/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 EqDomain -i ../sv-benchmarks/c/heap-data/min_max.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 10:59:57,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 10:59:57,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 10:59:57,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 10:59:57,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 10:59:57,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 10:59:57,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 10:59:57,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 10:59:57,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 10:59:57,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 10:59:57,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 10:59:57,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 10:59:57,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 10:59:57,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 10:59:57,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 10:59:57,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 10:59:57,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 10:59:57,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 10:59:57,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 10:59:57,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 10:59:57,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 10:59:57,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 10:59:57,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 10:59:57,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 10:59:57,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 10:59:57,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 10:59:57,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 10:59:57,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 10:59:57,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 10:59:57,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 10:59:57,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 10:59:57,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 10:59:57,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 10:59:57,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 10:59:57,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 10:59:57,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 10:59:57,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 10:59:57,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 10:59:57,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 10:59:57,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 10:59:57,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 10:59:57,423 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 [2023-04-01 10:59:57,464 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 10:59:57,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 10:59:57,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 10:59:57,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 10:59:57,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 10:59:57,467 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 10:59:57,467 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 10:59:57,467 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 10:59:57,467 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 10:59:57,467 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 10:59:57,468 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 10:59:57,468 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 10:59:57,468 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 10:59:57,469 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 10:59:57,469 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 10:59:57,469 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 10:59:57,469 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 10:59:57,469 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 10:59:57,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 10:59:57,470 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 10:59:57,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 10:59:57,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 10:59:57,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 10:59:57,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 10:59:57,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 10:59:57,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 10:59:57,471 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 10:59:57,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 10:59:57,471 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 10:59:57,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 10:59:57,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 10:59:57,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 10:59:57,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 10:59:57,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 10:59:57,472 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 10:59:57,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 10:59:57,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 10:59:57,473 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 10:59:57,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 10:59:57,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 10:59:57,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 10:59:57,473 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 10:59:57,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 10:59:57,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 10:59:57,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 10:59:57,737 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 10:59:57,738 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 10:59:57,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-data/min_max.i [2023-04-01 10:59:58,939 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 10:59:59,233 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 10:59:59,233 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/min_max.i [2023-04-01 10:59:59,252 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74e904e0/dc71ccdad1ba4741a58f957d76652e52/FLAGdb277b67e [2023-04-01 10:59:59,269 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74e904e0/dc71ccdad1ba4741a58f957d76652e52 [2023-04-01 10:59:59,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 10:59:59,276 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 10:59:59,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 10:59:59,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 10:59:59,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 10:59:59,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:59:59" (1/1) ... [2023-04-01 10:59:59,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc73882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:59:59, skipping insertion in model container [2023-04-01 10:59:59,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:59:59" (1/1) ... [2023-04-01 10:59:59,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 10:59:59,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 10:59:59,639 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/heap-data/min_max.i[23535,23548] [2023-04-01 10:59:59,643 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/heap-data/min_max.i[23590,23603] [2023-04-01 10:59:59,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 10:59:59,652 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 10:59:59,689 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/heap-data/min_max.i[23535,23548] [2023-04-01 10:59:59,690 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/heap-data/min_max.i[23590,23603] [2023-04-01 10:59:59,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 10:59:59,711 INFO L208 MainTranslator]: Completed translation [2023-04-01 10:59:59,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:59:59 WrapperNode [2023-04-01 10:59:59,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 10:59:59,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 10:59:59,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 10:59:59,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 10:59:59,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:59:59" (1/1) ... [2023-04-01 10:59:59,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:59:59" (1/1) ... [2023-04-01 10:59:59,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:59:59" (1/1) ... [2023-04-01 10:59:59,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:59:59" (1/1) ... [2023-04-01 10:59:59,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:59:59" (1/1) ... [2023-04-01 10:59:59,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:59:59" (1/1) ... [2023-04-01 10:59:59,767 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:59:59" (1/1) ... [2023-04-01 10:59:59,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:59:59" (1/1) ... [2023-04-01 10:59:59,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 10:59:59,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 10:59:59,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 10:59:59,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 10:59:59,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:59:59" (1/1) ... [2023-04-01 10:59:59,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 10:59:59,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 10:59:59,806 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) [2023-04-01 10:59:59,808 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 [2023-04-01 10:59:59,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 10:59:59,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 10:59:59,839 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 10:59:59,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-04-01 10:59:59,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-04-01 10:59:59,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 10:59:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 