_main_~#v~0.offset_BEFORE_CALL_12|)))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 21:57:59,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 21:57:59,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 21:57:59,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 13] total 32 [2023-04-02 21:57:59,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981600654] [2023-04-02 21:57:59,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 21:57:59,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-04-02 21:57:59,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:57:59,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-04-02 21:57:59,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1795, Unknown=3, NotChecked=86, Total=2070 [2023-04-02 21:57:59,758 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 32 states, 30 states have (on average 1.7) internal successors, (51), 30 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:58:10,169 WARN L223 SmtUtils]: Spent 10.08s on a formula simplification. DAG size of input: 50 DAG size of output: 37 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 21:58:12,344 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_main_~#v~0.offset| 4)) (.cse2 (select |c_#memory_int| |c_main_~#v~0.base|)) (.cse3 (* c_main_~j~0 4))) (and (forall ((v_ArrVal_143 Int)) (let ((.cse0 (store .cse2 (+ |c_main_~#v~0.offset| .cse3) v_ArrVal_143))) (< (select .cse0 |c_main_~#v~0.offset|) (+ (select .cse0 .cse1) 1)))) (<= (+ (select .cse2 0) 1) (select .cse2 4)) (= c_main_~i~0 1) (= |c_main_~#v~0.offset| 0) (forall ((v_ArrVal_143 Int) (v_ArrVal_141 Int)) (or (< c_main_~key~0 v_ArrVal_141) (let ((.cse4 (store (store .cse2 (+ (* c_main_~i~0 4) |c_main_~#v~0.offset| 4) v_ArrVal_141) (+ |c_main_~#v~0.offset| .cse3 4) v_ArrVal_143))) (< (select .cse4 |c_main_~#v~0.offset|) (+ (select .cse4 .cse1) 1))))))) is different from false [2023-04-02 21:58:14,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:58:16,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:58:18,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:58:42,734 WARN L223 SmtUtils]: Spent 24.20s on a formula simplification. DAG size of input: 40 DAG size of output: 37 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 21:58:44,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:58:46,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:59:11,874 WARN L223 SmtUtils]: Spent 24.95s on a formula simplification. DAG size of input: 56 DAG size of output: 53 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 21:59:13,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:59:15,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:59:18,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:59:20,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:59:22,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:59:24,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:59:30,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:59:32,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:59:34,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:59:36,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:59:38,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:59:49,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:59:51,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:59:57,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:59:59,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:00:11,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:00:13,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:00:15,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:00:34,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:00:36,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:00:38,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:00:40,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:00:42,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:00:44,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:00:46,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:00:48,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:00:50,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:00:52,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:01:00,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:01:02,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:01:04,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:01:14,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:01:16,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:01:18,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:01:20,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:01:22,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:01:24,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:01:26,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:01:28,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:01:30,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:01:32,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:01:34,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:01:36,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 22:01:38,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]