10:59:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 10:59:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 10:59:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 10:59:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 10:59:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 10:59:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 10:59:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-04-01 10:59:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-04-01 10:59:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-01 10:59:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-01 10:59:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-01 10:59:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-01 10:59:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-01 10:59:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-01 10:59:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-01 10:59:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-01 10:59:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-01 10:59:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-01 10:59:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-01 10:59:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-01 10:59:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-01 10:59:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-01 10:59:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-01 10:59:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-01 10:59:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-01 10:59:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-01 10:59:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-01 10:59:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-01 10:59:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-01 10:59:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-01 10:59:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-01 10:59:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-01 10:59:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-01 10:59:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-01 10:59:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-01 10:59:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-01 10:59:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-01 10:59:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-01 10:59:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-01 10:59:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-01 10:59:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-01 10:59:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-01 10:59:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-01 10:59:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-01 10:59:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-01 10:59:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-01 10:59:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-01 10:59:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-01 10:59:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-01 10:59:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-01 10:59:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-01 10:59:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-01 10:59:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-01 10:59:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-01 10:59:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-01 10:59:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-01 10:59:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-01 10:59:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-01 10:59:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 10:59:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-01 10:59:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-01 10:59:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 10:59:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-04-01 10:59:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-01 10:59:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-01 10:59:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-01 10:59:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-04-01 10:59:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-01 10:59:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-04-01 10:59:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-01 10:59:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 10:59:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-04-01 10:59:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-01 10:59:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-01 10:59:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-01 10:59:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-01 10:59:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-01 10:59:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-01 10:59:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-01 10:59:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-01 10:59:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-01 10:59:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-01 10:59:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-01 10:59:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-01 10:59:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-01 10:59:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-01 10:59:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-01 10:59:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-01 10:59:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-01 10:59:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-01 10:59:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-01 10:59:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-01 10:59:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-01 10:59:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-01 10:59:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-01 10:59:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-01 10:59:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-01 10:59:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-01 10:59:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-01 10:59:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-01 10:59:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-01 10:59:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-01 10:59:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-01 10:59:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-01 10:59:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-01 10:59:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-01 10:59:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-01 10:59:59,860 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-01 10:59:59,860 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-01 10:59:59,860 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-01 10:59:59,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 10:59:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 10:59:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 10:59:59,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 10:59:59,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 10:59:59,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 10:59:59,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 10:59:59,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 10:59:59,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 10:59:59,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 11:00:00,147 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 11:00:00,150 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 11:00:00,291 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 11:00:00,345 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 11:00:00,345 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-04-01 11:00:00,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:00:00 BoogieIcfgContainer [2023-04-01 11:00:00,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 11:00:00,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 11:00:00,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 11:00:00,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 11:00:00,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:59:59" (1/3) ... [2023-04-01 11:00:00,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b6885f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:00:00, skipping insertion in model container [2023-04-01 11:00:00,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:59:59" (2/3) ... [2023-04-01 11:00:00,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b6885f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:00:00, skipping insertion in model container [2023-04-01 11:00:00,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:00:00" (3/3) ... [2023-04-01 11:00:00,357 INFO L112 eAbstractionObserver]: Analyzing ICFG min_max.i [2023-04-01 11:00:00,378 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 11:00:00,378 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-04-01 11:00:00,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 11:00:00,425 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;@5ade6c93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 11:00:00,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-04-01 11:00:00,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 11:00:00,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-04-01 11:00:00,436 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:00:00,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:00:00,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:00:00,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:00:00,442 INFO L85 PathProgramCache]: Analyzing trace with hash -453266261, now seen corresponding path program 1 times [2023-04-01 11:00:00,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:00:00,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883134177] [2023-04-01 11:00:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:00:00,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:00:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:00:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:00:00,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:00:00,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883134177] [2023-04-01 11:00:00,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883134177] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:00:00,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 11:00:00,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 11:00:00,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224380006] [2023-04-01 11:00:00,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:00:00,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 11:00:00,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:00:00,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 11:00:00,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 11:00:00,611 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:00,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:00:00,652 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2023-04-01 11:00:00,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 11:00:00,654 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-04-01 11:00:00,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:00:00,660 INFO L225 Difference]: With dead ends: 33 [2023-04-01 11:00:00,660 INFO L226 Difference]: Without dead ends: 17 [2023-04-01 11:00:00,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 11:00:00,666 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 11:00:00,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 11:00:00,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-04-01 11:00:00,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-04-01 11:00:00,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2023-04-01 11:00:00,698 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2023-04-01 11:00:00,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:00:00,699 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2023-04-01 11:00:00,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:00,700 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2023-04-01 11:00:00,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-04-01 11:00:00,701 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:00:00,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:00:00,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 11:00:00,702 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:00:00,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:00:00,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1756753104, now seen corresponding path program 1 times [2023-04-01 11:00:00,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:00:00,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385434360] [2023-04-01 11:00:00,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:00:00,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:00:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:00:00,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:00:00,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:00:00,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385434360] [2023-04-01 11:00:00,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385434360] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:00:00,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 11:00:00,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 11:00:00,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516183428] [2023-04-01 11:00:00,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:00:00,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 11:00:00,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:00:00,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 11:00:00,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 11:00:00,834 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:00,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:00:00,865 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2023-04-01 11:00:00,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 11:00:00,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-04-01 11:00:00,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:00:00,866 INFO L225 Difference]: With dead ends: 30 [2023-04-01 11:00:00,866 INFO L226 Difference]: Without dead ends: 19 [2023-04-01 11:00:00,867 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 [2023-04-01 11:00:00,868 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 11:00:00,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 11:00:00,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-04-01 11:00:00,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-04-01 11:00:00,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2023-04-01 11:00:00,873 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2023-04-01 11:00:00,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:00:00,873 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2023-04-01 11:00:00,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:00,873 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2023-04-01 11:00:00,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-04-01 11:00:00,874 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:00:00,874 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:00:00,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 11:00:00,874 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:00:00,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:00:00,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1909573946, now seen corresponding path program 1 times [2023-04-01 11:00:00,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:00:00,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127278091] [2023-04-01 11:00:00,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:00:00,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:00:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:00:01,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:00:01,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:00:01,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127278091] [2023-04-01 11:00:01,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127278091] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:00:01,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 11:00:01,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 11:00:01,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595305860] [2023-04-01 11:00:01,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:00:01,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 11:00:01,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:00:01,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 11:00:01,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 11:00:01,347 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:01,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:00:01,430 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2023-04-01 11:00:01,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 11:00:01,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-04-01 11:00:01,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:00:01,432 INFO L225 Difference]: With dead ends: 28 [2023-04-01 11:00:01,432 INFO L226 Difference]: Without dead ends: 26 [2023-04-01 11:00:01,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 11:00:01,436 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 23 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 11:00:01,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 35 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 11:00:01,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-04-01 11:00:01,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2023-04-01 11:00:01,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:01,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-04-01 11:00:01,441 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 13 [2023-04-01 11:00:01,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:00:01,441 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-04-01 11:00:01,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:01,441 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-04-01 11:00:01,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-04-01 11:00:01,442 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:00:01,442 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:00:01,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 11:00:01,442 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:00:01,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:00:01,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1149652572, now seen corresponding path program 1 times [2023-04-01 11:00:01,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:00:01,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225709000] [2023-04-01 11:00:01,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:00:01,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:00:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:00:01,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:00:01,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:00:01,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225709000] [2023-04-01 11:00:01,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225709000] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:00:01,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 11:00:01,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 11:00:01,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572713371] [2023-04-01 11:00:01,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:00:01,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 11:00:01,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:00:01,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 11:00:01,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 11:00:01,713 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:01,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:00:01,796 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2023-04-01 11:00:01,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 11:00:01,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-04-01 11:00:01,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:00:01,798 INFO L225 Difference]: With dead ends: 26 [2023-04-01 11:00:01,798 INFO L226 Difference]: Without dead ends: 24 [2023-04-01 11:00:01,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-01 11:00:01,807 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 11:00:01,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 33 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 11:00:01,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-04-01 11:00:01,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2023-04-01 11:00:01,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:01,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-04-01 11:00:01,820 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2023-04-01 11:00:01,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:00:01,820 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-04-01 11:00:01,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:01,820 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-04-01 11:00:01,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-01 11:00:01,822 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:00:01,822 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:00:01,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 11:00:01,822 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:00:01,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:00:01,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1234443955, now seen corresponding path program 1 times [2023-04-01 11:00:01,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:00:01,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648982091] [2023-04-01 11:00:01,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:00:01,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:00:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:00:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:00:02,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:00:02,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648982091] [2023-04-01 11:00:02,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648982091] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 11:00:02,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100039585] [2023-04-01 11:00:02,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:00:02,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:00:02,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:00:02,069 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) [2023-04-01 11:00:02,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 11:00:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:00:02,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-01 11:00:02,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:00:02,343 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 [2023-04-01 11:00:02,348 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 [2023-04-01 11:00:02,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:00:02,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 11:00:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:00:02,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100039585] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 11:00:02,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [674913205] [2023-04-01 11:00:02,532 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-04-01 11:00:02,532 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 11:00:02,535 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 11:00:02,539 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 11:00:02,540 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 11:00:02,626 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 49 for LOIs [2023-04-01 11:00:03,489 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 11:00:03,499 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 11:00:04,086 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '423#(exists ((|v_main_#t~mem10_11| Int)) (and (or (= (select (select |#memory_int| main_~i~0.base) 4) |v_main_#t~mem10_11|) (= (select (select |#memory_int| main_~i~0.base) (+ main_~i~0.offset 4)) |v_main_#t~mem10_11|)) (< |v_main_#t~mem10_11| main_~min~0)))' at error location [2023-04-01 11:00:04,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 11:00:04,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 11:00:04,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2023-04-01 11:00:04,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485321022] [2023-04-01 11:00:04,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 11:00:04,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 11:00:04,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:00:04,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 11:00:04,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-04-01 11:00:04,089 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:04,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:00:04,167 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2023-04-01 11:00:04,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 11:00:04,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-04-01 11:00:04,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:00:04,169 INFO L225 Difference]: With dead ends: 41 [2023-04-01 11:00:04,169 INFO L226 Difference]: Without dead ends: 25 [2023-04-01 11:00:04,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2023-04-01 11:00:04,170 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 11:00:04,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 89 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 11:00:04,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-04-01 11:00:04,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-04-01 11:00:04,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:04,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2023-04-01 11:00:04,174 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2023-04-01 11:00:04,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:00:04,174 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2023-04-01 11:00:04,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:04,174 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2023-04-01 11:00:04,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-04-01 11:00:04,175 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:00:04,175 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:00:04,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 11:00:04,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:00:04,382 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:00:04,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:00:04,383 INFO L85 PathProgramCache]: Analyzing trace with hash -35690135, now seen corresponding path program 2 times [2023-04-01 11:00:04,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:00:04,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049477697] [2023-04-01 11:00:04,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:00:04,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:00:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:00:05,238 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:00:05,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:00:05,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049477697] [2023-04-01 11:00:05,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049477697] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 11:00:05,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235817509] [2023-04-01 11:00:05,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 11:00:05,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:00:05,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:00:05,241 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) [2023-04-01 11:00:05,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 11:00:05,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-01 11:00:05,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 11:00:05,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 44 conjunts are in the unsatisfiable core [2023-04-01 11:00:05,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:00:05,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-04-01 11:00:05,527 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-04-01 11:00:05,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-04-01 11:00:05,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 33 [2023-04-01 11:00:05,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-04-01 11:00:05,595 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 [2023-04-01 11:00:05,943 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 67 treesize of output 47 [2023-04-01 11:00:05,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-04-01 11:00:06,038 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 11:00:06,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 65 treesize of output 53 [2023-04-01 11:00:06,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:00:06,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 11:00:06,457 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 101 treesize of output 81 [2023-04-01 11:00:06,466 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-04-01 11:00:06,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 1 [2023-04-01 11:00:06,470 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:00:06,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235817509] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 11:00:06,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [869768904] [2023-04-01 11:00:06,472 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-04-01 11:00:06,472 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 11:00:06,472 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 11:00:06,472 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 11:00:06,472 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 11:00:06,501 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 49 for LOIs [2023-04-01 11:00:07,036 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 11:00:07,040 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 11:00:07,715 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '661#(exists ((|v_main_#t~mem10_20| Int)) (and (< |v_main_#t~mem10_20| main_~min~0) (or (= (select (select |#memory_int| main_~i~0.base) (+ main_~i~0.offset 4)) |v_main_#t~mem10_20|) (= (select (select |#memory_int| main_~i~0.base) 4) |v_main_#t~mem10_20|))))' at error location [2023-04-01 11:00:07,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 11:00:07,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 11:00:07,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2023-04-01 11:00:07,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679911275] [2023-04-01 11:00:07,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 11:00:07,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-01 11:00:07,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:00:07,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-01 11:00:07,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=776, Unknown=0, NotChecked=0, Total=870 [2023-04-01 11:00:07,718 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:08,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:00:08,533 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2023-04-01 11:00:08,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 11:00:08,534 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-04-01 11:00:08,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:00:08,535 INFO L225 Difference]: With dead ends: 59 [2023-04-01 11:00:08,535 INFO L226 Difference]: Without dead ends: 57 [2023-04-01 11:00:08,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=237, Invalid=1403, Unknown=0, NotChecked=0, Total=1640 [2023-04-01 11:00:08,536 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 148 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 11:00:08,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 150 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 11:00:08,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-04-01 11:00:08,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 28. [2023-04-01 11:00:08,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:08,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2023-04-01 11:00:08,542 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 20 [2023-04-01 11:00:08,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:00:08,542 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2023-04-01 11:00:08,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:08,543 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2023-04-01 11:00:08,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-01 11:00:08,543 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:00:08,543 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:00:08,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 11:00:08,744 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,SelfDestructingSolverStorable5 [2023-04-01 11:00:08,744 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:00:08,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:00:08,745 INFO L85 PathProgramCache]: Analyzing trace with hash 61644491, now seen corresponding path program 1 times [2023-04-01 11:00:08,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:00:08,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920588424] [2023-04-01 11:00:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:00:08,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:00:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:00:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:00:09,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:00:09,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920588424] [2023-04-01 11:00:09,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920588424] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 11:00:09,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674865409] [2023-04-01 11:00:09,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:00:09,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:00:09,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:00:09,392 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) [2023-04-01 11:00:09,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 11:00:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:00:09,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 41 conjunts are in the unsatisfiable core [2023-04-01 11:00:09,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:00:09,527 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 6 treesize of output 5 [2023-04-01 11:00:09,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-04-01 11:00:09,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 11:00:09,572 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 14 treesize of output 16 [2023-04-01 11:00:09,583 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-04-01 11:00:09,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-04-01 11:00:09,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-04-01 11:00:09,611 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 [2023-04-01 11:00:09,776 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 27 treesize of output 15 [2023-04-01 11:00:09,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-04-01 11:00:09,829 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 0 case distinctions, treesize of input 22 treesize of output 10 [2023-04-01 11:00:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:00:09,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 11:00:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:00:10,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674865409] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 11:00:10,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2065996530] [2023-04-01 11:00:10,131 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-04-01 11:00:10,131 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 11:00:10,131 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 11:00:10,132 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 11:00:10,132 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 11:00:10,173 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 49 for LOIs [2023-04-01 11:00:10,619 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 11:00:10,622 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 11:00:11,210 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '955#(and (= main_~l~0.offset 0) (= (select |old(#valid)| 1) 1) (= (select |old(#length)| 1) 2) (= (select |old(#valid)| 0) 0) (not (= |#StackHeapBarrier| 0)) (= (select (select |old(#memory_int)| 1) 0) 48) (= |#NULL.offset| 0) (= (select |old(#length)| 2) 10) (= (select (select |old(#memory_int)| 1) 1) 0) (not (= 0 main_~l~0.base)) (not (= |#StackHeapBarrier| main_~l~0.base)) (= (select |old(#valid)| 2) 1) (= |#NULL.base| 0))' at error location [2023-04-01 11:00:11,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 11:00:11,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 11:00:11,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 21 [2023-04-01 11:00:11,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635488597] [2023-04-01 11:00:11,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 11:00:11,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-01 11:00:11,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:00:11,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-01 11:00:11,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2023-04-01 11:00:11,213 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:11,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:00:11,594 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2023-04-01 11:00:11,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 11:00:11,596 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-04-01 11:00:11,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:00:11,596 INFO L225 Difference]: With dead ends: 33 [2023-04-01 11:00:11,596 INFO L226 Difference]: Without dead ends: 31 [2023-04-01 11:00:11,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=206, Invalid=1054, Unknown=0, NotChecked=0, Total=1260 [2023-04-01 11:00:11,597 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 104 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 11:00:11,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 77 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 11:00:11,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-04-01 11:00:11,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2023-04-01 11:00:11,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:11,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2023-04-01 11:00:11,603 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 22 [2023-04-01 11:00:11,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:00:11,604 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2023-04-01 11:00:11,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:11,604 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2023-04-01 11:00:11,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-04-01 11:00:11,604 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:00:11,604 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:00:11,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 11:00:11,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:00:11,805 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:00:11,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:00:11,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1791081500, now seen corresponding path program 3 times [2023-04-01 11:00:11,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:00:11,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58814656] [2023-04-01 11:00:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:00:11,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:00:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:00:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:00:12,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:00:12,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58814656] [2023-04-01 11:00:12,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58814656] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 11:00:12,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591353420] [2023-04-01 11:00:12,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-01 11:00:12,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:00:12,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:00:12,182 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) [2023-04-01 11:00:12,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 11:00:12,309 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-01 11:00:12,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 11:00:12,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 52 conjunts are in the unsatisfiable core [2023-04-01 11:00:12,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:00:12,331 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 [2023-04-01 11:00:12,335 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 [2023-04-01 11:00:12,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-04-01 11:00:12,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-04-01 11:00:12,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 11:00:12,376 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 21 [2023-04-01 11:00:12,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 11:00:12,380 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 16 treesize of output 18 [2023-04-01 11:00:12,387 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-04-01 11:00:12,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-04-01 11:00:12,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-04-01 11:00:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:00:12,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 11:00:12,639 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 11:00:12,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2023-04-01 11:00:12,648 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 11:00:12,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2023-04-01 11:00:12,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 4 [2023-04-01 11:00:12,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 4 [2023-04-01 11:00:12,744 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 11:00:12,744 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2023-04-01 11:00:12,746 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 11:00:12,747 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 20 treesize of output 8 [2023-04-01 11:00:12,754 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 11:00:12,754 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-04-01 11:00:12,758 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 11:00:12,760 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 16 treesize of output 8 [2023-04-01 11:00:12,769 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:00:12,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591353420] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 11:00:12,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [65155077] [2023-04-01 11:00:12,770 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-04-01 11:00:12,771 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 11:00:12,771 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 11:00:12,771 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 11:00:12,771 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 11:00:12,796 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 49 for LOIs [2023-04-01 11:00:13,192 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 11:00:13,195 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 11:00:13,714 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1221#(exists ((|v_main_#t~mem10_34| Int)) (and (or (= (select (select |#memory_int| main_~i~0.base) (+ main_~i~0.offset 4)) |v_main_#t~mem10_34|) (= (select (select |#memory_int| main_~i~0.base) 4) |v_main_#t~mem10_34|)) (< |v_main_#t~mem10_34| main_~min~0)))' at error location [2023-04-01 11:00:13,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 11:00:13,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 11:00:13,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2023-04-01 11:00:13,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87519944] [2023-04-01 11:00:13,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 11:00:13,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 11:00:13,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:00:13,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 11:00:13,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2023-04-01 11:00:13,716 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:13,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:00:13,924 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2023-04-01 11:00:13,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 11:00:13,924 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-04-01 11:00:13,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:00:13,925 INFO L225 Difference]: With dead ends: 53 [2023-04-01 11:00:13,925 INFO L226 Difference]: Without dead ends: 32 [2023-04-01 11:00:13,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2023-04-01 11:00:13,926 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 11:00:13,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 146 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 11:00:13,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-04-01 11:00:13,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-04-01 11:00:13,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:13,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2023-04-01 11:00:13,931 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 25 [2023-04-01 11:00:13,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:00:13,931 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2023-04-01 11:00:13,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:00:13,931 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2023-04-01 11:00:13,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-04-01 11:00:13,932 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:00:13,932 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:00:13,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 11:00:14,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:00:14,133 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:00:14,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:00:14,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2007081070, now seen corresponding path program 4 times [2023-04-01 11:00:14,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:00:14,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729020987] [2023-04-01 11:00:14,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:00:14,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:00:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:00:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:00:15,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:00:15,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729020987] [2023-04-01 11:00:15,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729020987] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 11:00:15,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382177940] [2023-04-01 11:00:15,406 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-01 11:00:15,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:00:15,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:00:15,409 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) [2023-04-01 11:00:15,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 11:00:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:00:15,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 77 conjunts are in the unsatisfiable core [2023-04-01 11:00:15,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:00:15,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-04-01 11:00:15,596 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 6 treesize of output 5 [2023-04-01 11:00:15,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 11:00:15,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 33 [2023-04-01 11:00:15,695 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-04-01 11:00:15,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-04-01 11:00:15,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-04-01 11:00:15,737 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 [2023-04-01 11:00:15,863 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-04-01 11:00:15,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-04-01 11:00:15,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 51 [2023-04-01 11:00:15,887 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 69 treesize of output 65 [2023-04-01 11:00:15,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2023-04-01 11:00:15,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-04-01 11:00:15,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-01 11:00:17,577 INFO L321 Elim1Store]: treesize reduction 32, result has 88.9 percent of original size [2023-04-01 11:00:17,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 384 treesize of output 500 [2023-04-01 11:00:17,912 INFO L321 Elim1Store]: treesize reduction 32, result has 88.9 percent of original size [2023-04-01 11:00:17,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 236 treesize of output 456